JP4194797B2

JP4194797B2 - Elevator control system

Info

Publication number: JP4194797B2
Application number: JP2002111099A
Authority: JP
Inventors: 義郎浅井; 博光秋月
Original assignee: Toshiba Elevator Co Ltd
Current assignee: Toshiba Elevator and Building Systems Corp
Priority date: 2002-04-12
Filing date: 2002-04-12
Publication date: 2008-12-10
Anticipated expiration: 2022-04-12
Also published as: JP2003306279A

Description

【０００１】
【発明の属する技術分野】
本発明は、複数系統のコンバータおよびインバータから昇降用電力を巻上機の複数のモータ巻線に供給するエレベータ制御システムに関する。
【０００２】
【従来の技術】
近年、建物の高層化に伴い、乗客の大量輸送を行う超高速、超々高速エレベータや一度に２台分の乗客を輸送する上かご及び下かごを連結させたダブルデッキエレベータが利用されてきている。
【０００３】
このような大容量エレベータの駆動装置では、複数のコンバータ・インバータから巻上機のモータ巻線に電力を供給し、エレベータを駆動する構成となっている。このような構成をとる理由は、巻上機のモータの出力に見合った容量のコンバータ・インバータをそれぞれ１台でまかなう場合、当該コンバータ・インバータが非常に高価なものとなり、実現が難しい状況にある為である。
【０００４】
よって、巻上機のモータ巻線を複数に分割するとともに、各巻線に対応させて複数系統のコンバータ・インバータを設け、各系のコンバータ・インバータから対応する巻線に電力を供給することにより、大容量エレベータに適用できる巻上機を実現している。特に、巻上機のモータを円滑に駆動する場合、互いに同期或いは強調をとりつつ複数系のコンバータ・インバータから複数のモータ巻線に電力を供給する。
【０００５】
従って、以上のように複数の駆動系を用いてモータを駆動することにより、大きな出力を取り出すことが可能となるが、駆動系を構成する要素が増えるために故障に至る確立も高くなる。
【０００６】
そこで、一方の駆動系の構成要素が故障した場合、他方の駆動系を用いて複数の巻線に電力を供給し、低速度・低加速度でモータの出力性能を抑えつつエレベータの運行を継続させるエレベータ制御システムが考えられている。
【０００７】
図９は従来のかかるエレベータ制御システムを示す構成図である。
【０００８】
このエレベータ制御システムは、駆動系と制御系とに分けられ、そのうち駆動系は、電源５１と巻上機５２の各巻線Ｍ１、Ｍ２間にＡ駆動系及びＢ駆動系が並列に接続されている。ここで、Ａ駆動系は、系統接続手段５３ａ−コンバータ５４ａ−インバータ５５ａ−系統接続手段５６ａの直列回路からなり、Ｂ駆動系は、系統接続手段５３ｂ−コンバータ５４ｂ−インバータ５５ｂ−系統接続手段５６ｂの直列回路からなる。
【０００９】
この巻上機５２にはメインロープ５７が掛け渡され、そのメインロープ一方端側には乗りかご５８が吊下され、他方端側にはカウンターウエート５９が取り付けられ、巻上機５２の駆動によって乗りかご５８を昇降制御する。この乗りかご５８の底部とカウンターウエート５９の間にはコンペンシーブ６０に掛け渡されたコンペンロープ６１が接続されている。
【００１０】
さらに、制御系においては、コンバータ用制御部６２とインバータ用制御部６３が設けられ、コンバータ用制御部６２は、両コンバータ５４ａ，５４ｂを制御し、インバータ用制御部６３は、両インバータ５５ａ，５５ｂを制御する。これらコンバータ用制御部６２とインバータ用制御部６３とは互いに情報交換を行うための通信線６４が接続されている。
【００１１】
このような構成によれば、仮にＡ駆動系を構成する主回路（コンバータ５４ａ、インバータ５５ａの何れか、または両方）が故障した場合、接続手段５３ａ，５６ａをオフに設定しＡ駆動系から主回路を切り離す一方、接続手段５３ｂ，５６ｂをオンに設定し、Ｂ駆動系の主回路を巻上機５２のモータ巻線Ｍ２に接続し、１つの駆動系の主回路とモータ巻線Ｍ２のみで巻上機５２のモータを駆動する。
【００１２】
同様に、Ｂ駆動系の主回路（コンバータ５４ｂ、インバータ５５ｂの何れか、または両方）が故障した場合、接続手段５３ｂ，５６ｂをオフに設定しＢ駆動系から故障側の主回路を切り離す一方、接続手段５３ａ，５６ａをオンに設定し、Ａ駆動系の主回路を巻上機５２のモータ巻線Ｍ１とを接続し、１つの駆動系の主回路とモータ巻線Ｍ１のみで巻上機５２のモータを駆動する。
【００１３】
従って、以上のような制御システムでは、片側主回路の故障時にもう一方の主回路を用いて運転することができ、救出運転、運転したままの故障修理、定期点検時の片側インバータ点検等が可能となる。
【００１４】
【発明が解決しようとする課題】
しかし、以上のようなエレベータ制御システムは、異なる駆動系のコンバータ、インバータ、モータ巻線が同時に故障した場合、残りの構成要素の組合わせで救出運転することが不可能となる。例えばＡ駆動系のインバータ５５ａとＢ駆動系のコンバータ５４ｂとが故障した場合、巻上機５２の駆動が不可能となり、救出運転ができなくなる。
【００１５】
さらに、巻上機５２のモータ構造によっては、もう１つの問題点が出てくる。巻上機５２のモータ構造として、例えばロープ巻取り部分の左右に磁石付きロータ、ステータ巻線がそれぞれ配置されている構造の場合、駆動系から一方のステータ巻線に電力を供給すると、モータのスラスト方向に過大な力がかかってベアリングを破損する問題がある。さらに、２つの巻線が半径方向に配置されている場合でも、片側の巻線に電力を供給すると、巻上機５２のモータ軸にねじれ応力が発生して偏芯し破損するといった、いわゆる機械的な故障が生じ、救出運転が難しくなり、乗りかご内に乗客を閉じ込めてしまう問題がある。しかも、巻上機５２の機構が破損すると、復旧に時間がかかり、長時間にわたって運転が再開できない状態となり、特に超高層建物に据え付けた場合、多大な影響を与えることが考えられる。
【００１６】
本発明は上記事情に鑑みてなされたもので、両駆動系の構成要素が同時に故障した場合でも乗客を安全に救出可能とすることを目的とする。
【００１７】
また、本発明の他の目的は、所要とする構成要素を保守点検しながらエレベータの運転を継続することにある。
【００１８】
【課題を解決するための手段】
上記課題を解決するために、本発明に係るエレベータ制御システムは、電源に対し、第１のＡ系統接続手段、Ａ系統コンバータ及びＡ系統インバータが直列接続されるＡ駆動系と第１のＢ系統接続手段、Ｂ系統コンバータ及びＢ系統インバータが直列接続されるＢ駆動系とが並列的に接続され、前記Ａ系統及びＢ系統インバータの出力を、エレベータ昇降用巻上機を構成するＡ系統及びＢ系統のモータ巻線に供給するエレベータ制御システムにおいて、
各系統の故障要素となるコンバータ、インバータ、モータ巻線を切り離す可能に系統接続手段を設け、また異なる系統のコンバータ、インバータ、モータ巻線が同時に故障したときに正常側の駆動系から正常なモータ巻線に電力を供給するために各系統間に異系統接続手段を設け、故障要素に応じて、前記系統接続手段及び異系統接続手段を選択的にオフに設定して系統から切り離し、正常なコンバータ、インバータ、モータ巻線に接続される系統接続手段及び異系統接続手段を選択的にオンに設定し、モータ巻線に電力を供給する構成である。
【００１９】
これにより、何れかの系統コンバータの故障、異なる系統のコンバータとインバータとの同時故障、何れかの系統インバータの故障、異なる系統のインバータとモータ巻線との同時故障の何れかに対し、エレベータの運転を継続し、確実に乗客の閉じ込めをなくし、また各構成要素の点検時にエレベータを運転しながら点検作業を進めることが可能となる。
【００２０】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。
【００２１】
（第１の実施の形態：請求項１，２に対応）
図１は本発明に係わるエレベータ制御システムの一実施の形態を示す構成図である。
【００２２】
このシステムは、モータ駆動系と乗りかご昇降系と制御系とにより構成されている。
【００２３】
モータ駆動系は、従来と同様に電源１と巻上機２のモータ各巻線Ｍ１，Ｍ２との間にＡ駆動系およびＢ駆動系が並列に接続されている。ここで、Ａ駆動系は、電源１側から系統接続手段３ａ−コンバータ４ａ−インバータ５ａ−系統接続手段６ａの順序で接続され、当該系統接続手段６ａの他端側が巻線Ｍ１に接続されている。Ｂ駆動系は、同じく電源１側から系統接続手段３ｂ−コンバータ４ｂ−インバータ５ｂ−系統接続手段６ｂの順序で接続され、当該系統接続手段６ｂの他端側が巻線Ｍ２に接続されている。
【００２４】
乗りかご昇降系は、巻上機２が設けられ、当該巻上機２のロープ巻取り部分にはメインロープ１１が掛け渡され、そのメインロープ一方端側には乗りかご１２が吊下され、他方端側にはカウンターウエート１３が取り付けられている。さらに、乗りかご１２の底部とカウンターウエート１３との間にはコンペンシーブ１４に掛け渡されたコンペンロープ１５が接続されている。
【００２５】
前記制御系は、各Ａ・Ｂ系のコンバータ４ａ，４ｂを制御するコンバータ用制御部２１、各Ａ・Ｂ系のインバータ５ａ，５ｂを制御するインバータ用制御部２２、これら制御部２１，２２の間で情報交換を行うための通信線２３及び主回路を構成する各構成要素４ａ，４ｂ，５ａ，５ｂを制御したり、各構成要素４ａ，４ｂ，５ａ，５ｂの故障を含む各種の信号を制御部２１，２２に取込むための信号線２４の他、Ａ系統の系統接続手段６ａの両端部とＢ系統の系統接続手段６ｂの両端部とからそれぞれ交差するように設けられた異系統接続手段２４ａ、２４ｂ、駆動系を構成する各構成要素の故障時に対して各接続手段のオン・オフの組み合わせデータを保存する接続組合せテーブル２６、各制御部２１，２２から送られてくる故障情報に基づいて接続手段をオン・オフ制御する切替制御部２７が設けられている。
【００２６】
次に、以上のような制御システムの動作について説明する。
【００２７】
