JPH07101974B2 - Frequency converter - Google Patents
Frequency converterInfo
- Publication number
- JPH07101974B2 JPH07101974B2 JP60162066A JP16206685A JPH07101974B2 JP H07101974 B2 JPH07101974 B2 JP H07101974B2 JP 60162066 A JP60162066 A JP 60162066A JP 16206685 A JP16206685 A JP 16206685A JP H07101974 B2 JPH07101974 B2 JP H07101974B2
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- converter
- voltage
- circuit
- constant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Description
【発明の詳細な説明】 ［発明の技術分野］ 本発明は、直流送電あるいは交流系統の連系に使用され
る順変換器動作する変換装置と、逆変換器動作をする変
換装置から成る周波数変換装置に関するものである。TECHNICAL FIELD OF THE INVENTION The present invention relates to a frequency converter including a conversion device that operates as a forward converter and a conversion device that operates as an inverse converter, which is used for direct current transmission or interconnection of an alternating current system. It relates to the device.
［発明の技術的背景と問題点］ 従来の周波数変換装置の概略構成とその制御回路の概略
ブロック図を第４図に示す。周波数変換装置の主回路
は、順変換器動作をする変換器５−１と、逆変換動作を
する変換器５−２の直流側が相互に直流線路７で接続さ
れるように構成され、各変換装置は他励式変換器5,直流
リアクトル４及び変換器用変圧器3,しゃ断器２で構成さ
れ、それぞれの変換装置の交流側は交流系統１−1,1−
２にそれぞれ接続されている。かゝる周波数変換装置
は、融通電力が電力基準値に追従する様に制御されてい
る。周波数変換装置全体として、１つの定電力制御回路
が設けられており、その定電力制御回路は、第４図に示
すように構成されている。電力設定器21で融通電力の電
力基準値（Pdp）が設定され、融通電力は電力検出器22
で検出され、検出された電力検出値信号（Pd）と、前記
電力基準値（Pdp）が加算器23で図示の極性で加算さ
れ、電力制御調整器24に入力される。[Technical Background and Problems of the Invention] FIG. 4 shows a schematic configuration of a conventional frequency converter and a schematic block diagram of its control circuit. The main circuit of the frequency conversion device is configured such that the converter 5-1 that performs a forward converter operation and the converter 5-2 that performs an inverse conversion operation are connected to each other through a DC line 7 and the respective DC conversions are performed. The device is composed of a separately excited converter 5, a DC reactor 4, a converter transformer 3, and a circuit breaker 2. The AC side of each converter is an AC system 1-1, 1-
2 are connected to each. Such a frequency conversion device is controlled so that the interchange power follows the power reference value. One constant power control circuit is provided as the entire frequency conversion device, and the constant power control circuit is configured as shown in FIG. The power reference value (Pdp) of the interchange power is set by the power setter 21, and the interchange power is detected by the power detector 22.
The power detection value signal (Pd) detected by the above and the power reference value (Pdp) are added by the adder 23 with the polarities shown in the figure and input to the power control adjuster 24.
電力制御調整器24の出力である電流基準値信号（Idp）3
1は順変換器動作をしている他励式変換器５−１の制御
装置及び逆変換器動作をする他励式変換器５−２の制御
装置に入力される。制御装置には定電流制御回路が設け
られており、定電流制御回路は、直流電流検出器32,加
算器33,直流電流調整器34とで構成され、前記電流基準
値信号31に直流電流が追従するように制御される。逆変
換器動作をする他励式変換器５−２には、逆変換器動作
をさせるために必要な電流マージン信号（△Idp）が電
流マージン設定器35から加算器33−２に入力されている
と共に転流失敗を防止し、最小の余裕角を確保して逆変
換器動作をさせるための定余裕角制御回路36が具備さ
れ、進み優先回路37で電流制御調整器34−２の出力（定
電流制御回路の出力）と定余裕角制御回路36の出力で、
変換器５−２の制御進み角として進んでいる方が選択さ
れるように構成されている。Current reference value signal (Idp) 3 output from the power control regulator 24
1 is input to the controller of the separately excited converter 5-1 operating as a forward converter and the controller of the separately excited converter 5-2 operating as an inverse converter. The controller is provided with a constant current control circuit, the constant current control circuit is composed of a DC current detector 32, an adder 33, a DC current regulator 34, the DC current in the current reference value signal 31. Controlled to follow. In the separately excited converter 5-2 which operates as an inverse converter, a current margin signal (ΔIdp) necessary for operating the inverse converter is input from the current margin setter 35 to the adder 33-2. At the same time, a constant margin angle control circuit 36 for preventing commutation failure and ensuring a minimum margin angle to operate the inverse converter is provided, and the advance priority circuit 37 outputs the output of the current control regulator 34-2 (constant The output of the current control circuit) and the output of the constant margin angle control circuit 36,
The control lead angle of the converter 5-2 is selected so that the lead angle is advanced.
