JPS5875476A - Control device of dc power supply - Google Patents

Control device of dc power supply

Info

Publication number
JPS5875476A
JPS5875476A JP17378481A JP17378481A JPS5875476A JP S5875476 A JPS5875476 A JP S5875476A JP 17378481 A JP17378481 A JP 17378481A JP 17378481 A JP17378481 A JP 17378481A JP S5875476 A JPS5875476 A JP S5875476A
Authority
JP
Japan
Prior art keywords
signal
power supply
voltage
speed switch
overvoltage
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.)
Pending
Application number
JP17378481A
Other languages
Japanese (ja)
Inventor
Shinichi Sasaya
慎一 笹谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17378481A priority Critical patent/JPS5875476A/en
Publication of JPS5875476A publication Critical patent/JPS5875476A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To prevent the DC output voltage from rising due to load or disconnection by a method wherein a thyristor bridge is put into reversely converted operation by means of a rapid phase adjustor conforming to the signals of load disconnected by a high speed switch. CONSTITUTION:The output from thyristor bridge 2 installed on the secondary side of transformer 1 is supplied for load 5 through the intermediary of a high speed switch and said output voltage and set up value 7 are normally compared with each other by means of comparator 8 and the deviation is fed to a rapid phase adjustor 16 to control said thyristor bridge 2. On the other hand, when said high speed switch 4 is disconnected, a disconnecting signal is transmitted from a switch controller 13 while when overvoltage is flowing, an overvoltage signal is transmitted from a detector 14 to control said rapid phase adjustor 16 and the phase of gate signals from said thyristor bridge 2 is shifted to put the bridge into reversely converted operation. Through these procedures, said output voltage may be prevented from rising without a time lag improving the reliability of a high voltage device.

Description

【発明の詳細な説明】 （ａ）発明の技術分野 本発明は直流電源装置の出方電圧を制御する装置Ｋ係り
、特に負荷しゃ断による直流電圧の上昇を防止し得るよ
うＫした直流電源装置の制御装置に関する。Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a device for controlling the output voltage of a DC power supply, and particularly to a device for controlling the output voltage of a DC power supply, and in particular to a device for controlling the output voltage of a DC power supply. Regarding a control device.

伽）従来技術 第１図は、従来の制御装置を備えた直流電源装置の回路
構成の一例を示すものである。第１図において、１は変
圧器、２はこの変圧器１の２次側に設けられたサイリス
タプリ、ジで、その直流出力を高速スイッチ４を介して
負荷抵抗に供給する。１はコンデンサ、９．１０は直列
接続された分圧器で、夫々上鮎サイリスタプリ、ジ２と
並列に設けている。B) Prior Art FIG. 1 shows an example of the circuit configuration of a DC power supply device equipped with a conventional control device. In FIG. 1, 1 is a transformer, 2 is a thyristor preamp provided on the secondary side of the transformer 1, and supplies its DC output to a load resistor via a high-speed switch 4. 1 is a capacitor, and 9.10 is a voltage divider connected in series, which are provided in parallel with the Kamiayu thyristor preamplifier and the diode 2, respectively.

一方、Ｃはナイリスタッリ、ジ２を制御装置で、つぎＯ
如（構成される。りまシ、電圧設定器１の設定値出力と
、電源装置の出力電圧を分圧器９及び１０によって分圧
した信号は制御装置６の比較器ＩＫ夫々入力され、比較
器８において設定値信号と出力電圧信号とを比較してそ
の偏差を出力する。この比較器８の出力は、増幅器１）
で増幅し且つ／４ルス変換器１２で・ヤルス信号に変換
されてサイリスタプリ、ジ２を制御する。これにより、
サイリスタシリ、ゾ２は・々ルス変換器１１からのパル
スによって直流電圧を調整する。従って、系統電圧の変
動や負荷電流が増減した場合ＫＦ′ｉ、制御装置ｔｇが
サイリスクプリ、ジ２ｔ−自動的に制御し、直流出力電
圧が常に一定に８Ｉ４整されることになる。On the other hand, C is Nairithali, Ji2 is the control device, and then O
As configured, the set value output of the voltage setting device 1 and the signal obtained by dividing the output voltage of the power supply device by the voltage dividers 9 and 10 are respectively input to the comparator IK of the control device 6, 8 compares the set value signal and the output voltage signal and outputs the deviation.The output of this comparator 8 is transmitted to the amplifier 1).
The signal is amplified by the /4 pulse converter 12 and converted into a signal by the /4 pulse converter 12 to control the thyristor preamplifier and diode 2. This results in
The thyristor series 2 adjusts the DC voltage by pulses from the pulse converter 11. Therefore, when the system voltage fluctuates or the load current increases or decreases, KF'i and the control device tg automatically control the silica spring and diode, so that the DC output voltage is always kept constant.