（イ）Ａ駆動系の主回路を巻上機２のモータ巻線Ｍ１，Ｍ２に短絡接続する場合（Ｂ駆動系の主回路の故障時）。
【００２８】
Ｂ駆動系の主回路の故障時、切替制御部２７は、接続手段３ｂ，６ｂ，２４ｂをオフに設定し、Ｂ駆動系からコンバータ４ｂ，インバータ５ｂを切り離す。つまり、巻上機２のモータ巻線Ｍ１，Ｍ２からコンバータ４ｂ，インバータ５ｂを切り離す。また、切替制御部２７は、系統接続手段３ａ，６ａ及び異系統接続手段２４ａをオンに設定すれば、インバータ５ａの出力を巻上機２の２つの巻線Ｍ１，Ｍ２に供給することができる。
【００２９】
（ロ）Ｂ駆動系の主回路を巻上機２のモータ巻線Ｍ１，Ｍ２に短絡接続する場合（Ａ駆動系の主回路の故障時）。
【００３０】
Ａ駆動系の主回路の故障時、切替制御部２７は、接続手段３ａ，６ａ，２４ａをオフに設定し、Ａ駆動系からコンバータ４ａ，インバータ５ａを切り離す。また、切替制御部２７は、系統接続手段３ｂ，６ｂ及び異系統接続手段２４ｂをオンに設定することにより、インバータ５ｂの出力を巻上機２の２つの巻線Ｍ１，Ｍ２に供給することが可能である。
【００３１】
従って、前記（イ）、（ロ）で述べたように、系統接続手段及び異系統接続手段をオン・オフ制御することにより、何れか一方の系統のインバータ故障時、他方の系統のインバータの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に分配して供給でき、モータ軸にねじれ応力が働いたり、偏芯させることがなく、巻上機２の機械的故障を未然に防止できる。よって、片側主回路の故障時、もう一方の主回路を用いて巻上機２を安全に運転することができ、運転したままの故障修理、定期点検時には片側コンバータ及び片側インバータの点検を実施でき、エレベータ停止時間を短縮できる。
【００３２】
（ハ）さらに、Ａ駆動系のインバータ５ａ及びＢ駆動系側のモータ巻線Ｍ２の故障時、切替制御部２７は、系統接続手段３ａ，６ａ，６ｂ及び異系統接続手段２４ａをオフに設定し、Ａ駆動系からインバータ５ａ及びＢ駆動系からモータ巻線Ｍ２を切り離す一方、系統接続手段３ｂ，異系統接続手段２４ｂをオンに設定すれば、正常側のインバータ５の出力を正常側のモータ巻線Ｍ１に供給できる。
【００３３】
また、Ｂ駆動系のインバータ５ｂ及びＡ駆動系側のモータ巻線Ｍ１の故障時、切替制御部２７は、予め接続組合せテーブル２６に保存される接続組合せデータに基づき、正常側のインバータ５ａの出力を正常側のモータ巻線Ｍ２に供給できる。
【００３４】
従って、以上のような実施の形態によれば、切替制御部２７は、１つの主回路の出力を巻上機２のモータ巻線Ｍ１又はＭ２に接続でき、片側主回路と巻上機２の片側巻線Ｍ１又はＭ２が故障した場合、インバータ５ａ又は５ｂの出力を巻上機２の何れかの巻線に供給でき、互いに異なる系統の構成要素が同時に故障しても、エレベータの運転を継続でき、乗客を安全に救出することが可能である。
【００３５】
図２は本発明に係わるエレベータ制御システムの他の例を示す構成図である。なお、同図において図１と同一部分には同一符号を付して図１の説明に譲り、以下、異なる部分について説明する。
【００３６】
この実施の形態は、図１の構成から系統接続手段６ａ，６ｂ及び異系統接続手段２４ａ，２４ｂを削除する一方、コンバータ４ａとインバータ５ａとの間及びコンバータ４ｂとインバータ５ｂとの間にそれぞれ個別に系統接続手段７ａ、系統接続手段７ｂが設けられている。さらに、系統接続手段７ａのインバータ側と系統接続手段７ｂのインバータ側との間に異系統接続手段２４ｃが設けられている。その他の構成は図１と同一であるので、ここでは省略する。
【００３７】
以下、この実施の形態におけるシステムの動作について説明する。
【００３８】
（イ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ、７ｂをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，２４ｃをオンに設定することにより、コンバータ４ａの出力を両インバータ５ａ，５ｂに供給することができる。
【００３９】
（ロ）コンバータ４ａの故障時、切替制御部２７は、接続手段３ａ、７ａをオフに設定することにより、Ａ駆動系からコンバータ４aを切り離す一方、接続手段３ｂ，７ｂ，２４ｃをオンに設定することにより、コンバータ４ｂの出力を両インバータ５ａ，５ｂに供給することができる。
【００４０】
従って、以上のような実施の形態によれば、何れか一方のコンバータ４ａ又は４ｂの故障に対し、もう一方のコンバータ４ｂ又は４ａを用いて、両インバータ５ａ，５ｂに所要とする電力を供給でき、運転を継続することができる。よって、エレベータを運転したままで故障修理の他、片側コンバータの点検を実行しつつ運転を継続できる。
【００４１】
次に、図３は図２と同様にコンバータ４ａ又は４ｂの故障に際し、図２と同様な作用効果を奏するための構成である。なお、同図において図１と同一部分には同一符号を付して図１の説明に譲り、以下、異なる部分について説明する。
【００４２】
この例は、図１の構成から接続手段６ａ，６ｂ及び２４ａ，２４ｂを削除する一方、Ａ駆動系のコンバータ４ａとインバータ５ａとの間、Ｂ駆動系のコンバータ４ｂとインバータ５ｂとの間に、系統接続手段７ａと８ａ、系統接続手段７ｂと８ｂがそれぞれ直列に介挿されている。
【００４３】
さらに、Ａ駆動系のコンバータ４ａ及びインバータ５ａの共通接続ラインとコンバータ４ｂ及びインバータ５ｂの共通接続ラインとの間に異系統接続手段２４ｃが設けられている。その他の構成は図１と同一であるので、ここでは省略する。
【００４４】
従って、以上のような実施の形態によれば、コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ、７ｂをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，８ａ，２４ｃ、８ｂをオンに設定することにより、コンバータ４ａの出力を両インバータ５ａ，５ｂに分配して供給することができる。
【００４５】
一方、コンバータ４ａの故障時、切替制御部２７は、接続手段３ａ、７ａをオフに設定し、Ａ駆動系からコンバータ４aを切り離す一方、接続手段３ｂ，７ｂ，８ｂ，２４ｃ，８ａをオンに設定することにより、コンバータ４ｂの出力を両インバータ５ａ，５ｂに分配して供給でき、前述同様にエレベータを運転したままで故障修理の他、片側コンバータの点検を実施しつつ、安全に運転を継続できる。
【００４６】
（第２の実施の形態：請求項３に対応）
図４は本発明に係わるエレベータ制御システムの他の実施の形態を示す構成図である。なお、同図において図１と同一部分には同一符号を付して図１の説明に譲り、以下、異なる部分について説明する。
【００４７】
この実施の形態は、図１の構成から接続手段６ａ，６ｂ及び２４ａ，２４ｂを削除する一方、図２と同様にコンバータ４ａとインバータ５ａの、コンバータ４ｂとインバータ５ｂとの間にそれぞれ個別に系統接続手段７ａ、系統接続手段７ｂが設けられている。さらに、これら系統接続手段７ａの両端部と系統接続手段７ｂの両端部との間に交差するように異系統接続手段２４ｄ、２４ｅが接続されている。その他の構成は図１と同一であるので、ここでは省略する。
【００４８】
次に、以上のようなシステムの動作について説明する。
【００４９】
（イ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ、７ｂ，２４ｅをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，２４ｄをオンに設定することにより、Ａ駆動系側コンバータ４ａの出力を両駆動系のインバータ５ａ，５ｂに接続できる。
【００５０】
（ロ）コンバータ４ａの故障時、切替制御部２７は、接続手段３ａ、７ａ，２４ｄをオフに設定し、Ａ駆動系からコンバータ４aを切り離す一方、接続手段３ｂ，７ｂ，２４ｅをオンに設定することにより、Ｂ駆動系側コンバータ４ｂの出力を両駆動系のインバータ５ａ，５ｂに接続できる。
【００５１】
（ハ）異なる系統のコンバータ４ｂ、インバータ５ａの同時故障時、切替制御部２７は、接続手段３ｂ，７ｂ，７ａ，２４ｅをオフに設定し、Ｂ駆動系からコンバータ４ｂ，Ａ駆動系からインバータ５ａを切り離す一方、接続手段３ａ，２４ｄをオンに設定することにより、Ａ駆動系側コンバータ４ａの出力をＢ駆動系側インバータ５ｂに接続できる。
【００５２】
（ニ）異なる系統のコンバータ４ａ及びインバータ５ｂの故障時、切替制御部２７は、接続手段３ａ，７ａ，７ｂ，２４ｄをオフに設定し、Ａ駆動系からコンバータ４ａ、Ｂ駆動系からインバータ５ｂを切り離す一方、接続手段３ｂ，２４ｅをオンに設定することにより、Ｂ駆動系のコンバータ４ｂの出力をＡ駆動系側インバータ５ａに供給できる。
【００５３】
従って、以上のような実施の形態によれば、複数の駆動系のうち何れかのコンバータ４ｂ又は４ａの故障時、故障コンバータを切り離すとともに、正常なコンバータ４ａ又は４ｂの出力を両駆動系のインバータ５ａ，５ｂに接続でき、何れかのコンバータの故障時であっても、運転したままの故障修理を実行でき、故障コンバータの保守点検を実行しながら運転を継続できる。しかも、モータ軸にねじれ応力が働いたり、偏芯させることがなく、巻上機２の機械的故障を未然に回避できる。
【００５４】
また、異なる駆動系のコンバータ及びインバータが同時に故障した場合でも、正常な異なる駆動系のコンバータ及びインバータを用いて、エレベータの運転を継続でき、乗客を閉じ込めることなく、乗客を安全に救出することができる。
【００５５】
（第３の実施の形態：請求項４に対応）
図５は本発明に係わるエレベータ制御システムの更に他の実施の形態を示す構成図である。なお、同図において図１、図３と同一部分には同一符号を付して図１、図３の説明に譲り、以下、異なる部分について説明する。
【００５６】
この実施の形態は、接続手段に関し、図１の構成と図３の構成とを組み合わせた構成である。その他の構成は図１及び図３と同様であるので、省略する。
【００５７】
次に、以上のようなシステムの動作について説明する。
【００５８】
（イ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ，５ｂをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，８ａ，２４ｃをオンに設定することにより、Ａ駆動系のコンバータ４ａの出力を両駆動系のインバータ５ａ，５ｂに接続できる。