位相制御回路38は前記定電流制御回路あるいは定余裕角
制御回路からの信号を受けて変換器５の制御進み角を決
定し、変換器５の点弧信号をパルス増巾器39を介して変
換器５に送出する。以上のように構成されて周波数変換
装置の融通電力は前記電力基準値に追従するように制御
され、順変換器動作をする変換装置は直流電流を制御を
し、逆変換器動作をする変換装置は他励式変換器５−２
の余裕角を一定にするように制御されるのが一般的であ
り、かゝる技術は公知の技術であるので詳細な説明は省
略する。The phase control circuit 38 receives the signal from the constant current control circuit or the constant margin angle control circuit to determine the control lead angle of the converter 5, and converts the ignition signal of the converter 5 via the pulse amplifier 39. To the container 5. The interchangeable power of the frequency converter configured as described above is controlled so as to follow the power reference value, and the converter that performs the forward converter operation controls the DC current, and the converter that performs the inverse converter operation. Is a separately excited converter 5-2
Is generally controlled so that the allowance angle is constant, and since such a technique is a known technique, detailed description thereof will be omitted.
かゝる周波数変換装置では、協調をはかって運転するた
めに順変換器動作する変換装置の制御装置と、逆変換器
動作をする変換装置の制御装置に、定電力制御回路の出
力である前記電流基準値信号31を入力する必要がある。
直流送電系では当然のことながら各変換器５−1,5−２
は互いに離れた地点に設置されるので前記電流基準値信
号31を伝送するためにマイクロ回線等を利用した伝送装
置が必要であった。In such a frequency converter, the controller of the converter that operates the forward converter and the controller of the converter that operates the inverse converter in order to operate in a coordinated manner are output to the controller of the constant power control circuit. It is necessary to input the current reference value signal 31.
In the DC power transmission system, it goes without saying that each converter 5-1 and 5-2
Since they are installed at points distant from each other, a transmission device using a micro circuit or the like is required to transmit the current reference value signal 31.
［発明の目的］ 本発明の目的は定電力制御回路の出力を伝送する必要の
ない周波数変換装置を提供することにある。[Object of the Invention] An object of the present invention is to provide a frequency conversion device that does not need to transmit the output of the constant power control circuit.
［発明の概要］ 本発明は、順変換器として動作する変換装置と逆変換器
として動作する自励式逆変換装置で周波数変換装置を構
成し、前記変換装置の制御装置の主制御として定電力制
御回路、従制御として定電流制御回路を設け、前記自励
式逆変換装置の制御装置の主制御として定電圧制御回
路、従制御として相差角制御回路を設けて、前記変換装
置側で、融通電力の設定をして融通電力を制御し、前記
自励式変換装置側で直流電圧を制御することにより、融
通電力を制御するようにしたものである。SUMMARY OF THE INVENTION According to the present invention, a frequency converter is configured by a converter that operates as a forward converter and a self-excited inverse converter that operates as an inverse converter, and a constant power control is performed as a main control of a controller of the converter. A constant current control circuit is provided as a secondary control circuit, a constant voltage control circuit is provided as the main control of the control device of the self-excited inverse conversion device, and a phase difference angle control circuit is provided as the secondary control, so that the conversion power side has The flexible power is controlled by setting and the flexible power is controlled, and the flexible power is controlled by controlling the DC voltage on the side of the self-exciting converter.
［発明の実施例］ 本発明の実施の一例として周波数変換装置の概略構成
と、その制御回路の概略ブロック図を第１図に示す。従
来例で説明した機能と同一のものは同一符号を付し、以
下詳細説明を省略する。[Embodiment of the Invention] FIG. 1 shows a schematic configuration of a frequency conversion device and a schematic block diagram of a control circuit thereof as an example of implementation of the present invention. The same functions as those described in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted below.
