JP4429686B2

JP4429686B2 - Elevator equipment

Info

Publication number: JP4429686B2
Application number: JP2003366856A
Authority: JP
Inventors: 裕一坂野
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2003-10-28
Filing date: 2003-10-28
Publication date: 2010-03-10
Anticipated expiration: 2023-10-28
Also published as: JP2005132501A

Description

この発明は、二次電池等で構成された電力蓄積装置を用いて乗りかごの昇降に伴う電力の授受を行うことにより省エネルギを図ったエレベータの停電時運転に関するものである。 The present invention relates to an elevator operation during a power failure that saves energy by transferring power accompanying the raising and lowering of a car using a power storage device composed of a secondary battery or the like.

交流電力を直流に変換し、この直流を可変電圧可変周波数の三相交流に変換して巻上電動機を付勢するエレベータに、二次電池等で構成された電力蓄積装置を付加して、力行運転時は商用電源と併せて電力蓄積装置からも電力の一部を放電させて巻上電動機を付勢し、回生運転時は発生した電力を電力蓄積装置に充電させるようにして省エネルギを図るようにしたエレベータ装置が開示されている（例えば、特許文献１参照）。
図４は、上記エレベータ装置に類似する従来のエレベータ装置の制御回路図であって、電力蓄積装置３１が組み込まれた独立の一体で構成された電力盤３０を、エレベータが据え付けられた後に付加して省エネルギを図ると共に、商用電源１０が停電した場合に上記電力盤３０によって停電時運転をするようにしたものである。 A power storage device composed of a secondary battery or the like is added to an elevator that converts alternating current power into direct current, converts this direct current into three-phase alternating current with variable voltage and variable frequency, and energizes the hoisting motor. During operation, a part of the power is discharged from the power storage device together with the commercial power source to energize the hoisting motor, and during regenerative operation, the generated power is charged in the power storage device to save energy. Such an elevator apparatus is disclosed (for example, see Patent Document 1).
FIG. 4 is a control circuit diagram of a conventional elevator apparatus similar to the above-described elevator apparatus, in which a power panel 30 constituted by an independent unit incorporating a power storage device 31 is added after the elevator is installed. Thus, energy saving is achieved, and when the commercial power supply 10 is cut out of power, the power panel 30 is operated during a power outage.

図４において、巻上機１には主索２が巻き掛けられ、この主索２の一端には乗りかご３が吊持され、他端には釣合錘４が吊持されている。従って、全負荷で上昇する場合は巻上電動機１５は力行運転となり、下降する場合は回生運転となる。力行運転時は、制御盤１１は商用電源１０と電力盤３０の双方から電力を受けて巻上電動機１５を付勢し、回生運転時は電力盤３０に電力を吸収させる。
即ち、商用電源１０の交流電力をコンバータ１２で直流に変換する。直流母線１３には平滑用のコンデンサ１６と、巻上電動機１５の発生する余剰の回生電力を消費するために抵抗器１７とスイッチング素子１８が接続されている。直流母線１３にはインバータ１４が接続されており、このインバータ１４はエレベータ制御装置２１に制御されて直流を可変電圧可変周波数の交流に変換して巻上電動機１５を付勢し、乗りかご３を昇降させる。 In FIG. 4, a main rope 2 is wound around the hoist 1, a car 3 is suspended at one end of the main rope 2, and a counterweight 4 is suspended at the other end. Therefore, the hoisting motor 15 is in a power running operation when it rises at full load, and is in a regenerative operation when it goes down. During the power running operation, the control panel 11 receives power from both the commercial power supply 10 and the power panel 30 to energize the hoisting motor 15 and causes the power panel 30 to absorb power during the regenerative operation.
That is, the AC power of the commercial power supply 10 is converted into DC by the converter 12. The DC bus 13 is connected to a smoothing capacitor 16 and a resistor 17 and a switching element 18 to consume surplus regenerative power generated by the hoisting motor 15. An inverter 14 is connected to the DC bus 13, and this inverter 14 is controlled by an elevator control device 21 to convert a direct current into an alternating current of a variable voltage and a variable frequency to energize the hoisting motor 15. Move up and down.