【００５９】
このとき、接続手段６ａ，６ｂがオンし、２４ａ，２４ｂをオフに設定すれば、各インバータ５ａ，５ｂの出力を巻上機２の両巻線Ｍ１，Ｍ２に供給できる。
【００６０】
（ロ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ａ，７ａをオフに設定し、Ａ駆動系からコンバータ４ａを切り離す一方、接続手段３ｂ，７ｂ，８ｂ，２４ｃをオンに設定すれば、Ｂ駆動系のコンバータ４ｂの出力を両駆動系のインバータ５ａ，５ｂに接続できる。
【００６１】
このとき、接続手段６ａ，６ｂがオンし、２４ａ，２４ｂをオフに設定すれば、各インバータ５ａ，５ｂの出力を巻上機２の両巻線Ｍ１，Ｍ２に供給できる。
【００６２】
（ハ）コンバータ４ｂ及びインバータ５ａの同時故障時、切替制御部２７は、接続手段３ｂ，７ｂ，８ａをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離し、また接続手段３ａ，７ａ，２４ｃ，８ｂをオンに設定すれば、Ａ駆動系側コンバータ４ａの出力をＢ駆動系のインバータ５ｂに接続できる。
【００６３】
また、コンバータ４ａ及びインバータ５ｂの同時故障時、切替制御部２７は、接続手段３ａ，７ａ，８ｂをオフに設定し、Ａ駆動系からコンバータ４ａを切り離し、さらに接続手段３ｂ，７ｂ，２４ｃ，８ａをオンに設定することにより、Ｂ駆動系側コンバータ４ｂの出力をＡ駆動系インバータ５ａに接続できる。
【００６４】
（ニ）Ｂ駆動系のインバータ５ｂの故障時、Ａ駆動系のインバータ５ａを巻上機２のモータ巻線Ｍ１，Ｍ２に短絡接続する場合。
【００６５】
切替制御部２７は、接続手段６ｂ，２４ｂをオフすることにより、Ｂ駆動系のインバータ５ｂを巻上機２のモータ巻線Ｍ１，Ｍ２から切り離す。また、切替制御部２７が接続手段６ａ，２４ａをオンに設定することにより、インバー５ａの出力を巻上機２の２つの巻線Ｍ１，Ｍ２に供給できる。
【００６６】
また、インバータ５ａの故障時、Ｂ駆動系のインバータ５ｂの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に短絡接続する場合。
【００６７】
切替制御部２７は、接続手段６ａ，２４ａをオフすることにより、Ａ駆動系のインバータ５ａを巻上機２のモータ巻線Ｍ１，Ｍ２から切り離す。また、切替制御部２７は、接続手段６ｂ，２４ｂをオンすると、インバータ５ｂの出力を巻上機２の２つの巻線Ｍ１，Ｍ２に供給できる。
【００６８】
（ホ）インバータ５ｂの故障時、切替制御部２７は、接続手段６ａ，６ｂ，２４ｂをオフに設定し、巻上機２のモータ巻線Ｍ１からインバータ５ｂを切り離す一方、接続手段２４ａをオンに設定することにより、インバータ５ａの出力を巻上機２のモータ巻線Ｍ２に供給できる。
【００６９】
また、インバータ５ａの故障時、接続手段６ｂ，６ａ，２４ｂをオフに設定し、巻上機２のモータ巻線Ｍ２からインバータ５ａを切り離す一方、接続手段２４ｂをオンに設定すれば、インバータ５ｂの出力を巻上機２のモータ巻線Ｍ１に供給できる。
【００７０】
従って、以上のような実施の形態によれば、コンバータ４ａ，４ｂとインバータ５ａ，５ｂとの接続、インバータ５ａ，５ｂと巻上機２のモータ巻線Ｍ１，Ｍ２との接続を選択的にオン・オフすることにより、例えば片側コンバータと両側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２との接続、片側コンバータと片側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２との接続、片側コンバータと片側インバータと巻上機２のモータ片側巻線との接続により、エレベータを運転することが可能である。
【００７１】
よって、片側のコンバータ、片側のインバータ及び巻上機２の片側巻線が故障であっても、救出運転したまま故障修理でき、片側コンバータ、片側インバータを点検しながら定期点検を実施でき、構成要素の故障にも拘らず、エレベータの停止時間を短縮した運転を継続できる。
【００７２】
（第４の実施の形態：請求項５に対応）
図６は本発明に係わるエレベータ制御システムの更に他の実施の形態を示す構成図である。なお、同図において図１、図４と同一部分には同一符号を付して図１、図４の説明に譲り、以下、異なる部分について説明する。
【００７３】
この実施の形態は、接続手段に関し、図１の構成と図４の構成とを組み合わせた構成である。その他の構成は図１及び図４と同様であるので、ここでは省略する。
【００７４】
次に、以上のようなシステムの動作について説明する。
【００７５】
（イ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ，７ｂ，２４ｅをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，２４ｄをオンに設定することにより、Ａ駆動系コンバータ４ａの出力を両駆動系インバータ５ａ，５ｂに接続できる。
【００７６】
また、コンバータ４ａの故障時、切替制御部２７は、接続手段３ａ，７ａ，２４ｄをオフに設定し、Ａ駆動系からコンバータ４ａを切り離す一方、接続手段３ｂ，７ｂ，２４ｅをオンに設定することにより、Ｂ駆動系コンバータ４ｂの出力を両駆動系インバータ５ａ，５ｂに接続できる。
【００７７】
（ロ）コンバータ４ｂ及びインバータ５ａの同時故障時、切替制御部２７は、接続手段３ｂ，７ｂ，７ａ，２４ｅをオフに設定し、Ｂ駆動系からコンバータ４ｂ、Ａ駆動系からインバータ５ａを切り離す一方、接続手段３ａ，２４ｄをオンに設定することにより、コンバータ４ａの出力をインバータ５ｂに接続できる。
【００７８】
また、コンバータ４ａとインバータ５ｂの同時故障時、切替制御部２７は、接続手段３ａ，７ａ，２４ｄ，７ｂをオンに設定し、Ａ駆動系からコンバータ４ａ、Ｂ駆動系からインバータ５ｂを切り離し、接続手段３ｂ，２４ｅをオンに設定することにより、Ｂ駆動系のコンバータ４ｂの出力をＡ駆動系のインバータ５ａに接続できる。
【００７９】
（ハ）インバータ５ｂの故障時、切替制御部２７は、接続手段６ｂ，２４ｂをオフに設定し、インバータ５ｂを切り離す一方、接続手段６ａ，２４ａをオンに設定すれば、インバータ５ａの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に供給できる。
【００８０】
また、インバータ５ａの故障時、接続手段６ａ，２４ａをオフに設定しＡ駆動系からインバータ５ａを切り離す一方、接続手段６ｂ，２４ｂをオンに設定することにより、インバータ５ｂの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に供給できる。
【００８１】
さらに、インバータ５ａを巻上機２のモータ巻線Ｍ２だけに接続する場合、接続手段６ａ，６ｂ，２４ｂをオフし、接続手段２４ａをオンに設定することにより実現できる。
【００８２】
逆に、インバータ５ｂを巻上機２のモータ巻線Ｍ１だけに接続する場合、接続手段６ｂ，６ａ，２４ｂをオフに設定し、接続手段２４ｂをオンに設定することにより実現できる。
【００８３】
従って、以上のような実施の形態によれば、コンバータ４ａ，４ｂ、インバータ５ａ，５ｂ等の故障に際し、予め定める組み合わせに基づいて適宜接続手段をオン・オフ制御することにより、例えば片側コンバータと両側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ片側巻線の駆動系を作成でき、故障時に救出運転したままの故障修理、故障構成要素の保守・点検でき、構成要素の故障にも拘らず、エレベータの停止時間を短縮した運転を継続できる。
【００８４】
（第５の実施の形態：請求項６に対応）
図７は本発明に係わるエレベータ制御システムの更に他の実施の形態を示す構成図である。なお、同図において図１，図３と同一部分には同一符号を付して図１，図３の説明に譲り、以下、異なる部分について説明する。
【００８５】
この実施の形態は、接続手段７ａ，７ｂ，８ａ，８ｂ，２４ｃをもつ図３に示す構成に新たに、インバータ５ａと巻上機２のモータ巻線Ｍ１の間、インバータ５ｂと巻上機２のモータ巻線Ｍ２との間にそれぞれ系統接続手段６ａ，６ｂを設け、さらに当該接続手段６ａ，６ｂの巻線Ｍ１，Ｍ２側の間に異系統接続手段２４ｆが設けられている。その他は、図３と同様であるので、ここではそれらの説明を省略する。
【００８６】
次に、以上のようなシステムの動作について説明する。
【００８７】
（イ）Ｂ駆動系のコンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ，７ｂをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，８ａ，２４ｃ，８ｂをオンに設定することにより、Ａ駆動系コンバータ４ａの出力を両インバータ５ａ，５ｂに接続する。
【００８８】
また、Ａ駆動系のコンバータ４ａの故障時、切替制御部２７は、接続手段３ａ，７ａをオフに設定し、Ａ駆動系からコンバータ４ａを切り離す一方、接続手段３ｂ，７ｂ，８ｂ，２４ｃ，８ａをオンに設定し、Ｂ駆動系のコンバータ４ｂの出力を両インバータ５ａ，５ｂに接続する。
【００８９】
（ロ）コンバータ４ｂ及びインバータ５ａの同時故障時、切替制御部２７は、接続手段３ｂ，７ｂ，８ａをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，２４ｃ，８ｂをオンに設定し、Ａ駆動系のコンバータ４ａの出力をＢ駆動系のインバータ５ｂに接続する。
【００９０】
また、コンバータ４ａ及びインバータ５ｂの同時故障時、切替制御部２７は、同様に接続組み合わせテーブル２６の組み合わせデータに基づいて、Ｂ駆動系の正常なコンバータ４ｂの出力をＡ駆動系のインバータ５ａに接続する。
【００９１】
（ハ）インバータ５ａの故障時、切替制御部２７は、接続手段６ａをオフに設定し、Ａ駆動系からインバータ５ａを切り離す一方、接続手段６ｂ，２４ｆをオンに設定し、Ｂ駆動系のインバータ５ｂの出力を巻上機２のモータ両側巻線Ｍ１，Ｍ２に接続する。
【００９２】
逆に、インバータ５ｂの故障時、切替制御部２７は、同様に接続組み合わせテーブル２６の組み合わせデータに基づいて、Ａ駆動系のインバータ５ａの出力を巻上機２のモータ両側巻線Ｍ１，Ｍ２に接続する。
【００９３】