順変換器動作をする変換装置の制御装置は、主制御とし
て電力設定器21,融通電力を検出する電力検出器22,加算
器23,電力制御調整器24とで構成される定電力制御回路
と、従制御として、直流電流基準値信号31,直流電流検
出器32,加算器33,直流電流制御調整器34とから構成され
る定電流制御回路と、位相制御回路38,点弧信号を他励
式変換器５に送出するパルス増巾回路39とで構成され
る。The controller of the converter that operates the forward converter operates as a main control, a power setter 21, a power detector 22 for detecting the interchange power, an adder 23, and a constant power control circuit composed of a power control adjuster 24. As a secondary control, a constant current control circuit composed of a DC current reference value signal 31, a DC current detector 32, an adder 33, and a DC current control adjuster 34, a phase control circuit 38, and an ignition signal are separately excited. It is composed of a pulse amplification circuit 39 for sending to the converter 5.
逆変換器動作をする自励式変換装置は一例として第２図
に示すように、ゲート・ターンオフサイリスタ11−１〜
11−６と、ダイオード12−１〜12−６を逆並列接続した
回路を３相結線した自励式逆変換器６を具備して構成さ
れている。自励式逆変換装置は従制御として一般にフェ
ーズロックループ回路（PLL回路）と呼称されるPLL回路
を利用した相差角制御回路が設けられている。相差角制
御回路は逆変換器動作をする自励式逆変換装置の交流系
統１−２即ち、受電系統の電圧を検出し、位相差検出回
路41に入力するための電圧変成器40とカウンター回路45
の出力と前記受電系統の電圧の位相差を検出する位相差
検出回路41と、位相差検出回路41の出力信号である位相
差信号と後述する主制御回路の出力信号である相差角基
準信号49とを図示の極性で加算する加算器42と加算器42
の出力である誤差信号を誤差増巾し、前記相差角基準値
信号に、前記位相差検出回路41の出力信号である位相差
信号が追従するように制御するための相差角制御調整器
43と相差角制御回路43の出力信号が増加すると発振周波
数が増加し、前記相差角制御回路43の出力信号が減少す
るとその発振周波数が減少する電圧制御形発振回路44と
電圧制御形発振回路45の出力信号を前記位相差検出回路
41の入力信号として適切な信号に変換し、かつ、自励式
逆変換器６の点弧信号として適切な信号に変換するため
のカウンター回路45とで構成され、パルス増巾回路46
は、前記カウンター回路45の点弧信号を自励式逆変換器
６に送出する。自励式逆変換装置の主制御は、定電圧制
御回路として動作し、直流電圧を設定するための直流電
圧設定器51と直流電圧を直流電圧を検出する直流電圧検
出器52と前記直流電圧設定器51の出力信号である直流電
圧基準値信号と前記直流電圧検出器52の出力信号である
直流電圧検出値信号とを図示の極性で加算する加算器53
と、加算器53の出力信号である誤差信号を反転誤差増巾
して直流電圧を制御する反転式の直流電圧調整器54とで
構成される。自励式逆変換装置の制御装置としては主制
御の定電圧制御回路の出力（直流電圧調整器54の出力）
信号が従制御の相差角制御回路の相差角基準信号49とな
るように構成される。A self-excited converter that operates as an inverse converter is, for example, as shown in FIG. 2, gate turn-off thyristors 11-1 to 11-1.
11-6 and a self-excited inverse converter 6 in which a circuit in which diodes 12-1 to 12-6 are connected in anti-parallel is three-phase connected. The self-excited inverse converter is provided with a phase difference angle control circuit using a PLL circuit generally called a phase-locked loop circuit (PLL circuit) as a secondary control. The phase difference angle control circuit detects the voltage of the AC system 1-2 of the self-excited inverse converter that operates the inverse converter, that is, the voltage of the power receiving system, and inputs it to the phase difference detection circuit 41. The voltage transformer 40 and the counter circuit 45.
Phase difference detection circuit 41 for detecting the phase difference between the output and the voltage of the power receiving system, the phase difference signal which is the output signal of the phase difference detection circuit 41 and the phase difference angle reference signal 49 which is the output signal of the main control circuit described later. And 42 with the polarities shown in the figure.
The phase difference angle control adjuster for increasing the error of the error signal which is the output of the phase difference angle control value signal so that the phase difference signal which is the output signal of the phase difference detection circuit 41 follows the phase difference angle reference value signal.