また、直流母線１３には電力盤３０に組み込まれた電力蓄積装置３１がＤＣ−ＤＣコンバータで構成された充放電装置３２を介して接続されている。充放電制御装置３３は、直流母線１３の電圧を検知し、その検知結果によって充放電装置３２を制御して直流母線１３の直流電力を電力蓄積装置３１へ充放電させるものである。
エレベータ制御装置２１、乗りかご３周りの電気機器及び各階５の乗場周りの電気器具のそれぞれに電力を供給するエレベータ制御電源装置２２、かご制御電源装置２４及び乗場制御電源装置２５へは、三相交流の商用電源１０から供給される。また、乗りかご３の照明灯及びコンセント等のエレベータ電気機器２６へは単相電源２３から供給される。 Further, a power storage device 31 incorporated in the power panel 30 is connected to the DC bus 13 via a charging / discharging device 32 constituted by a DC-DC converter. The charge / discharge control device 33 detects the voltage of the DC bus 13 and controls the charge / discharge device 32 according to the detection result to charge / discharge the DC power of the DC bus 13 to the power storage device 31.
There are three phases to the elevator control power supply 22, the car control power supply 24 and the hall control power supply 25 that supply power to the elevator control device 21, the electric equipment around the car 3, and the electric appliances around the halls on each floor 5. Supplied from an AC commercial power supply 10. Further, a single-phase power source 23 is supplied to the elevator electric equipment 26 such as an illumination lamp and an outlet of the car 3.

ここで、商用電源１０には停電復電検出器４１が接続されており、停電になると停電検出接点４１ａを開放してエレベータ制御電源装置２２の所定個所を遮断して乗りかご３を停止させると共に、停電検出接点４１ｂを閉成させて非常灯等の必要回路を活線状態にする。更に、停電復電検出器４１によって切替装置３５が作動し、電力蓄積装置３１の直流を三相と単相の交流に変換する電力変換装置３４からエレベータ制御電源装置２２、かご制御電源装置２４及び乗場制御電源装置２５へ電力が供給される。
ところで、エレベータ制御電源装置２２の所定個所は停電検出接点４１ａによって開放されている回路は、切替装置３５の作動によって作動する切替検出器３６の接点３６ａで閉成され、また、非常灯等の電源は接点３６ｂで遮断されて、エレベータは運転可能な状態になる。
商用電源１０が停電になった場合、上記処理によってエレベータは電力盤３０から電力の供給を受けて運転を継続する。 Here, a power failure / recovery detector 41 is connected to the commercial power source 10. When a power failure occurs, the power failure detection contact 41a is opened to shut off a predetermined portion of the elevator control power supply 22 and stop the car 3. Then, the power failure detection contact 41b is closed to bring a necessary circuit such as an emergency light into a live line state. Further, the switching device 35 is operated by the power failure / recovery detector 41 to convert the direct current of the power storage device 31 into three-phase and single-phase alternating current to the elevator control power supply device 22, the car control power supply device 24, and Electric power is supplied to the hall control power supply device 25.
By the way, the circuit where the predetermined part of the elevator control power supply device 22 is opened by the power failure detection contact 41a is closed by the contact 36a of the switching detector 36 which is activated by the operation of the switching device 35, and the power supply for emergency lights and the like. Is blocked by the contact 36b, and the elevator is ready for operation.
When the commercial power supply 10 has a power failure, the elevator continues to operate by receiving power from the power panel 30 by the above processing.

特開２００３−４８６７２号公報（段落番号２４〜２５、図１）JP2003-48672A (paragraph numbers 24 to 25, FIG. 1)