（ｅ）従来技術の問題点 しかし、かかる従来のものにおいて制御装置６は制御を
円滑に行なう目的で数１０ｍ５ｅｃの遅れ要素を有して
いるため、この期間は定電圧制御を期待することができ
ない。、従って、負荷５通電中に高速スイッチ４がし中
断された場合には、変圧器１および系統のインピーダン
スと制御遅れ時間によって直流電圧が過渡振動により上
昇する。そして、この様な直流電圧の上昇は比較的低い
電圧の装置ではあまり問題とならないが、数１０ｋＶ以
上の高電圧の装置では各部の絶縁耐圧中各機器の定格上
から低くすることが望ましいが、従来の制御装置６では
遅れ要素の丸めこれに対処することができないという問
題がある。(e) Problems with the conventional technology However, in the conventional system, the control device 6 has a delay element of several tens of m5ec for the purpose of smooth control, so constant voltage control cannot be expected during this period. . Therefore, when the high-speed switch 4 is interrupted while the load 5 is energized, the DC voltage increases due to transient vibration due to the impedance of the transformer 1 and the system and the control delay time. Such an increase in DC voltage is not much of a problem in devices with relatively low voltages, but in devices with high voltages of several tens of kV or more, it is desirable to lower the dielectric strength voltage of each part in view of the ratings of each device. The conventional control device 6 has a problem in that it cannot deal with rounding of delay elements.

（ｄ）発明の目的 本発明は上記のような問題を解決する丸めに成されたも
ので、その目的は負荷し中断による直流出力電圧の上昇
を確爽に防止することがで暑る直流電源装置の制御装置
を提供するととＫある。(d) Purpose of the Invention The present invention has been made to solve the above-mentioned problems, and its purpose is to reliably prevent the rise in DC output voltage due to load and interruption, thereby reducing the power consumption of hot DC power supplies. K provides a control device for the device.

（・）発明の概要 上記目的を達成するために本発明では、電圧を高速スイ
ッチを介して負荷、へ供給するように構成し、上記高速
スイッチにより負荷を投入、し中断して運転を行なう直
流電源装置において、上記電源装置の直流出力電圧と設
定電圧とを比較する比較器と、上記高速スイッチを投入
またはし中断動作させ且つし中断動作時にスイッチし中
断信号を出力するスイッチ制御器と、上記電源装置′の
直流出力電圧の過電圧を検出し過電圧信号な出力する過
電圧検出器と、サイリスタＫｆ−）信号としての・９ル
ス信号を与えるノタルス変換器と、通常は上記比較器か
らの比較出力を基に上Ｆ／４ルス変換器を調整し、また
上記スイッチしゃ断器信号・または過電圧信号の入力時
は上記サイリスクのｒ−）信号を瞬時に移相して逆変換
運転するように上記・ダルス変換器を調整する急速位相
調整器とを具備して、直流電源装置の制御装置を構成す
るものである。(・) Summary of the Invention In order to achieve the above object, the present invention is configured to supply voltage to a load via a high-speed switch, and operates by turning on and interrupting the load using the high-speed switch. In the power supply device, a comparator that compares the DC output voltage of the power supply device with a set voltage, a switch controller that turns on or interrupts the high-speed switch and switches when the high-speed switch is interrupted and outputs an interrupt signal; An overvoltage detector that detects the overvoltage of the DC output voltage of the power supply unit and outputs an overvoltage signal, a notarus converter that gives a . Based on this, adjust the upper F/4 pulse converter, and when the above switch breaker signal or overvoltage signal is input, adjust the above F/4 pulse converter so that the phase of the r-) signal of the above-mentioned cyrisk is instantaneously shifted to perform reverse conversion operation. The present invention includes a rapid phase adjuster for adjusting the converter, and constitutes a control device for a DC power supply device.