When the output signal of the phase difference angle control circuit 43 and 43 increases, the oscillation frequency increases, and when the output signal of the phase difference angle control circuit 43 decreases, the oscillation frequency decreases.The voltage control type oscillation circuit 44 and the voltage control type oscillation circuit 45 Output signal of the phase difference detection circuit
41 and a counter circuit 45 for converting an appropriate signal as an input signal of 41 and an appropriate signal as an ignition signal of the self-excited inverse converter 6, and a pulse width increasing circuit 46.
Sends the ignition signal of the counter circuit 45 to the self-excited inverse converter 6. The main control of the self-excited inverse converter operates as a constant voltage control circuit, a DC voltage setting device 51 for setting a DC voltage, a DC voltage detecting device 52 for detecting a DC voltage, and the DC voltage setting device. An adder 53 for adding the DC voltage reference value signal, which is the output signal of 51, and the DC voltage detection value signal, which is the output signal of the DC voltage detector 52, with the polarities shown.
And an inversion type DC voltage regulator 54 for controlling the DC voltage by increasing the inversion error of the error signal which is the output signal of the adder 53. The output of the constant voltage control circuit of the main control as the control device of the self-excited inverse converter (the output of the DC voltage regulator 54)
The signal is configured to be the phase difference angle reference signal 49 of the phase difference angle control circuit of the slave control.
一般に自励式逆変換器６の出力電圧をEo,交流系統１−
２の系統電圧をEtとし前記出力電圧EOと前記系統電圧Et
との間のリアクタンスをXs,又電圧の位相差即ち相差角
をδとすると、そのベクトル図は第３図に示すようにな
り、自励式逆変換器６から交流系統１−２に融通される
電力Ｐは で表わされるのは衆知の事実である。Generally, the output voltage of the self-excited inverse converter 6 is E o , AC system 1-
The system voltage of 2 is E t, and the output voltage E O and the system voltage E t
Let X s be the reactance between and, and δ be the phase difference of the voltage, that is, the phase difference angle, and the vector diagram will be as shown in FIG. 3, and the self-excited inverse converter 6 will be interchanged with the AC system 1-2. Power P It is a fact of public knowledge.
ところで本発明では、順変換器動作をする変換装置は主
制御として融通電力を制御する定電力制御回路と従制御
として直流電流を制御する定電流制御回路を具備してい
るので、今、例えば電力設定器21を操作して電力基準値
（Pdp）を増加させ融通電力を増加させようとすると、
電力制御調整器24の出力である直流電流基準値信号31が
増加し、周波数変換装置の直流電流が増加することとな
る。一方、自励式逆変換装置側での動作を考えると、リ
アクタンスXsは一定の値であり、又、交流系統１−２の
電圧は一定であるので前記相差角δが一定であると仮定
すると前記（１）式で自励式逆変換器６の出力電圧Eoが
変化することになる。ところで、自励式逆変換器６の出
力電圧Eoと自励式逆変換器６の入力電圧がある直流電圧
Edとは比例の関係にあることは衆知の事実であるので、
先に仮定したように、相差角δが一定であると前記直流
電圧Edが増加することになる。By the way, in the present invention, since the conversion device that performs the forward converter operation includes the constant power control circuit that controls the interchange power as the main control and the constant current control circuit that controls the direct current as the slave control, for example, the power When the setter 21 is operated to increase the power reference value (Pdp) to increase the interchange power,
The DC current reference value signal 31 that is the output of the power control adjuster 24 increases, and the DC current of the frequency conversion device increases. On the other hand, considering the operation on the side of the self-excited inverse converter, it is assumed that the reactance X s has a constant value and the voltage of the AC system 1-2 is constant, so that the phase difference angle δ is constant. The output voltage E o of the self-excited inverse converter 6 changes according to the equation (1). By the way, the output voltage E o of the self-excited inverse converter 6 and the DC voltage with the input voltage of the self-excited inverse converter 6 are
It is a well-known fact that there is a proportional relationship with E d , so
As assumed above, if the phase difference δ is constant, the DC voltage E d will increase.
本発明では、前述したように、主制御として定電圧制御
回路、従制御として相差角制御回路が設けられている。
従って直流電圧Edが増加すると定電圧制御調整器54の出
力信号である相差角基準値信号49が増加することとな
る。従制御の相差角制御回路は、前記相差角基準値信号
49が増加するので相差角基準値信号49に追従するよう
に、位相差検出回路の入力信号が変化することになる。
こゝで位相差検出回路41の一方の入力は、交流系統１−
２の系統電圧であるのでもう一方の入力であるカウンタ
ー回路45の信号が変化することになるがこの信号は第１
図で示すように自励式逆変換器６の点弧信号に相当して
いるので、自励式逆変換器６の出力電圧の位相と交流系
統１−２との位相差、即ち、相差角δが前記位相差基準
信号49に追従して増加することになる。以上の動作によ
り、相差角δが増加し、直流電圧は直流電圧設定器51
で、設定された直流電圧に制御され、相差角δが変化す
ることになる。In the present invention, as described above, the constant voltage control circuit is provided as the main control and the phase difference angle control circuit is provided as the sub-control.