従来の省エネルギ形のエレベータ装置は、上記のとおり停電復電検出器４１が商用電源１０の停電を検出すると、切替装置３５によって切り替えて電力蓄積装置３１から受電してエレベータを運転することができるようになっている。
このため、運転を継続することはできるが、電力蓄積装置３１の蓄電量には限度があるので、その運転時間は限られる。
しかし、上記従来のエレベータ装置では、停電が検出されると、単に切替装置３５によって電力蓄積装置３１側へ切り替えるのみであるため、停電時運転の継続によって電力蓄積装置３１が過放電状態になることがある、という問題があった。
また、既設のエレベータに電力盤３０を追加設置する場合、電力盤３０は独立の一体で設置の便を図ったとしても、停電復電検出器４１は商用電源１０の回路に接続し、エレベータ制御電源装置２２は電力蓄積装置３１側へ接続するので、回路変更が複雑で設置工事に時間がかかる、という問題もあった。 When the power failure / recovery detector 41 detects a power failure of the commercial power supply 10 as described above, the conventional energy-saving elevator device can be switched by the switching device 35 to receive power from the power storage device 31 and operate the elevator. It is like that.
For this reason, although the operation can be continued, there is a limit to the amount of power stored in the power storage device 31, and the operation time is limited.
However, in the above-described conventional elevator device, when a power failure is detected, the switching device 35 merely switches to the power storage device 31 side, so that the power storage device 31 enters an overdischarged state due to continued operation during a power failure. There was a problem that there was.
Further, when the power panel 30 is additionally installed in the existing elevator, the power failure recovery detector 41 is connected to the circuit of the commercial power source 10 even if the power panel 30 is independent and integrated, and the elevator control is performed. Since the power supply device 22 is connected to the power storage device 31 side, there is a problem that the circuit change is complicated and installation work takes time.

この発明は、上記問題点を解決するためになされたものであり、停電時運転によって電力蓄積装置が過放電することのないエレベータ装置を提供することを目的とする。
また、既設のエレベータに電力蓄積装置を容易に追加設置することができるエレベータ装置を提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object thereof is to provide an elevator apparatus in which the power storage device does not overdischarge due to operation during a power failure.
It is another object of the present invention to provide an elevator apparatus that can easily add an electric power storage device to an existing elevator.

この出願の発明は、商用電源の交流を直流に変換するコンバータと、上記コンバータと直流母線を介して接続され、上記直流母線を流れる直流を可変電圧可変周波数の交流に変換して巻上電動機を付勢するインバータと、上記直流母線に接続された電力蓄積装置と上記直流母線との間における充放電を制御する充放電制御装置と、上記電力蓄積装置の直流を交流に変換する電力変換装置と、上記インバータを制御する制御装置の接続先を、上記商用電源と上記電力変換装置との間で切り替え可能な切替装置と、上記切替装置と上記制御装置の間における電源の電圧が第１の所定値以下に低下したときに作動して上記切替装置と上記制御装置との間の接続を遮断する停電復電検出器と、上記商用電源と上記切替装置との間における上記商用電源の電圧を検出する電源監視器と、を備え、上記電源監視器で検出された上記商用電源の電圧が正常時の値以上の場合、上記制御装置の接続先が上記商用電源となるように上記切替装置を制御すると共に、上記巻上電動機の回生運転時には充電し力行運転時には放電するように上記充放電制御装置を制御し、上記電源監視器で検出された上記商用電源の電圧が正常時の値よりも低く上記第１の所定値よりも高い第２の所定値以上に低下した場合、上記制御装置の接続先が上記電力変換装置となるように上記切替装置を制御すると共に、上記電力蓄積装置から上記直流母線に電力が供給されるように上記充電制御装置を制御するようにしたものである。

The invention of this application is a converter that converts AC of a commercial power source into DC, and is connected to the converter via a DC bus, and converts the DC flowing through the DC bus into AC of variable voltage and variable frequency to convert a hoisting motor. An inverter to be energized; a charge / discharge control device for controlling charge / discharge between the power storage device connected to the DC bus and the DC bus; and a power converter for converting direct current of the power storage device to AC A switching device that can switch a connection destination of the control device that controls the inverter between the commercial power source and the power converter, and a voltage of the power source between the switching device and the control device is a first predetermined value. A power failure / recovery detector that operates when the voltage drops below a value and cuts off the connection between the switching device and the control device, and the commercial power source between the commercial power source and the switching device. A power supply monitoring device for detecting a voltage, and when the voltage of the commercial power supply detected by the power supply monitoring device is equal to or higher than a normal value, the switching unit is connected to the commercial power supply. And controlling the charge / discharge control device so that it is charged during regenerative operation of the hoisting motor and discharged during powering operation, and the voltage of the commercial power detected by the power supply monitor is normal. The switching device is controlled so that the connection destination of the control device becomes the power conversion device when the power falls to a second predetermined value that is lower than the first predetermined value and lower than the first predetermined value. The charging control device is controlled so that electric power is supplied to the DC bus .