従って、以上のような実施の形態によれば、コンバータ４ａ，４ｂ、インバータ５ａ，５ｂ等の故障に際し、予め定める接続組み合わせデータに基づいて適宜接続手段をオン・オフ制御することにより、例えば片側コンバータと両側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ片側巻線等の駆動系を作成でき、故障時に救出運転したままの故障修理、故障構成要素の保守・点検でき、構成要素の故障にも拘らず、エレベータの停止時間を短縮した運転を継続できる。
【００９４】
（第６の実施の形態：請求項７に対応）
図８は本発明に係わるエレベータ制御システムの更に他の実施の形態を示す構成図である。なお、同図において図１，図４と同一部分には同一符号を付して図１，図４の説明に譲り、以下、異なる部分について説明する。
【００９５】
この実施の形態は、接続手段７ａ，７ｂ，２４ｄ，２４ｅをもつ図４に示す構成に新たに、インバータ５ａと巻上機２のモータ巻線Ｍ１の間、インバータ５ｂと巻上機２のモータ巻線Ｍ２との間にそれぞれ系統接続手段６ａ，６ｂを設け、さらに当該接続手段６ａ，６ｂの巻線Ｍ１，Ｍ２側の間に異系統接続手段２４ｆが設けられている。その他は、図４と同様であるので、ここではそれらの説明を省略する。
【００９６】
次に、以上のようなシステムの動作について説明する。
【００９７】
（イ）コンバータ４ｂの故障時、切替制御部２７は、接続手段３ｂ，７ｂ，２４ｅをオフに設定し、Ｂ駆動系からコンバータ４ｂを切り離す一方、接続手段３ａ，７ａ，２４ｄをオンに設定し、Ａ駆動系のコンバータ４ａの出力を両駆動系のインバータ５ａ，５ｂに接続する。
【００９８】
一方、コンバータ４ａの故障時、接続手段３ａ，７ａ，２４ｄをオフに設定し、Ａ駆動系からコンバータ４ｄを切り離す一方、接続手段３ｂ，７ｂ，２４ｅをオンに設定することにより、コンバータ４ｂの出力を両駆動系のインバータ５ａ，５ｂに接続する。
【００９９】
（ロ）コンバータ４ａ及びインバータ５ｂの同時故障時、切替制御部２７は、接続手段３ａ，７ａ，２４ｄ，７ｂをオフに設定し、Ａ駆動系コンバータ４ａ及びＢ駆動系インバータ５ｂを切り離し、かつ、接続手段３ｂ，２４ｅをオンに設定し、Ｂ駆動系のコンバータ４ｂの出力をＡ駆動系のインバータ５ａに接続する。
【０１００】
また、コンバータ４ｂ及びインバータ５ａの同時故障時、切替制御部２７は、同様に接続組み合わせテーブル２６の組み合わせデータに基づいて、Ａ駆動系のコンバータ４ａの出力をＢ駆動系のインバータ５ｂに接続する。
【０１０１】
（ハ）インバータ５ｂの故障時、切替制御部２７は、接続手段６ｂをオフに設定し、Ｂ駆動系からインバータ５ｂを切り離し、かつ、接続手段６ａ，２４ｆをオンに設定し、Ａ駆動系のインバータ５ａの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に供給することができる。
【０１０２】
一方、インバータ５ａの故障時、切替制御部２７は、接続手段６ａのオフ設定により、Ａ駆動系からインバータ５ａを切り離し、かつ、接続手段６ｂ，２４ｆをオンに設定することにより、Ｂ駆動系のインバータ５ｂの出力を巻上機２のモータ巻線Ｍ１，Ｍ２に供給することができる。
【０１０３】
従って、以上のような実施の形態によれば、コンバータ４ａ，４ｂ、インバータ５ａ，５ｂ等の故障に際し、予め定める接続組み合わせデータに基づいて適宜接続手段をオン・オフ制御することにより、例えば片側コンバータと両側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ両側巻線Ｍ１，Ｍ２、片側コンバータと片側インバータと巻上機２のモータ片側巻線等の駆動系を作成でき、故障時に救出運転したままの故障修理、故障構成要素の保守・点検でき、構成要素の故障にも拘らず、エレベータの停止時間を短縮した運転を継続できる。
【０１０４】
なお、上記実施の形態では、各駆動系の構成要素、巻上機２の巻線等の故障だけについて説明しているが、当然、各構成要素の点検を含むことは言うまでもない。
【０１０５】
なお、本願発明は、上記実施の形態に限定されるものでなく、その要旨を逸脱しない範囲で種々変形して実施できる。また、各実施の形態は可能な限り組み合わせて実施することが可能であり、その場合には組み合わせによる効果が得られる。さらに、上記各実施の形態には種々の上位，下位段階の発明が含まれており、開示された複数の構成要素の適宜な組み合わせにより種々の発明が抽出され得るものである。例えば問題点を解決するための手段に記載される全構成要件から幾つかの構成要件が省略されうることで発明が抽出された場合には、その抽出された発明を実施する場合には省略部分が周知慣用技術で適宜補われるものである。
【０１０６】
【発明の効果】
以上説明したように本発明によれば、両駆動系の構成要素が同時に故障した場合でも乗客を安全に救出できる。
【０１０７】
また、種々の構成要素の故障にも拘らず、所要とする構成要素を保守点検しながらエレベータの運転を継続できる。
【図面の簡単な説明】
【図１】本発明に係るエレベータ制御システムの一実施の形態を示す構成図。
【図２】本発明に係るエレベータ制御システムの他の実施の形態を示す要部構成図。
【図３】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図４】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図５】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図６】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図７】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図８】本発明に係るエレベータ制御システムの更に他の実施の形態を示す要部構成図。
【図９】従来のエレベータ制御システムを示す構成図。
【符号の説明】
１…電源
２…巻上機
Ｍ１，Ｍ２…モータ巻線
３ａ、３ｂ，６ａ，６ｂ，７ａ，７ｂ，８ａ，８ｂ…系統接続手段
４ａ，４ｂ…コンバータ
５ａ，５ｂ…インバータ
１１…メインロープ
１２…乗りかご
１３…カウンターウェート
１４…コンペンシーブ
１５…コンペンロープ
２１…コンバータ用制御部
２２…インバータ用制御部
２４ａ〜２４ｆ…異系統接続手段
２６…接続組合せテーブル
２７…切替制御部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator control system for supplying lifting power from a plurality of converters and inverters to a plurality of motor windings of a hoisting machine.
[0002]
[Prior art]
In recent years, with the rise of buildings, ultra-high speed and ultra-high speed elevators that transport passengers in large quantities and double deck elevators that connect upper and lower cars that transport two passengers at a time have been used. .
[0003]
Such a large-capacity elevator driving apparatus is configured to supply electric power to a motor winding of a hoisting machine from a plurality of converters / inverters to drive the elevator. The reason for adopting such a configuration is that when one converter / inverter with a capacity suitable for the output of the hoisting motor is used, the converter / inverter becomes very expensive and difficult to realize. Because of that.
[0004]
Therefore, by dividing the motor winding of the hoisting machine into a plurality of parts, providing a plurality of converters / inverters corresponding to each winding, and supplying power to the corresponding windings from the converters / inverters of each system, A hoisting machine applicable to large-capacity elevators has been realized. In particular, when the motor of the hoisting machine is driven smoothly, electric power is supplied to a plurality of motor windings from a plurality of converters / inverters while synchronizing or emphasizing each other.
[0005]
Therefore, it is possible to extract a large output by driving the motor using a plurality of drive systems as described above. However, since the number of elements constituting the drive system is increased, the probability of failure is increased.