Therefore, when the DC voltage E d increases, the phase difference angle reference value signal 49 which is the output signal of the constant voltage control adjuster 54 also increases. The phase difference angle control circuit of the sub-control uses the phase difference angle reference value signal.
Since 49 increases, the input signal of the phase difference detection circuit changes so as to follow the phase difference angle reference value signal 49.
Here, one input of the phase difference detection circuit 41 is the AC system 1-
Since it is the system voltage of 2, the signal of the counter circuit 45 which is the other input changes, but this signal is the first
Since it corresponds to the ignition signal of the self-excited inverse converter 6 as shown in the figure, the phase difference between the phase of the output voltage of the self-excited inverse converter 6 and the AC system 1-2, that is, the phase difference angle δ is It follows that the phase difference reference signal 49 increases. By the above operation, the phase difference angle δ increases, and the DC voltage is set to the DC voltage setting unit 51.
Then, the set DC voltage is controlled, and the phase difference angle δ changes.
以上まとめて、順変換器動作をしている変換装置の制御
装置で融通電力を増加させようとして、電力基準値Pdp
を増加させると、自励式逆変換装置の制御装置は、直流
電圧を一定に保ちつつ相差角δを増加させて融通電力を
交流系統１−２に送電するように動作する。逆に電力基
準値Pdpを減少させた場合には以上説明した動作と逆の
動作を行ない直流電圧を一定に保ちつつ相差角δが減少
することは明らかである。In summary, in order to increase the interchange power in the controller of the converter operating the forward converter operation, the power reference value Pdp
Is increased, the control device of the self-excited inverse conversion device operates so as to increase the phase difference angle δ while keeping the DC voltage constant and transmit the interchange power to the AC system 1-2. On the contrary, when the power reference value Pdp is decreased, it is apparent that the operation opposite to the operation described above is performed and the phase difference angle δ decreases while keeping the DC voltage constant.
即ち、本発明によれば電力基準Pdpに相当した融通電力
が、直流電圧を一定に保ちつつ交流系統１−１から交流
系統１−２に送電される。That is, according to the present invention, the interchange power corresponding to the power reference Pdp is transmitted from the AC system 1-1 to the AC system 1-2 while keeping the DC voltage constant.
［発明の効果］ 以上説明のように、本発明によれば順変換器動作をする
変換装置の制御装置と自励式逆変換装置の制御装置との
間に融通電力に関連した制御信号を授受することなく、
即ち、従来例の電流基準値信号を相互に伝送する必要が
ない、周波数変換装置を具現することができる。[Effects of the Invention] As described above, according to the present invention, the control signal related to the interchange power is exchanged between the control device of the conversion device which operates the forward converter and the control device of the self-excited inverse conversion device. Without
That is, it is possible to implement a frequency conversion device that does not need to mutually transmit the current reference value signal of the conventional example.