（ｆ）発明の実施例 以下、本発明を第２図に示す一実施例について説明する
。第２図は、本発明の制御装置を備えた直流電源装置の
構成例を示したもので、第　　１図と同一部分には同一
符号を付してその説明を省略する。(f) Embodiment of the Invention Hereinafter, an embodiment of the present invention shown in FIG. 2 will be described. FIG. 2 shows an example of the configuration of a DC power supply device equipped with the control device of the present invention, and the same parts as those in FIG.

第２図において、１３はスイッチ制御器で、前記高速ス
イッチ４の投入およびし中断の動作を制御すると共に、
し中断動作制御時にスイ。In FIG. 2, reference numeral 13 denotes a switch controller, which controls the on/off operation of the high-speed switch 4, and
It is easy to control when interrupting operation.

チし中断信号を出力する。１４は分圧器９，１０によ〕
分圧された電源装置の直流出力電圧の過電圧を検出し過
電圧信号を出力する過電圧検出器、ＩＩＩは上記スイッ
チし中断信号または過電圧信号をシフト信号として選択
出力する選択器である。また、１６は本発明の主体をな
す急速位相調整器で、前記パルス変換器１２と作用して
、上記スイッチし中断信号ま九は過電圧信号が入力され
たことを条件に１前配サイリスタ！リツジ２のｒ−）信
号を急速圧移相してそれを逆変換運転制御する。outputs an interrupt signal. 14 is by voltage divider 9, 10]
An overvoltage detector detects an overvoltage of the divided DC output voltage of the power supply device and outputs an overvoltage signal, and III is a selector that selectively outputs the above-mentioned switch and an interruption signal or an overvoltage signal as a shift signal. Reference numeral 16 denotes a rapid phase adjuster which is the main part of the present invention, and acts with the pulse converter 12 to switch the interrupt signal and output the thyristor 1 to 1 on the condition that an overvoltage signal is input. The r-) signal of the cartridge 2 is rapidly phase-shifted to control its inverse conversion operation.

本制御装置は、比較器８、増幅器１ノ、スイッチ制御！
！に１７％過電圧検出器１４、選択４５、急速位相調整
器１６、ノヤルス変換器１２から構成している。This control device has 8 comparators, 1 amplifier, and switch control!
! It consists of a 17% overvoltage detector 14, a selection 45, a rapid phase adjuster 16, and a Noyals converter 12.

１ 次に１上記のように構成した本装置の作用を説明する。1 Next, the operation of the apparatus configured as described above will be explained.

比較器１では出力電圧信号と設定値信号とを比較し、そ
の偏差出力を増幅器１１で増幅する。増幅器１１の出力
は、制御信号として急速位相調整器ＩＣへ入力式れる。The comparator 1 compares the output voltage signal and the set value signal, and the amplifier 11 amplifies the difference output. The output of the amplifier 11 is input as a control signal to the rapid phase adjuster IC.

一方、スイッチ制御器１３は高速スイッチ４を投入ま九
はし中断すると共にスイッチし中断信号を出力し、これ
を選択器１５へ入力する。また、過電圧検出器１ａＦｉ
直流出力電圧が過電圧となった時、過電圧信号を出力し
てこの信号を選択数５へ入力する。１選択器１５はオア
回路で、スイッチし中断信号、または過電圧信号が入力
され九場合に出力信号を発生し、この信号がシフト（移
相）信号として急速位相調整器１−に入力式れる。急速
位相調整器１６は、通常は増幅器１１（Ｄ出力である制
御信号に従って）４ルス変換器１２を調整しているが、
選択器１５の出力であるシフト信号が入力されると、サ
イリスタプリ、ノ２が逆変換運転するように急速にパル
ス変換器２を調整する。On the other hand, the switch controller 13 turns on and interrupts the high-speed switch 4, outputs an interrupt signal, and inputs this to the selector 15. In addition, overvoltage detector 1aFi
When the DC output voltage becomes an overvoltage, an overvoltage signal is output and this signal is input to the selection number 5. The 1 selector 15 is an OR circuit that switches and generates an output signal when an interrupt signal or an overvoltage signal is input, and this signal is input to the rapid phase adjuster 1- as a shift (phase shift) signal. The rapid phase adjuster 16 normally adjusts the 4-Russ converter 12 (according to the control signal which is the D output) of the amplifier 11;
When the shift signal which is the output of the selector 15 is input, the pulse converter 2 is rapidly adjusted so that the thyristor preamplifier No. 2 performs reverse conversion operation.