[0006]
Therefore, if a component of one drive system fails, power is supplied to multiple windings using the other drive system, and the operation of the elevator is continued while suppressing the output performance of the motor at low speed and low acceleration. An elevator control system is considered.
[0007]
FIG. 9 is a block diagram showing such a conventional elevator control system.
[0008]
This elevator control system is divided into a drive system and a control system, and in the drive system, an A drive system and a B drive system are connected in parallel between the power source 51 and the windings M1 and M2 of the hoisting machine 52. . Here, the A drive system consists of a series circuit of system connection means 53a-converter 54a-inverter 55a-system connection means 56a, and the B drive system consists of system connection means 53b-converter 54b-inverter 55b-system connection means 56b. It consists of a series circuit.
[0009]
A main rope 57 is stretched over the hoisting machine 52, a car 58 is suspended from one end of the main rope, and a counterweight 59 is attached to the other end of the hoisting machine 52. The elevator car 58 is controlled to move up and down. Between the bottom of the car 58 and the counterweight 59, a compen- sion rope 61 spanned over a compensatory 60 is connected.
[0010]
Further, in the control system, a converter control unit 62 and an inverter control unit 63 are provided, the converter control unit 62 controls both converters 54a and 54b, and the inverter control unit 63 includes both inverters 55a and 55b. To control. The converter control unit 62 and the inverter control unit 63 are connected to a communication line 64 for exchanging information with each other.
[0011]
According to such a configuration, if the main circuit (one of the converter 54a and the inverter 55a or both) constituting the A drive system fails, the connection means 53a and 56a are set to OFF and the main drive system is switched from the A drive system. While disconnecting the circuit, the connection means 53b, 56b are set to ON, the main circuit of the B drive system is connected to the motor winding M2 of the hoisting machine 52, and only the main circuit of one drive system and the motor winding M2 are connected. The motor of the hoisting machine 52 is driven.
[0012]
Similarly, when the main circuit of the B drive system (either or both of the converter 54b and the inverter 55b) fails, the connection means 53b and 56b are set to OFF to disconnect the main circuit on the failure side from the B drive system, The connecting means 53a and 56a are set to ON, the main circuit of the A drive system is connected to the motor winding M1 of the hoisting machine 52, and the hoisting machine 52 is composed of only one main driving system circuit and the motor winding M1. Drive the motor.
[0013]
Therefore, in the control system as described above, when one side main circuit fails, it can be operated using the other main circuit, and rescue operation, fault repair while operating, one-side inverter inspection during periodic inspection, etc. are possible It becomes.
[0014]
[Problems to be solved by the invention]
However, in the elevator control system as described above, when converters, inverters, and motor windings of different drive systems fail at the same time, the rescue operation cannot be performed with a combination of the remaining components. For example, when the inverter 55a for the A drive system and the converter 54b for the B drive system fail, the hoisting machine 52 cannot be driven and the rescue operation cannot be performed.
[0015]
Furthermore, depending on the motor structure of the hoisting machine 52, another problem arises. As the motor structure of the hoisting machine 52, for example, in the case where the rotor with magnet and the stator winding are respectively arranged on the left and right of the rope winding portion, when electric power is supplied from the drive system to one stator winding, There is a problem that an excessive force is applied in the thrust direction and the bearing is damaged. Furthermore, even when two windings are arranged in the radial direction, when electric power is supplied to one winding, a so-called machine in which torsional stress is generated in the motor shaft of the hoisting machine 52 and is eccentric and damaged. Trouble occurs, rescue operation becomes difficult, and passengers are trapped in the car. In addition, when the mechanism of the hoisting machine 52 is damaged, it takes time to recover, and the operation cannot be resumed for a long time, and when installed in a super high-rise building, it may have a great influence.
[0016]
The present invention has been made in view of the above circumstances, and an object of the present invention is to enable passengers to be rescued safely even when components of both drive systems fail simultaneously.
[0017]
Another object of the present invention is to continue the operation of the elevator while maintaining and inspecting required components.
[0018]
[Means for Solving the Problems]
In order to solve the above-described problems, an elevator control system according to the present invention includes a first A system connection means, an A system converter, and an A system inverter connected in series to a power source. A drive A system and a first B system connection means, a B system converter and a B drive system in which a B system inverter are connected in series are connected in parallel, and the outputs of the A system and the B system inverter are connected to an elevator lifting hoist. In the elevator control system for supplying the motor windings of the A system and the B system constituting
System connection means is provided so that converters, inverters, and motor windings that are faulty elements in each system can be separated. When converters, inverters, and motor windings in different systems fail at the same time, a normal motor from the normal drive system In order to supply power to the windings, different system connection means are provided between the systems, and according to the failure factor, the system connection means and the different system connection means are selectively turned off and disconnected from the system. The system connection means connected to the converter, the inverter, the motor winding, and the different system connection means are selectively turned on to supply electric power to the motor winding.
[0019]
As a result, for any one of the system converter failures, simultaneous failures of converters and inverters of different systems, failures of any system inverter, simultaneous failures of inverters and motor windings of different systems, The operation can be continued, the passengers can be surely not trapped, and the inspection work can be carried out while operating the elevator during the inspection of each component.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(First embodiment: corresponding to claims 1 and 2)
FIG. 1 is a block diagram showing an embodiment of an elevator control system according to the present invention.
[0022]
This system is composed of a motor drive system, a car elevator system and a control system.
[0023]
In the motor drive system, the A drive system and the B drive system are connected in parallel between the power source 1 and the motor windings M1 and M2 of the hoisting machine 2 as in the conventional case. Here, the A drive system is connected from the power source 1 side in the order of system connection means 3a-converter 4a-inverter 5a-system connection means 6a, and the other end side of the system connection means 6a is connected to the winding M1. . The B drive system is also connected in the order of system connection means 3b-converter 4b-inverter 5b-system connection means 6b from the power source 1 side, and the other end side of the system connection means 6b is connected to the winding M2.
[0024]
The car lifting system is provided with a hoisting machine 2, a main rope 11 is hung on a rope winding portion of the hoisting machine 2, and a car 12 is suspended on one end side of the main rope, A counterweight 13 is attached to the other end side. Further, a compen- sion rope 15 spanned over a compensatory 14 is connected between the bottom of the car 12 and the counterweight 13.
[0025]
The control system includes a converter control unit 21 that controls the A / B system converters 4a and 4b, an inverter control unit 22 that controls the A / B system inverters 5a and 5b, and the control units 21 and 22. Various components 4a, 4b, 5a, 5b that control the communication line 23 and the main circuit for exchanging information between them, and various signals including failures of the respective components 4a, 4b, 5a, 5b Different system connections provided so as to intersect from both ends of the system connection means 6a of the A system and both ends of the system connection means 6b of the B system in addition to the signal line 24 for taking in the control units 21 and 22 Means 24a, 24b, connection combination table 26 for storing on / off combination data of each connection means for failure of each component constituting the drive system, failure information sent from each control unit 21, 22 Switching control unit 27 for on-off controlling the connection means Zui is provided.
[0026]
Next, the operation of the above control system will be described.
[0027]
(A) When the main circuit of the A drive system is short-circuited to the motor windings M1 and M2 of the hoisting machine 2 (when the main circuit of the B drive system fails).
[0028]
When the main circuit of the B drive system fails, the switching control unit 27 turns off the connection means 3b, 6b, and 24b, and disconnects the converter 4b and the inverter 5b from the B drive system. That is, the converter 4b and the inverter 5b are disconnected from the motor windings M1 and M2 of the hoisting machine 2. Further, the switching control unit 27 can supply the output of the inverter 5a to the two windings M1 and M2 of the hoisting machine 2 if the system connection means 3a and 6a and the different system connection means 24a are set to ON. .
[0029]
(B) When the main circuit of the B drive system is short-circuited to the motor windings M1, M2 of the hoisting machine 2 (when the main circuit of the A drive system fails).
[0030]
When the main circuit of the A drive system fails, the switching control unit 27 turns off the connection means 3a, 6a, and 24a, and disconnects the converter 4a and the inverter 5a from the A drive system. Further, the switching control unit 27 supplies the output of the inverter 5b to the two windings M1 and M2 of the hoisting machine 2 by turning on the system connection means 3b and 6b and the different system connection means 24b. Is possible.
[0031]
Therefore, as described in (a) and (b) above, by controlling on / off of the system connection means and the different system connection means, the output of the inverter of the other system when one of the system inverters fails Can be distributed and supplied to the motor windings M1 and M2 of the hoisting machine 2, and the motor shaft can be prevented from being twisted or decentered, and mechanical failure of the hoisting machine 2 can be prevented. Therefore, when one side main circuit fails, the hoisting machine 2 can be safely operated using the other main circuit, and the one-side converter and one-side inverter can be inspected at the time of failure repair and periodic inspection while operating. The elevator stop time can be shortened.
[0032]
(C) Further, at the time of failure of the A drive system inverter 5a and the B drive system side motor winding M2, the switching control unit 27 turns off the system connection means 3a, 6a, 6b and the different system connection means 24a. If the motor winding M2 is disconnected from the A drive system and the motor drive M2 from the B drive system while the system connection means 3b and the different system connection means 24b are set to ON, the output of the normal inverter 5 is connected to the normal motor winding. Can be supplied to the line M1.
[0033]
When the B drive system inverter 5b and the A drive system side motor winding M1 fail, the switching control unit 27 outputs the output of the normal side inverter 5a based on the connection combination data stored in the connection combination table 26 in advance. Can be supplied to the motor winding M2 on the normal side.
[0034]
Therefore, according to the above embodiment, the switching control unit 27 can connect the output of one main circuit to the motor winding M1 or M2 of the hoisting machine 2, and the one-side main circuit and the hoisting machine 2 can be connected. When one side winding M1 or M2 fails, the output of inverter 5a or 5b can be supplied to any winding of hoisting machine 2, and even if components of different systems fail simultaneously, operation of the elevator continues It is possible to rescue passengers safely.