この発明は上記のとおり、商用電源の電圧が第２の所定値以下に低下して電源監視器が作動し、エレベータ装置が電力蓄積装置から電力の供給を受けると、停電復電検出器は電力蓄積装置から供給される電力の電圧を検出して第１の所定値以下に低下すると運転を休止させるようにしたので、商用電源が停電しても運転を継続することができると共に、第１の所定値以下に低下したときは運転を休止するようにしたので、電力蓄積装置が過放電状態になることはない、という効果を奏する。
また、停電運転時は、制御装置と停電復電検出器を併せて電力蓄積装置の回路に接続するようにしたので、既設のエレベータに電力蓄積装置を追加設置する場合の回路変更が簡単で設置工事が容易である、という効果も奏する。 As described above, according to the present invention, when the voltage of the commercial power supply drops below the second predetermined value and the power supply monitor operates and the elevator apparatus receives power supply from the power storage device, Since the operation is stopped when the voltage of the power supplied from the storage device is detected and falls below the first predetermined value, the operation can be continued even if the commercial power supply fails. Since the operation is stopped when the value drops below the predetermined value, the power storage device is not overdischarged.
In addition, during power failure operation, the controller and power failure recovery detector are connected together to the power storage device circuit, so it is easy to change the circuit when installing an additional power storage device in an existing elevator. There is also an effect that the construction is easy.

以下、図面を参照して、この発明の実施の形態について説明する。なお、各図中、同一又は相当する部分には同一符号を付し、説明の重複を省いた。
実施の形態１．
図１から図３は、この発明の実施の形態１に係るエレベータ装置を示す。
図１はエレベータ装置の電気回路を示すブロック図で、エレベータを制御する制御盤１１と、この制御盤１１とは別体の独立した一体で構成された二次電池が組み込まれた電力盤３０が並設されいる。巻上機１には主索２が巻き掛けられ、この主索２の一端には乗りかご３が吊持され、他端には釣合錘４が吊持されている。従って、全負荷で上昇する場合は巻上電動機１５は力行運転となり、下降する場合は回生運転となる。力行運転時は、制御盤１１は商用電源１０と電力盤３０の双方から電力を受けて巻上電動機１５を付勢し、回生運転時は電力盤３０に電力を吸収させる。
即ち、商用電源１０の交流はコンバータ１２で直流に変換される。直流母線１３には平滑用のコンデンサ１６と、巻上電動機１５の発生する余剰の回生電力を消費するために抵抗器１７とスイッチング素子１８が接続されている。直流母線１３にはインバータ１４が接続されており、このインバータ１４はエレベータ制御装置２１に制御されて直流を可変電圧可変周波数の交流に変換して巻上電動機１５を付勢し、乗りかご３を昇降させる。 Embodiments of the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, and duplication of description was omitted.
Embodiment 1 FIG.
1 to 3 show an elevator apparatus according to Embodiment 1 of the present invention.
FIG. 1 is a block diagram showing an electric circuit of an elevator apparatus. A control panel 11 for controlling an elevator and a power panel 30 in which a secondary battery configured separately and independently from the control panel 11 is incorporated. It is installed side by side. A main rope 2 is wound around the hoist 1, a car 3 is suspended at one end of the main rope 2, and a counterweight 4 is suspended at the other end. Therefore, the hoisting motor 15 is in a power running operation when it rises at full load, and is in a regenerative operation when it goes down. During the power running operation, the control panel 11 receives power from both the commercial power supply 10 and the power panel 30 to energize the hoisting motor 15 and causes the power panel 30 to absorb power during the regenerative operation.
That is, the alternating current of the commercial power supply 10 is converted into direct current by the converter 12. The DC bus 13 is connected to a smoothing capacitor 16 and a resistor 17 and a switching element 18 to consume surplus regenerative power generated by the hoisting motor 15. An inverter 14 is connected to the DC bus 13, and this inverter 14 is controlled by an elevator control device 21 to convert a direct current into an alternating current of a variable voltage and a variable frequency to energize the hoisting motor 15. Move up and down.