第１図は本発明の一実施例を示すブロック図、第２図は
自励式逆変換器の一例を示す主回路構成図、第３図は自
励式逆変換装置の動作を説明するためのベクトル図、第
４図は従来例を示すブロック図である。 １−1,1−２……交流系統、２−1,2−２……しゃ断器 ３−1,3−２……交換器用変圧器 ４−1,4−２……直流リアクトル 5,5−1,5−２……他励式変換器 ６……自励式逆変換器、７……直流線路 11−１〜11−６……ゲートターンオフサイリスタ 12−１〜12−６……ダイオード、21……電力設定器 22……電力検出器、23,33,42,53……加算器 24……電力制御調整器、31……直流電流基準値信号 32−1,32−２……直流電流検出器 34……直流電流制御調整器 36……定余裕角制御回路、37……進み優先回路 38,38−1,38−２……位相制御回路 39,39−1,39−２……パルス増巾回路 35……電流マージン設定器、40……電圧変成器 41……位相差検出回路、43……相差角制御調整器 44……電圧制御形発振回路、45……カウンター回路 46……パルス増巾回路、51……直流電圧設定器 52……直流電圧検出器、54……直流電圧制御調整器 49……相差角基準信号FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a main circuit configuration diagram showing an example of a self-excited inverse converter, and FIG. 3 is a vector for explaining the operation of the self-excited inverse converter. 4 and 5 are block diagrams showing a conventional example. 1-1, 1-2 ... AC system, 2-1, 2-2 .. Breaker 3-1, 3-2 .. Transformer for transformer 4-1, 4-2 .. DC reactor 5,5 -1,5-2-2 Separately-excited converter 6 ... Self-excited inverse converter, 7 ... DC line 11-1 to 11-6 ... Gate turn-off thyristor 12-1 to 12-6 ... Diode, 21 ...... Power setter 22 …… Power detector, 23,33,42,53 …… Adder 24 …… Power control regulator, 31 …… DC current reference value signal 32-1, 32-2 …… DC current Detector 34 …… DC current control regulator 36 …… Constant margin angle control circuit, 37 …… Advance priority circuit 38,38-1,38-2 …… Phase control circuit 39,39-1,39-2 …… Pulse amplification circuit 35 …… Current margin setter, 40 …… Voltage transformer 41 …… Phase difference detection circuit, 43 …… Phase difference angle control regulator 44 …… Voltage controlled oscillator circuit, 45 …… Counter circuit 46… … Pulse amplification circuit, 51 …… DC voltage setting device 52 …… Flow voltage detector, 54 ...... DC voltage control regulator 49 ...... phase angle reference signal
Claims (1)
流側端子が直流リアクトルを介して直流回路に接続され
る順変換器として動作する他励式変換器と、他方の交流
系統に交流側端子が接続され直流側端子が前記直流回路
に接続される逆変換器として動作する自励式逆変換装置
と、前記一方の交流系統から前記他方の交流系統へ融通
する電力を制御するために前記他励式変換器側に設けら
れる定電力制御回路と、該定電力制御回路の出力信号を
電流基準信号として印加される定電流制御回路と、該定
電流制御回路の出力信号が印加され前記他励式変換器の
点弧位相を制御する位相制御回路と、前記直流回路の電
圧を制御するために前記自励式逆変換装置側に設けられ
る定電圧制御回路と、該定電圧制御回路の出力信号を前
記他方の系統電圧と前記自励式逆変換装置が発生する電
圧との相差角基準として印加される相差角制御回路と、
該相差角制御回路の出力信号に応じて前記自励式逆変換
装置の点弧タイミングを制御するゲート制御回路を具備
した周波数変換装置。1. A separately excited converter that operates as a forward converter in which an alternating current side terminal is connected to one alternating current system and a direct current side terminal is connected to a direct current circuit via a direct current reactor, and an alternating current side is connected to the other alternating current system. A self-excited inverse conversion device that operates as an inverse converter in which terminals are connected and a DC side terminal is connected to the DC circuit, and the other one for controlling the power exchanged from the one AC system to the other AC system. A constant power control circuit provided on the excitation converter side, a constant current control circuit to which an output signal of the constant power control circuit is applied as a current reference signal, and the other excitation conversion circuit to which the output signal of the constant current control circuit is applied. Phase control circuit for controlling the ignition phase of the voltage regulator, a constant voltage control circuit provided on the side of the self-excited inverse converter for controlling the voltage of the DC circuit, and an output signal of the constant voltage control circuit for the other System voltage Wherein the phase difference angle control circuit self-commutated inverters are applied as phase angle reference for the voltage generated,
A frequency conversion device comprising a gate control circuit for controlling the ignition timing of the self-excited inverse conversion device according to an output signal of the phase difference angle control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162066A JPH07101974B2 (en) | 1985-07-24 | 1985-07-24 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162066A JPH07101974B2 (en) | 1985-07-24 | 1985-07-24 | Frequency converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6225830A JPS6225830A (en) | 1987-02-03 |
| JPH07101974B2 true JPH07101974B2 (en) | 1995-11-01 |
Family
ID=15747441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60162066A Expired - Lifetime JPH07101974B2 (en) | 1985-07-24 | 1985-07-24 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07101974B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5514176B2 (en) * | 1972-05-01 | 1980-04-14 | ||
| JPS5833774B2 (en) * | 1976-03-15 | 1983-07-22 | 株式会社東芝 | Control device for frequency converter |
-
1985
- 1985-07-24 JP JP60162066A patent/JPH07101974B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6225830A (en) | 1987-02-03 |
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