[0035]
FIG. 2 shows another elevator control system according to the present invention. Example FIG. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of FIG.
[0036]
In this embodiment, the system connection means 6a, 6b and the different system connection means 24a, 24b are deleted from the configuration shown in FIG. 1, while the converter 4a and the inverter 5a and the converter 4b and the inverter 5b are individually provided. Are provided with system connection means 7a and system connection means 7b. Further, different system connection means 24c is provided between the inverter side of the system connection means 7a and the inverter side of the system connection means 7b. Other configurations are the same as those in FIG.
[0037]
The operation of the system in this embodiment will be described below.
[0038]
(A) When the converter 4b fails, the switching control unit 27 sets the connection means 3b and 7b to OFF and disconnects the converter 4b from the B drive system, while setting the connection means 3a, 7a and 24c to ON. The output of the converter 4a can be supplied to both inverters 5a and 5b.
[0039]
(B) At the time of failure of the converter 4a, the switching control unit 27 sets the connection means 3a, 7a to off, thereby disconnecting the converter 4a from the A drive system and setting the connection means 3b, 7b, 24c to on. Thus, the output of the converter 4b can be supplied to both the inverters 5a and 5b.
[0040]
Therefore, according to the embodiment as described above, the required power can be supplied to both inverters 5a and 5b by using the other converter 4b or 4a in response to the failure of one of the converters 4a or 4b. , You can continue driving. Therefore, it is possible to continue the operation while executing the inspection of the one-side converter in addition to repairing the failure while the elevator is in operation.
[0041]
Next, FIG. 3 shows a configuration for producing the same operational effects as those in FIG. 2 when the converter 4a or 4b fails, as in FIG. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of FIG.
[0042]
In this example, the connection means 6a, 6b and 24a, 24b are deleted from the configuration of FIG. 1, while between the A drive system converter 4a and the inverter 5a, between the B drive system converter 4b and the inverter 5b, System connection means 7a and 8a and system connection means 7b and 8b are respectively inserted in series.
[0043]
Further, a different system connection means 24c is provided between the common connection line of the A drive system converter 4a and the inverter 5a and the common connection line of the converter 4b and the inverter 5b. Other configurations are the same as those in FIG.
[0044]
Therefore, according to the embodiment as described above, when the converter 4b fails, the switching control unit 27 sets the connection means 3b and 7b to off and disconnects the converter 4b from the B drive system, while the connection means 3a, By setting 7a, 8a, 24c, and 8b to ON, the output of the converter 4a can be distributed and supplied to both inverters 5a and 5b.
[0045]
On the other hand, when the converter 4a fails, the switching control unit 27 sets the connection means 3a and 7a to off, disconnects the converter 4a from the A drive system, and sets the connection means 3b, 7b, 8b, 24c and 8a to on. By doing so, the output of the converter 4b can be distributed and supplied to both the inverters 5a and 5b, and the operation can be safely continued while performing the repair of the one-side converter as well as repairing the failure while the elevator is operating as described above. .
[0046]
( Second Embodiment: Claims To 3 Correspondence)
FIG. 4 shows an elevator control system according to the present invention. Other It is a block diagram which shows embodiment. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of FIG.
[0047]
In this embodiment, the connection means 6a, 6b and 24a, 24b are deleted from the configuration of FIG. 1, while the converter 4a and the inverter 5a are individually connected between the converter 4b and the inverter 5b as in FIG. Connection means 7a and system connection means 7b are provided. Further, different system connection means 24d and 24e are connected so as to intersect between both ends of the system connection means 7a and both ends of the system connection means 7b. Other configurations are the same as those in FIG.
[0048]
Next, the operation of the system as described above will be described.
[0049]
(A) When the converter 4b fails, the switching control unit 27 turns off the connection means 3b, 7b, 24e, disconnects the converter 4b from the B drive system, and turns on the connection means 3a, 7a, 24d. Thus, the output of the A drive system side converter 4a can be connected to the inverters 5a and 5b of both drive systems.
[0050]
(B) When the converter 4a fails, the switching control unit 27 turns off the connection means 3a, 7a, 24d, disconnects the converter 4a from the A drive system, and turns on the connection means 3b, 7b, 24e. Thus, the output of the B drive system side converter 4b can be connected to the inverters 5a and 5b of both drive systems.
[0051]
(C) At the time of simultaneous failure of the converter 4b and the inverter 5a in different systems, the switching control unit 27 sets the connection means 3b, 7b, 7a, 24e to OFF, the converter 4b from the B drive system, and the inverter 5a from the A drive system On the other hand, the output of the A drive system side converter 4a can be connected to the B drive system side inverter 5b by turning on the connecting means 3a and 24d.
[0052]
(D) When the converter 4a and the inverter 5b of different systems fail, the switching control unit 27 turns off the connecting means 3a, 7a, 7b, 24d, and turns the converter 4a from the A drive system and the inverter 5b from the B drive system. On the other hand, by setting the connection means 3b and 24e to ON, the output of the B drive system converter 4b can be supplied to the A drive system side inverter 5a.
[0053]
Therefore, according to the embodiment as described above, when any of the converters 4b or 4a among the plurality of drive systems fails, the failed converter is disconnected and the output of the normal converter 4a or 4b is converted to the inverters of both drive systems. 5a and 5b can be connected, and even when one of the converters is faulty, it is possible to carry out fault repair while operating, and to continue the operation while performing maintenance and inspection of the faulty converter. In addition, a mechanical failure of the hoisting machine 2 can be avoided without any torsional stress acting on the motor shaft or eccentricity.
[0054]
In addition, even when converters and inverters of different drive systems fail at the same time, it is possible to continue operation of the elevator using normal converters and inverters of different drive systems, and to rescue passengers safely without trapping passengers. it can.
[0055]
( Third Embodiment: Claims 4 Correspondence)
FIG. 5 is a block diagram showing still another embodiment of the elevator control system according to the present invention. In the figure, the same parts as those in FIGS. 1 and 3 are denoted by the same reference numerals, and the description will be given with reference to FIGS. 1 and 3. Hereinafter, different parts will be described.
[0056]
This embodiment relates to the connecting means and is a combination of the configuration of FIG. 1 and the configuration of FIG. Other configurations are the same as those in FIG. 1 and FIG.
[0057]
Next, the operation of the system as described above will be described.
[0058]
(A) When the converter 4b fails, the switching control unit 27 turns off the connection means 3b and 5b, disconnects the converter 4b from the B drive system, and turns on the connection means 3a, 7a, 8a, and 24c. Thus, the output of the A drive system converter 4a can be connected to the inverters 5a and 5b of both drive systems.
[0059]
At this time, if the connecting means 6a and 6b are turned on and the switches 24a and 24b are turned off, the outputs of the inverters 5a and 5b can be supplied to both windings M1 and M2 of the hoisting machine 2.
[0060]
(B) When the converter 4b fails, the switching control unit 27 turns off the connection means 3a and 7a, disconnects the converter 4a from the A drive system, and turns on the connection means 3b, 7b, 8b, and 24c. For example, the output of the B drive system converter 4b can be connected to the inverters 5a and 5b of both drive systems.
[0061]
At this time, if the connecting means 6a and 6b are turned on and the switches 24a and 24b are turned off, the outputs of the inverters 5a and 5b can be supplied to both windings M1 and M2 of the hoisting machine 2.
[0062]
(C) At the time of simultaneous failure of the converter 4b and the inverter 5a, the switching control unit 27 turns off the connecting means 3b, 7b, 8a, disconnects the converter 4b from the B drive system, and connects the connecting means 3a, 7a, 24c, If 8b is set to ON, the output of the A drive system side converter 4a can be connected to the B drive system inverter 5b.
[0063]
When the converter 4a and the inverter 5b simultaneously fail, the switching control unit 27 sets the connection means 3a, 7a, 8b to off, disconnects the converter 4a from the A drive system, and further connects the connection means 3b, 7b, 24c, 8a. Is set to ON, the output of the B drive system side converter 4b can be connected to the A drive system inverter 5a.
[0064]
(D) When the A drive inverter 5a is short-circuited to the motor windings M1 and M2 of the hoisting machine 2 when the B drive inverter 5b fails.
[0065]
The switching control unit 27 disconnects the B drive system inverter 5b from the motor windings M1 and M2 of the hoisting machine 2 by turning off the connecting means 6b and 24b. In addition, the switching control unit 27 sets the connection means 6 a and 24 a to ON so that the output of the invar 5 a can be supplied to the two windings M 1 and M 2 of the hoisting machine 2.
[0066]
Further, when the inverter 5a fails, the output of the B drive system inverter 5b is short-circuited to the motor windings M1, M2 of the hoisting machine 2.
[0067]
The switching control unit 27 disconnects the A drive system inverter 5a from the motor windings M1 and M2 of the hoisting machine 2 by turning off the connecting means 6a and 24a. Further, the switching control unit 27 can supply the output of the inverter 5b to the two windings M1 and M2 of the hoisting machine 2 when the connecting means 6b and 24b are turned on.
[0068]
(E) At the time of failure of the inverter 5b, the switching control unit 27 sets the connection means 6a, 6b, 24b to off, disconnects the inverter 5b from the motor winding M1 of the hoisting machine 2, and turns on the connection means 24a. By setting, the output of the inverter 5a can be supplied to the motor winding M2 of the hoisting machine 2.
[0069]
Further, when the inverter 5a fails, the connection means 6b, 6a, 24b is set to OFF, and the inverter 5a is disconnected from the motor winding M2 of the hoisting machine 2, while the connection means 24b is set to ON, the inverter 5b The output can be supplied to the motor winding M1 of the hoisting machine 2.
[0070]
Therefore, according to the embodiment as described above, the connection between the converters 4a and 4b and the inverters 5a and 5b and the connection between the inverters 5a and 5b and the motor windings M1 and M2 of the hoisting machine 2 are selectively turned on. By turning off, for example, connection between the single-side converter, the double-sided inverter and the motor both-side windings M1, M2 of the hoisting machine 2, and the connection between the single-side converter, the single-sided inverter and the motor-side windings M1, M2 of the hoisting machine 2 The elevator can be operated by connecting the one-side converter, the one-side inverter, and the motor one-side winding of the hoisting machine 2.