また、直流母線１３には電力盤３０に組み込まれた二次電池等からなる電力蓄積装置３１がＤＣ−ＤＣコンバータで構成された充放電装置３２を介して接続されている。充放電制御装置３３は、直流母線１３の電圧を検知し、その検知結果によって充放電装置３２を制御して電力蓄積装置３１と直流母線１３との間で直流電力を充放電させるようになっている。
エレベータ制御装置２１、乗りかご３周りの電気機器及び各階５の乗場周りの電気器具にそれぞれ電力を供給するエレベータ制御電源装置２２、かご制御電源装置２４及び乗場制御電源装置２５へは、切替装置３５を介して正常時は三相交流の商用電源１０から供給される。また、かご内照明灯２６ａ、かご内コンセント２６ｂ及びかご上コンセント２６ｃ等のエレベータ電気機器２６も、同様に単相電源２３から供給される。
電力蓄積装置３１には電力変換装置３４が接続されていて、その直流が三相と単相の交流に変換され、商用電源１０の電圧低下時に切替装置３５を介してエレベータ制御電源装置２２等へ電力が供給され、同様にエレベータ電気機器２６へも供給される。
また、商用電源１０には電源監視器４２が接続され、切替装置３５を介して停電復電検出器４１も接続されている。その詳細は図２で説明する。 In addition, a power storage device 31 formed of a secondary battery or the like incorporated in the power panel 30 is connected to the DC bus 13 via a charging / discharging device 32 configured with a DC-DC converter. The charge / discharge control device 33 detects the voltage of the DC bus 13 and controls the charge / discharge device 32 according to the detection result to charge / discharge DC power between the power storage device 31 and the DC bus 13. Yes.
A switching device 35 is connected to the elevator control power supply 22, the car control power supply 24 and the hall control power supply 25 for supplying power to the elevator control device 21, the electrical equipment around the car 3, and the electrical equipment around the landing on each floor 5. During normal operation, it is supplied from a commercial power supply 10 of three-phase alternating current. Similarly, elevator electric devices 26 such as an in-car illumination lamp 26a, an in-car outlet 26b, and an on-car outlet 26c are also supplied from the single-phase power source 23.
A power converter 34 is connected to the power storage device 31, and the direct current is converted into a three-phase alternating current and a single-phase alternating current. Electric power is supplied and is also supplied to the elevator electrical equipment 26 as well.
The commercial power supply 10 is connected to a power supply monitor 42, and is also connected to a power failure / recovery detector 41 via a switching device 35. Details thereof will be described with reference to FIG.

図２は、電力盤３０、特に切替装置３５の詳細を示す回路図で、電源監視器４２が商用電源１０の電圧を検出し、その検出値が正常であって第２の所定値ＶＨを越えている場合、即ち、活線状態の場合は、切替装置３５のスイッチ３５ａ、３５ｂ及び３５ｃは端子ａ側へ投入されてエレベータ制御電源装置２２、停電復電検出器４１、かご制御電源装置２４及び乗場制御電源装置２５は、いずれも商用電源１０から給電される。従って、停電検出接点４１ａは閉成してエレベータ制御装置２１等へ電力を供給し、停電検出接点４１ｂは開放して非常灯等の点灯を阻止している。また、エレベータ電気機器２６へは単相電源２３から供給される。 FIG. 2 is a circuit diagram showing the details of the power panel 30, particularly the switching device 35. The power supply monitor 42 detects the voltage of the commercial power supply 10, and the detected value is normal and exceeds the second predetermined value VH. In other words, in the live line state, the switches 35a, 35b and 35c of the switching device 35 are turned on to the terminal a side, and the elevator control power supply 22, the power failure / recovery detector 41, the car control power supply 24 All of the hall control power supply devices 25 are supplied with power from the commercial power supply 10. Therefore, the power failure detection contact 41a is closed to supply electric power to the elevator control device 21 and the like, and the power failure detection contact 41b is opened to prevent the lighting of an emergency light or the like. The elevator electrical device 26 is supplied from a single-phase power source 23.