従りてかかる構成とすれば、高速スイッチ４が開放され
て負荷５し中断した場合、または直流出力電圧が過電圧
となった場合には選択数５がシフト信号を出力し、この
信号によって急速位相調整器１６が・譬ルス変換器１２
と共に１サイリスクブリツジ２を逆変換運転することで
直流出力・・電圧が低下せられる。かようにして、負荷
し中断時または過電圧発生時の直流過渡電圧を抑制する
ことができる。Therefore, with such a configuration, when the high-speed switch 4 is opened and the load 5 is interrupted, or when the DC output voltage becomes an overvoltage, the selection number 5 outputs a shift signal, and this signal causes the rapid phase shift to occur. The regulator 16 and the analog converter 12
At the same time, the DC output voltage is lowered by performing reverse conversion operation of the one-silicon bridge 2. In this way, it is possible to suppress DC transient voltages when the load is interrupted or when an overvoltage occurs.

表お、上記でシフト信号が解除された後は、通常の直流
定電圧制御を行なう。Note that after the shift signal is released in the above manner, normal DC constant voltage control is performed.

−）発明の変形例 第３図は、本発明の他の実施例構成を示すもので、　１
１１２図と同一部分には同一符号を付しその説明を省略
する。第３図において、１１は変圧器１０１次儒圧設け
ら・れたサイリスタ電圧調整器、１ｇはダイオード整流
器である。このサイリスタ電圧調整器１１は、逆並列接
続された交流スイッチによ）交流電圧を調整し、その後
変圧器１で昇圧又は降圧して°それをダイオード整流器
１８で整流するもので、かかる方式においても高速スイ
ッチ４のし中断時または出力電圧の過電圧時に１サイリ
スク電圧調整器１１のｒ−）信号を一時に移相して直流
出力電圧の上昇を確実に防止することができる。-) Modification of the invention FIG. 3 shows a configuration of another embodiment of the invention. 1
The same parts as in FIG. 112 are given the same reference numerals, and their explanation will be omitted. In FIG. 3, 11 is a thyristor voltage regulator provided with a 101st-order voltage transformer, and 1g is a diode rectifier. This thyristor voltage regulator 11 adjusts the AC voltage (using AC switches connected in antiparallel), then steps up or steps down the voltage with the transformer 1, and rectifies it with the diode rectifier 18. When the high-speed switch 4 is interrupted or the output voltage is overvoltage, the phase of the r-) signal of the 1-silicon voltage regulator 11 can be shifted at once to reliably prevent the DC output voltage from rising.

（ｈ）発明の詳細 な説明したように本発明によれば、高速スイッチの開放
による負荷し中断時また４過電圧発生時に急速位相調整
器に移相（：ｌ／７））信号を与えてナイリスタを逆変
換運転制御するよう圧したので、負荷し中断による直流
出力電圧の上昇を確実に防止することができる極めて信
頼性の高い直流電源装置の制御装置が提供できる。(h) As described in detail, according to the present invention, when a load is interrupted due to the opening of a high-speed switch or when an overvoltage occurs, a phase shift signal (:l/7) is applied to the rapid phase adjuster to By controlling the reverse conversion operation, it is possible to provide an extremely reliable control device for a DC power supply device that can reliably prevent a rise in the DC output voltage due to load and interruption.

【図面の簡単な説明】[Brief explanation of the drawing]

ａ１１図は従来の制御装置を備えた直流電源装置の一例
を示す回路図、第２図は本発明の一実施例を示す回路図
、第３図は本発明の他の実施例を示す回路図である。 １・・・変圧器、２・・・サイリスタプリ、ジ、３・・
・コンデンサ、４・・・高速スイッチ、５・・・負荷、
６・・・制御装置、２・・・電圧設定器、８・・・比較
器、９・・・分圧器、１０・・・分圧器、１１・・・増
幅器、１２・・り臂ルス変換器、１３・・・スイッチ制
御器、１４・・・過電圧検出器、１５・・・選択器、１
６・・・急速位相調整器、１１−・サイリスタ電圧ａｍ
器、１　＃−・・ダイオード整流器。Fig. a11 is a circuit diagram showing an example of a DC power supply device equipped with a conventional control device, Fig. 2 is a circuit diagram showing one embodiment of the present invention, and Fig. 3 is a circuit diagram showing another embodiment of the present invention. It is. 1...Transformer, 2...Thyristor spring, Di, 3...
・Capacitor, 4...High speed switch, 5...Load,
6... Control device, 2... Voltage setter, 8... Comparator, 9... Voltage divider, 10... Voltage divider, 11... Amplifier, 12... Arm converter , 13... Switch controller, 14... Overvoltage detector, 15... Selector, 1
6... Rapid phase adjuster, 11-... Thyristor voltage am
equipment, 1 #-... diode rectifier.