[0071]
Therefore, even if one-side converter, one-side inverter and one-side winding of hoisting machine 2 are faulty, they can be repaired while being rescued, and regular inspection can be performed while checking one-side converter and one-side inverter. Despite this failure, it is possible to continue operation with a reduced elevator stop time.
[0072]
( 4th Embodiment: Claims Corresponding to 5 )
FIG. 6 is a block diagram showing still another embodiment of the elevator control system according to the present invention. In the figure, the same parts as those in FIGS. 1 and 4 are denoted by the same reference numerals, and the description will be given with reference to FIGS. 1 and 4. Hereinafter, different parts will be described.
[0073]
This embodiment relates to the connecting means and is a combination of the configuration of FIG. 1 and the configuration of FIG. Other configurations are the same as those shown in FIGS. 1 and 4 and are omitted here.
[0074]
Next, the operation of the system as described above will be described.
[0075]
(B) Converter 4b At the time of failure, the switching control unit 27 switches the connection means 3b, 7b, 24e. off And disconnecting the converter 4b from the B drive system while turning on the connection means 3a, 7a, 24d, the output of the A drive system converter 4a can be connected to both drive system inverters 5a, 5b.
[0076]
Also converter 4a At the time of failure, the switching control unit 27 sets the connection means 3a, 7a, 24d to OFF, disconnects the converter 4a from the A drive system, and sets the connection means 3b, 7b, 24e to ON, thereby driving B. The output of system converter 4b can be connected to both drive system inverters 5a and 5b.
[0077]
(B) At the time of simultaneous failure of the converter 4b and the inverter 5a, the switching control unit 27 sets the connection means 3b, 7b, 7a, 24e to off, and disconnects the converter 4b from the B drive system and the inverter 5a from the A drive system. By setting the connecting means 3a and 24d to ON, the output of the converter 4a can be connected to the inverter 5b.
[0078]
When the converter 4a and the inverter 5b simultaneously fail, the switching control unit 27 turns on the connection means 3a, 7a, 24d, 7b, disconnects the converter 4a from the A drive system, and disconnects the inverter 5b from the B drive system. By setting the means 3b and 24e to ON, the output of the B drive system converter 4b can be connected to the A drive system inverter 5a.
[0079]
(C) When the inverter 5b fails, the switching control unit 27 turns off the connection means 6b and 24b and disconnects the inverter 5b, while setting the connection means 6a and 24a to on turns the output of the inverter 5a. The motor windings M1 and M2 of the upper machine 2 can be supplied.
[0080]
Further, when the inverter 5a fails, the connecting means 6a, 24a is set to off and the inverter 5a is disconnected from the A drive system, while the connecting means 6b, 24b is set to on so that the output of the inverter 5b is increased. Can be supplied to the motor windings M1 and M2.
[0081]
Further, when the inverter 5a is connected only to the motor winding M2 of the hoisting machine 2, it can be realized by turning off the connecting means 6a, 6b, 24b and turning on the connecting means 24a.
[0082]
On the contrary, when the inverter 5b is connected only to the motor winding M1 of the hoisting machine 2, it can be realized by setting the connection means 6b, 6a, 24b to OFF and setting the connection means 24b to ON.
[0083]
Therefore, according to the embodiment as described above, when the converters 4a and 4b, the inverters 5a and 5b, etc. fail, the connection means is appropriately turned on / off based on a predetermined combination, for example, one side converter and both sides Motor side windings M1 and M2 of the inverter and hoisting machine 2, motor side windings M1 and M2 of the single side converter and single side inverter and hoisting machine 2, motor side windings M1 and M2 of the single side converter, side inverter and hoisting machine 2 It is possible to create a drive system, to repair the failure while maintaining the rescue operation in the event of a failure, to maintain and inspect the failed component, and to continue the operation with reduced elevator stoppage time despite the failure of the component.
[0084]
( 5th (Embodiment: corresponding to claim 6)
FIG. 7 is a block diagram showing still another embodiment of the elevator control system according to the present invention. In this figure, the same parts as those in FIGS. 1 and 3 are denoted by the same reference numerals, and the description will be given with reference to FIGS. 1 and 3. Hereinafter, different parts will be described.
[0085]
This embodiment is newly added to the configuration shown in FIG. 3 having connection means 7a, 7b, 8a, 8b, and 24c, between the inverter 5a and the motor winding M1 of the hoisting machine 2, and between the inverter 5b and the hoisting machine 2. The system connection means 6a and 6b are respectively provided between the motor winding M2 and the system connection means 24f is provided between the windings M1 and M2 of the connection means 6a and 6b. Others are the same as those in FIG. 3, so the description thereof is omitted here.
[0086]
Next, the operation of the system as described above will be described.
[0087]
(A) When the converter 4b in the B drive system fails, the switching control unit 27 turns off the connection means 3b and 7b and disconnects the converter 4b from the B drive system, while the connection means 3a, 7a, 8a, 24c, By setting 8b to ON, the output of the A drive system converter 4a is connected to both inverters 5a and 5b.
[0088]
When the A drive system converter 4a fails, the switching control unit 27 turns off the connection means 3a and 7a and disconnects the converter 4a from the A drive system, while the connection means 3b, 7b, 8b, 24c and 8a. Is turned on, and the output of the B drive system converter 4b is connected to both inverters 5a and 5b.
[0089]
(B) At the time of simultaneous failure of the converter 4b and the inverter 5a, the switching control unit 27 sets the connection means 3b, 7b, 8a to off and disconnects the converter 4b from the B drive system, while the connection means 3a, 7a, 24c, 8b is set to ON, and the output of the A drive system converter 4a is connected to the B drive system inverter 5b.
[0090]
When the converter 4a and the inverter 5b simultaneously fail, the switching control unit 27 similarly connects the output of the normal B drive system converter 4b to the A drive system inverter 5a based on the combination data in the connection combination table 26. To do.
[0091]
(C) At the time of failure of the inverter 5a, the switching control unit 27 sets the connection means 6a to be off and disconnects the inverter 5a from the A drive system, while setting the connection means 6b and 24f to be on and the B drive system inverter. The output of 5b is connected to the motor side windings M1, M2 of the hoisting machine 2.
[0092]
Conversely, when the inverter 5b fails, the switching control unit 27 similarly outputs the output of the A drive inverter 5a to the motor both-side windings M1 and M2 of the hoisting machine 2 based on the combination data in the connection combination table 26. Connecting.
[0093]
Therefore, according to the embodiment as described above, when the converters 4a, 4b, the inverters 5a, 5b, etc. fail, the connection means is appropriately turned on / off based on predetermined connection combination data, for example, one-side converter Motor both-side windings M1 and M2 of both-side inverter and hoisting machine 2, single-side converter and one-side inverter and motor both-side windings M1 and M2 of hoisting machine 2, one-side converter and one-side inverter and motor one-side winding of hoisting machine 2 It is possible to create a drive system such as a line, to repair a failure while maintaining a rescue operation in the event of a failure, to maintain and inspect a failed component, and to continue operation with reduced elevator stoppage time despite component failure.
[0094]
(Sixth embodiment: corresponding to claim 7)
FIG. 8 is a block diagram showing still another embodiment of the elevator control system according to the present invention. In the figure, the same parts as those in FIGS. 1 and 4 are denoted by the same reference numerals, and the description will be given with reference to FIGS.
[0095]
This embodiment is newly added to the configuration shown in FIG. 4 having connecting means 7a, 7b, 24d, and 24e, between the inverter 5a and the motor winding M1 of the hoisting machine 2, and between the inverter 5b and the motor of the hoisting machine 2. System connection means 6a and 6b are respectively provided between the windings M2, and different system connection means 24f are provided between the windings M1 and M2 of the connection means 6a and 6b. The other parts are the same as those in FIG. 4, and the description thereof is omitted here.
[0096]
Next, the operation of the system as described above will be described.
[0097]
(A) When the converter 4b fails, the switching control unit 27 turns off the connection means 3b, 7b, 24e, disconnects the converter 4b from the B drive system, and turns on the connection means 3a, 7a, 24d. The output of the A drive system converter 4a is connected to the inverters 5a and 5b of both drive systems.
[0098]
On the other hand, when the converter 4a fails, the connection means 3a, 7a, 24d is set to OFF, and the converter 4d is disconnected from the A drive system, while the connection means 3b, 7b, 24e is set to ON to thereby output the converter 4b. Are connected to the inverters 5a and 5b of both drive systems.
[0099]
(B) At the time of simultaneous failure of the converter 4a and the inverter 5b, the switching control unit 27 turns off the connection means 3a, 7a, 24d, 7b, disconnects the A drive system converter 4a and the B drive system inverter 5b, and The connecting means 3b and 24e are set to ON, and the output of the B drive system converter 4b is connected to the A drive system inverter 5a.
[0100]
When the converter 4b and the inverter 5a simultaneously fail, the switching control unit 27 similarly connects the output of the A drive system converter 4a to the B drive system inverter 5b based on the combination data of the connection combination table 26.
[0101]
(C) When the inverter 5b fails, the switching control unit 27 sets the connection means 6b to OFF, disconnects the inverter 5b from the B drive system, sets the connection means 6a and 24f to ON, and The output of the inverter 5a can be supplied to the motor windings M1, M2 of the hoisting machine 2.
[0102]
On the other hand, when the inverter 5a fails, the switching control unit 27 disconnects the inverter 5a from the A drive system and sets the connection means 6b and 24f to on by turning off the connection means 6a. The output of the inverter 5b can be supplied to the motor windings M1 and M2 of the hoisting machine 2.