商用電源１０の電圧が第２の所定値ＶＨ以下の場合、即ち、停電状態の場合は、電源監視器４２が作動して切替装置３５のスイッチ３５ａ、３５ｂ及び３５ｃは端子ｂ側へ投入される。この投入によってエレベータ制御電源装置２２、停電復電検出器４１、かご制御電源装置２４及び乗場制御電源装置２５は、いずれも電力変換装置３４を介して電力蓄積装置３１から給電される。従って、停電検出接点４１ａは閉成し、停電検出接点４１ｂは開放するので、商用電源１０が正常な場合と同様な状態になる。
また、エレベータ電気機器２６の内、かご内照明灯２６ａへは電力変換装置３４から単相電源が供給され、かご内コンセント２６ｂ及びかご上コンセント２６ｃへは供給されない。
なお、商用電源１０が停電状態から活線状態に復帰して、エレベータ制御電源装置２２を電力蓄積装置３１から商用電源１０へ切り替える場合に、エレベータ制御装置２１から信号線２１ａを介してかご３の着床信号を受けた後、切替装置３５によって切り替えられる。
更に、電源監視器４２の作動信号を受けて充放電制御装置３３は、電力蓄積装置３１単独で巻上電動機１５を駆動するように充放電装置３２を制御する。
電力蓄積装置３１の電力で運転を継続した結果、第１の所定値ＶＬ以下になると、停電復電検出器４１は、エレベータ制御装置２１から信号線２１ａを介して着床信号を受けた後、停電検出接点４１ａを開放してエレベータ制御電源装置２２の回路を遮断し、エレベータの運転を休止させる。 When the voltage of the commercial power supply 10 is equal to or lower than the second predetermined value VH, that is, in the case of a power failure, the power supply monitor 42 is activated and the switches 35a, 35b and 35c of the switching device 35 are turned on to the terminal b side. . As a result, the elevator control power supply device 22, the power failure recovery detector 41, the car control power supply device 24, and the hall control power supply device 25 are all supplied with power from the power storage device 31 via the power conversion device 34. Therefore, the power failure detection contact 41a is closed and the power failure detection contact 41b is opened, so that the commercial power supply 10 is in a normal state.
In addition, the single-phase power is supplied from the power converter 34 to the in-car lighting 26a in the elevator electric device 26, and not to the in-car outlet 26b and the on-car outlet 26c.
When the commercial power supply 10 returns from the power failure state to the live line state and the elevator control power supply device 22 is switched from the power storage device 31 to the commercial power supply 10, the elevator control device 21 connects the signal line 21 a to the car 3. After receiving the landing signal, switching is performed by the switching device 35.
Furthermore, the charge / discharge control device 33 receives the operation signal of the power supply monitor 42 and controls the charge / discharge device 32 so that the hoisting motor 15 is driven by the power storage device 31 alone.
As a result of continuing the operation with the electric power of the power storage device 31, when the power failure / recovery detector 41 receives the landing signal from the elevator control device 21 via the signal line 21a when the first predetermined value VL or less is reached, The power failure detection contact 41a is opened, the circuit of the elevator control power supply device 22 is interrupted, and the operation of the elevator is suspended.

図３は、エレベータ装置の動作を示す流れ図で、図示の処理は所定の時間間隔で繰り返される。手順Ｓ１１で、電源監視器４２が作動したか調べる。商用電源１０が正常であって、第２の所定値ＶＨを越えている場合は電源監視器４２は動作していないので手順Ｓ１２へ移る。この手順Ｓ１２で、切替装置３５が未だ電力蓄積装置３１側へ投入されている場合は、手順Ｓ１３へ移り、かご３が着床し停止したか調べる。かご３が昇降中の場合は処理を終る。即ち、商用電源１０は活線状態に復帰したが、エレベータは引続き電力蓄積装置３１から電力の供給を受けて運転を継続する。手順Ｓ１３で、かご３が停止した場合は、手順Ｓ１４へ移り、電力蓄積装置３１から商用電源１０へ切り替えられ、手順Ｓ１５で、商用電源１０によってエレベータは運転される。
手順Ｓ１２で、切替装置３５が既に商用電源１０側へ投入されて商用電源１０からエレベータ制御電源装置２２等へ電力が供給されている場合は、手順Ｓ１５へ移り、商用電源１０によってエレベータは運転される。 FIG. 3 is a flowchart showing the operation of the elevator apparatus. The illustrated process is repeated at predetermined time intervals. In step S11, it is checked whether the power supply monitor 42 has been activated. If the commercial power supply 10 is normal and exceeds the second predetermined value VH, the power supply monitor 42 is not operating, and the process proceeds to step S12. In this step S12, when the switching device 35 is still turned on to the power storage device 31, the process proceeds to step S13 to check whether the car 3 has landed and stopped. If the car 3 is moving up and down, the process is terminated. That is, although the commercial power source 10 has returned to the live line state, the elevator continues to operate by receiving power supply from the power storage device 31. When the car 3 is stopped in step S13, the process proceeds to step S14, where the power storage device 31 is switched to the commercial power source 10, and the elevator is operated by the commercial power source 10 in step S15.
In step S12, when the switching device 35 is already turned on to the commercial power source 10 and power is supplied from the commercial power source 10 to the elevator control power source device 22 and the like, the procedure proceeds to step S15, and the commercial power source 10 operates the elevator. The

手順Ｓ１１で、商用電源１０が第２の所定値ＶＨ以下に低下している場合は電源監視器４２が作動して手順Ｓ１６へ移る。この手順Ｓ１６で、既に電力蓄積装置３１からエレベータ制御電源装置２２等へ電力が供給されている場合は、そのまま継続して供給される。それまで商用電源１０から電力が供給されていた場合は、電力蓄積装置３１へ切り替えられて電力が供給される。手順Ｓ１７で、エレベータ制御電源装置２２に供給されている電源の電圧が第１の所定値ＶＬを越えている場合は、手順Ｓ１８へ移り、電力蓄積装置３１によってエレベータは運転される。手順Ｓ１７で、電源の電圧が第１の所定値ＶＬ以下の場合は、手順Ｓ１９へ移り、電力蓄積装置３１の蓄電量が十分でないため、着床信号線２１ａを介して乗りかご３が最寄の階５へ着床したことを検知した後、運転を休止させる。
なお、第１の所定値ＶＬは、エレベータ制御装置２１が正常に動作するのを補償する最低の電圧値である。また、第２の所定値ＶＨは、第１の所定値ＶＬよりも高い電圧値であって、商用電源１０に認められている電圧変動の域を越えて低下した電圧値に設定される。 If the commercial power supply 10 has dropped below the second predetermined value VH in step S11, the power supply monitor 42 operates and moves to step S16. If power is already supplied from the power storage device 31 to the elevator control power supply device 22 or the like in step S16, the power is continuously supplied as it is. If power has been supplied from the commercial power supply 10 until then, the power is switched to the power storage device 31 and power is supplied. In step S17, when the voltage of the power supplied to the elevator control power supply device 22 exceeds the first predetermined value VL, the procedure moves to step S18, and the elevator is operated by the power storage device 31. If the voltage of the power source is equal to or lower than the first predetermined value VL in step S17, the process proceeds to step S19, and since the amount of power stored in the power storage device 31 is not sufficient, the car 3 is the closest via the landing signal line 21a. After detecting the landing on the floor 5, the operation is stopped.
The first predetermined value VL is the lowest voltage value that compensates for the normal operation of the elevator control device 21. Further, the second predetermined value VH is a voltage value higher than the first predetermined value VL, and is set to a voltage value that has dropped beyond the range of voltage fluctuation allowed for the commercial power supply 10.

上記実施の形態１によれば、商用電源１０の電圧が第２の所定値ＶＨ以下に低下すると電源監視器４２が作動し、エレベータ装置が電力蓄積装置３１から電力の供給を受けるので、運転を継続させることができる。
また、電力蓄積装置３１から供給される電力の電圧が第１の所定値ＶＬ以下に低下するすると、停電復電検出器４１が作動して運転を休止させるようにしたので、電力蓄積装置３１が過放電状態になることはない。
更に、商用電源１０が停電状態から活線状態に復帰して、エレベータ制御電源装置２２を電力蓄積装置３１から商用電源１０へ切り替える場合に、かご３が停止したときに切替装置３５によって切り替えるようにしたので、切替えに伴ってかご３が急停止する等の特異な動作をすることもない。このため、乗客に違和感を与えることもなく、切り替えることができる。
更にまた、電力盤３０を制御盤１１から独立した一体で構成したので、既設のエレベータに電力蓄積装置を容易に追加設置することができると共に、追加設置に際して、停電復電検出器４１は、エレベータ制御電源装置２２と共に切替装置３５を介して商用電源１０に接続されるので、停電復電検出器４１の接点４１ａ及び４１ｂを補填する回路（図４の接点３６ａ、３６ｂ）は不要となり、設置工事に要する時間を短縮することができる。 According to Embodiment 1 described above, when the voltage of the commercial power supply 10 drops below the second predetermined value VH, the power supply monitor 42 operates and the elevator apparatus receives supply of power from the power storage device 31, so that the operation is performed. Can continue.
In addition, when the voltage of the power supplied from the power storage device 31 falls below the first predetermined value VL, the power failure recovery detector 41 is activated to stop the operation. There is no overdischarge condition.
Furthermore, when the commercial power supply 10 returns from the power failure state to the live line state and the elevator control power supply device 22 is switched from the power storage device 31 to the commercial power supply 10, the switching device 35 is switched when the car 3 is stopped. As a result, the car 3 does not perform a peculiar operation such as a sudden stop due to the switching. For this reason, it can switch, without giving a discomfort to a passenger.
Furthermore, since the power panel 30 is configured integrally with the control panel 11, the power storage device can be easily added to the existing elevator, and at the time of additional installation, the power failure / recovery detector 41 is Since it is connected to the commercial power supply 10 through the switching device 35 together with the control power supply device 22, a circuit (contacts 36a and 36b in FIG. 4) for compensating the contacts 41a and 41b of the power failure / recovery detector 41 is not required, and the installation work Can be shortened.