[0103]
Therefore, according to the embodiment as described above, when the converters 4a, 4b, the inverters 5a, 5b, etc. fail, the connection means is appropriately turned on / off based on predetermined connection combination data, for example, one-side converter Motor both-side windings M1 and M2 of both-side inverter and hoisting machine 2, single-side converter and one-side inverter and motor both-side windings M1 and M2 of hoisting machine 2, one-side converter and one-side inverter and motor one-side winding of hoisting machine 2 It is possible to create a drive system such as a line, to repair a failure while maintaining a rescue operation in the event of a failure, to maintain and inspect a failed component, and to continue operation with reduced elevator stoppage time despite component failure.
[0104]
In the above embodiment, only the failure of the components of each drive system and the winding of the hoisting machine 2 is described, but it goes without saying that the inspection of each component is naturally included.
[0105]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. In addition, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Further, each of the above embodiments includes various higher-level and lower-level inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, the omitted part is used when the extracted invention is implemented. Is appropriately supplemented by well-known conventional techniques.
[0106]
【The invention's effect】
As described above, according to the present invention, passengers can be rescued safely even if the components of both drive systems fail simultaneously.
[0107]
Moreover, despite the failure of various components, the operation of the elevator can be continued while maintaining and inspecting the required components.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of an elevator control system according to the present invention.
FIG. 2 is a main part configuration diagram showing another embodiment of an elevator control system according to the present invention.
FIG. 3 is a main part configuration diagram showing still another embodiment of an elevator control system according to the present invention.
FIG. 4 is a main part configuration diagram showing still another embodiment of an elevator control system according to the present invention.
FIG. 5 is a main part configuration diagram showing still another embodiment of an elevator control system according to the present invention.
FIG. 6 is a main part configuration diagram showing still another embodiment of the elevator control system according to the present invention.
FIG. 7 is a main part configuration diagram showing still another embodiment of an elevator control system according to the present invention.
FIG. 8 is a main part configuration diagram showing still another embodiment of the elevator control system according to the present invention.
FIG. 9 is a configuration diagram showing a conventional elevator control system.
[Explanation of symbols]
1 ... Power supply
2 ... Hoisting machine
M1, M2 ... Motor winding
3a, 3b, 6a, 6b, 7a, 7b, 8a, 8b ... system connection means
4a, 4b ... Converter
5a, 5b ... Inverter
11 ... Main rope
12 ... Ride car
13 ... Counterweight
14 ... Compensation
15 ... Compen rope
21 ... Control unit for converter
22 ... Control unit for inverter
24a-24f ... Different system connection means
26 ... Connection combination table
27. Switching control unit

Claims

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
Second A system connection means and second B system connection means provided on the output side of each system inverter;
First and second different system connection means provided so as to intersect between both ends of the second A system connection means and both ends of the second B system connection means;
When any system converter or system inverter fails, the system connection means and the different system connection means connected to the converter and inverter of the faulty system are set to OFF and connected to the converter and inverter of the normal system Switching control means for setting the system connection means and the different system connection means to be turned on,
An elevator control system characterized in that the outputs of the converter and inverter on the normal side are distributed and supplied to the motor windings of both systems.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
Second A system connection means and second B system connection means provided on the output side of each system inverter;
First and second different system connection means provided so as to intersect between both ends of the second A system connection means and both ends of the second B system connection means;
At the time of failure between the inverters of different systems and the motor windings, the system connection means connected to the faulty system converter and inverter and the system connection connected to the different system connection means and the motor winding of the faulty side Switching control means for setting the means off, and setting the system connection means connected to the normal system converter and the different system connection means connected to the normal motor winding to ON, An elevator control system characterized in that the output of the inverter on the normal side is supplied to motor windings of different systems.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
A second A system connection means and a second B system connection means provided between the converter and the inverter for each system;
First and second different system connection means provided so as to intersect between both ends of the second A system connection means and both ends of the second B system connection means;
When any one of the system converters or converters of different systems, inverter failure, the system connection means connected to the system converter on the failure side and the different system connection means are set to OFF, and the system converter on the normal side And switching control means for setting the system connection means connected to the different system connection means to ON or only the system connection means to ON, and distributing the output of the converter on the normal side to the inverters of both systems. Or an elevator control system, wherein the system is supplied to a different normal system inverter.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
Second and third A system connection means and second and third B system connection means respectively provided between the converter and the inverter for each system;
A first different system connection means provided between the common connection line of the second and third A system connection means and the common connection line of the second and third B system connection means;
A fourth A system connection means and a fourth B system connection means provided on the output side of each system inverter;
Second and third different system connection means provided so as to intersect between both ends of the fourth A system connection means and both ends of the fourth B system connection means;
For any of the system converter failures, simultaneous failures of converters and inverters of different systems, failures of any system inverter, simultaneous failures of inverters and motor windings of different systems, The first to fourth system connection means and the second different system connection means connected to the inverter and the motor winding are selectively set to OFF and the normal side converter, inverter and motor winding are connected to the inverter. An elevator control system comprising: switching control means for selectively turning on the first to fourth system connection means and the first to third different system connection means.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
A second A system connection means and a second B system connection means provided between the converter and the inverter for each system;
First and second different system connection means provided so as to intersect between both ends of the second A system connection means and both ends of the second B system connection means;
Third A system connection means and third B system connection means respectively provided on the output side of each system inverter;
Third and fourth different system connection means provided so as to intersect between both ends of the third A system connection means and both ends of the third B system connection means,
An elevator control system comprising: switching control means for selectively turning on / off the system connection means and the different system connection means in accordance with any of the following faults (a) to (d):
I. The switching control means sets off the grid connection means and the different grid connection means that are directly connected to at least the input / output side of the faulty converter when any grid converter fails, and outputs the normal converter The system connection means and the different system connection means connected directly to the side are set to ON.
B. The switching control means includes the system connection means and the different system connection means that are directly connected to at least the input / output side of the converter on the failure side at the time of simultaneous failure of the converter and the inverter of different systems, and the input side of the faulty inverter. The system connection means directly connected to the power supply is set off, and the system connection means on the input side of the normal converter and the different system connection means connected directly to the power side of the normal converter are set on.
C. The switching control means sets off the system connection means and the different system connection means that are directly connected to at least the output side of the faulty inverter at the time of failure of any system inverter, and outputs the normal side inverter The system connection means and the different system connection means that are directly connected to the side are set to ON, and control is performed so that the output of the inverter on the normal side is supplied to the motor windings of both systems of the hoisting machine.
D. The switching control means includes an abnormal motor in addition to the system connection means and the different system connection means that are directly connected to at least the output side of the abnormal inverter at the time of simultaneous failure of the inverter and motor winding of different systems. The system connection means connected to the winding is set off, and the different system connection means connected directly to the output side of the normal inverter is set on.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
Second and third A system connection means and second and third B system connection means respectively provided between the converter and the inverter for each system;
A first different system connection means provided between the common connection line of the second and third A system connection means and the common connection line of the second and third B system connection means;
A fourth A system connection means and a fourth B system connection means provided on the output side of each system inverter;
A second different system connection means provided between the motor windings of the A system and the B system;
An elevator control system comprising: switching control means for selectively turning on / off the system connection means and the different system connection means according to any of the following failures (a) to (c):
I. The switching control means sets the system connection means connected to at least the input / output side of the converter on the abnormal side to OFF when any system converter fails, and is connected to the input / output side of the normal converter The system connection means, the first different system connection means and the system connection means directly connected to the input side of the abnormal drive system inverter are set to ON, and the output of the normal converter is set to the inverters of both drive systems. Control to supply.
B. The switching control means is connected directly to at least the input / output side of the converter on the abnormal side and directly connected to the input side of the inverter on the abnormal side at the time of simultaneous failure of the converter and inverter of different systems. The system connected to the input side of the system connection means, the first different system connection means and the normal side inverter connected directly to the input / output side of the normal converter with the system connection means set to OFF The connection means is set to ON, and control is performed so that the output of the normal converter is supplied to the normal inverter.
C. The switching control means sets off the system connection means connected to the abnormal output side when any system inverter fails, and connects the system connection means connected to the output side of the normal inverter; The second different system connection means is set to ON, and control is performed so that the output of the normal inverter is supplied to the motor windings of both systems constituting the hoisting machine.

A drive system in which the first A system connection means, the A system converter and the A system inverter are connected in series to the power supply, and the B drive in which the first B system connection means, the B system converter and the B system inverter are connected in series. In an elevator control system that is connected in parallel to the system and supplies the output of the A system and B system inverter to the motor windings of the A system and B system that constitute the elevator hoisting machine,
A second A system connection means and a second B system connection means provided between the converter and the inverter for each system;
First and second different system connection means provided so as to intersect between both ends of the second A system connection means and both ends of the second B system connection means;
Third A system connection means and third B system connection means respectively provided on the output side of each system inverter;
A third different system connection means provided between the motor windings of the A system and the B system;
An elevator control system comprising: switching control means for selectively turning on / off the system connection means and the different system connection means according to any of the following failures (a) to (c):
I. The switching control means sets at least the system connection means and the different system connection means connected to the input / output side of the abnormal converter at the time of failure of any system converter, and inputs / outputs the normal converter The system connection means and the different system connection means connected to the side are set to ON, and control is performed so that the output of the converter on the normal side is supplied to the inverters of both drive systems .
B. The switching control means, at the time of simultaneous failure of the converter and inverter of different systems, at least the system connection means connected to the input / output side of the abnormal converter and the different system connection means, as well as the output of the normal converter The system connection means connected to the side is set to OFF, the system connection means on the input side of the normal side converter and the different system connection means on the output side are set to ON, and the output of the normal side converter is driven differently Control to supply to the inverter of the system.
C. The switching control means sets the system connection means connected at least to the output side of the inverter on the abnormal side to OFF when any system inverter fails, and the system connected to the output side of the normal inverter The connecting means and the third different system connecting means are set to ON, and control is performed so that the output of the normal inverter is supplied to the motor windings of both systems constituting the hoisting machine.