この発明の実施の形態１におけるエレベータ装置の電気回路を示すブロック図。The block diagram which shows the electric circuit of the elevator apparatus in Embodiment 1 of this invention. 電力盤３０の詳細を示す電気回路の接続図。FIG. 4 is a connection diagram of an electric circuit showing details of the power board 30. エレベータ装置の動作を示す流れ図。The flowchart which shows operation | movement of an elevator apparatus. 従来のエレベータ装置の電気回路を示すブロック図。The block diagram which shows the electric circuit of the conventional elevator apparatus.

Explanation of symbols

１巻上機、２主索、３乗りかご、４釣合錘、５階、１０商用電源、１１制御盤、１２コンバータ、１３直流母線、１４インバータ、１５巻上電動機、１６コンデンサ、１７抵抗器、１８スイッチング素子、２１ａ信号線、２３単相電源、３４電力変換装置、３５切替装置。 1 hoisting machine, 2 main rope, 3 passenger car, 4 counterweight, 5th floor, 10 commercial power supply, 11 control panel, 12 converter, 13 DC bus, 14 inverter, 15 hoisting motor, 16 capacitor, 17 resistor , 18 switching element, 21a signal line, 23 single-phase power supply, 34 power converter, 35 switching device.

Claims

A converter that converts AC of commercial power to DC,
An inverter connected to the converter via a DC bus, converting the DC flowing through the DC bus into AC of variable voltage and variable frequency, and energizing the hoisting motor;
A charge / discharge control device for controlling charge / discharge between the power storage device connected to the DC bus and the DC bus;
A power conversion device that converts direct current of the power storage device into alternating current; and
A switching device capable of switching the connection destination of the control device for controlling the inverter between the commercial power source and the power conversion device;
A power failure / recovery detector that operates when the voltage of the power source between the switching device and the control device drops below a first predetermined value, and disconnects the connection between the switching device and the control device;
A power supply monitor for detecting the voltage of the commercial power supply between the commercial power supply and the switching device ,
When the voltage of the commercial power source detected by the power monitor is equal to or higher than a normal value, the switching device is controlled so that the connection destination of the control device is the commercial power source, and the regenerative power of the hoisting motor is regenerated. Control the charge / discharge control device to charge during operation and discharge during power running,
When the voltage of the commercial power source detected by the power monitor drops below a normal value to a second predetermined value higher than the first predetermined value, the connection destination of the control device is the power An elevator apparatus configured to control the switching apparatus so as to be a conversion apparatus and to control the charging control apparatus so that power is supplied from the power storage apparatus to the DC bus .

The elevator apparatus according to claim 1, wherein the power storage device, the charge / discharge control device, the power conversion device, the power supply monitor, and the switching device are incorporated in an independent integrated power panel.

When the voltage of the power storage device falls below the first predetermined value and the power failure / recovery detector is activated, the operation of the hoisting motor is stopped after landing the car to the nearest floor Item 2. The elevator apparatus according to Item 1.

The elevator according to claim 1, wherein the switching device detects that the car has stopped when the commercial power source returns from the power failure state to the hot line state, and reconnects to the commercial power source as a power source of the elevator control power source device. apparatus.