Claims (2)

【特許請求の範囲】[Claims] （１）　　サイリスタプリ、ジにて調整器れた直流電圧
を高速スイッチを介して負荷へ供給するように構成し、
前記高速スイッチによシ負荷を投入、し中断して運転を
行なう直流電源装置において、前記電源装置の直流出力
電圧と設定電圧とを比較する比較器と、前記高速スイッ
チを投入またはし中断動作式せ且つし中断動作時にスイ
ッチし中断信号を出力するスイッチ制御器と、前記電源
装置の直流出力電圧の過電圧を検出し過電圧信号を出力
する過電圧検出器と、前記サイリスタラリッジにゲート
信号としてのノ昔ルス信号を与えるパルス変換器と、通
常は前記比較器からの比較出力を基に前記／ｆルス変換
器を調整し、壕九前記スイッチし中断信号または過電圧
信号の入力時は前記サイリスタツリ、ジのｒ−ト信号を
一時に移相して逆変換運転するように前記パルス変換器
を調整する急速位相調整器とを具備したことを特徴とす
る直流電源装置の制御装置。(1) A thyristor valve is configured to supply regulated DC voltage to the load via a high-speed switch,
A DC power supply device that performs operation by turning on and interrupting a load through the high-speed switch, further comprising a comparator for comparing the DC output voltage of the power supply device with a set voltage, and a type that operates by turning on or interrupting the high-speed switch. a switch controller that switches and outputs an interrupt signal when the interrupt operation occurs; an overvoltage detector that detects an overvoltage of the DC output voltage of the power supply device and outputs an overvoltage signal; In the past, the /f pulse converter was adjusted based on the comparison output from the pulse converter that gave the pulse signal and the comparison output from the comparator. 1. A control device for a DC power supply device, comprising: a rapid phase adjuster for adjusting the pulse converter so as to shift the phase of the r-to signal at once and perform reverse conversion operation. （２）　　サイリスタ電圧調整器にて調整された交流電
圧をダイオード整流器により整流し高速スイッチを介し
て負荷へ供給するように構成し、前記高速スイッチによ
り負荷を投入、し中断して運転を行なう直流電源装置に
おいて、前記電源装置の直流出力電圧と設定電圧とを比
較する比較器と、前記高速スイッチを投入またはし中断
動作させ且つし中断動作時にスイーチし中断信号を出力
するスイッチ制御器と、前配電源装置の直流出力電圧の
過電圧を検出し過電圧信号を出力する過電圧検出器と、
前記サイリスタ電圧調整器に＋’−）信号としての・９
ルス信号を与えるノタルス変換器と、通常は前記比較器
からの比較出力を基に前記／４ルス変換器を調整し、ま
え前記スイッチし中断信号または過電圧信号の入力時は
前記サイリスタ電圧調整器のｒ−）信号を瞬時に移相し
て藏変換運転するように前記／量ルス変換器を調整する
急速位相調整器とを具備したことを特徴とする直流電源
装置の制御装置。(2) A DC voltage regulated by a thyristor voltage regulator is rectified by a diode rectifier and supplied to the load via a high-speed switch, and the load is turned on and interrupted by the high-speed switch for operation. The power supply device includes: a comparator that compares a DC output voltage of the power supply device with a set voltage; a switch controller that turns on or interrupts the high-speed switch and switches and outputs an interrupt signal when the high-speed switch is in the interrupt operation; an overvoltage detector that detects overvoltage in the DC output voltage of the power distribution device and outputs an overvoltage signal;
・9 as a +'-) signal to the thyristor voltage regulator
a notarus converter that provides a pulse signal, and a notarus converter that normally adjusts the /4 russ converter based on the comparison output from the comparator; 1. A control device for a DC power supply device, comprising: r-) a rapid phase adjuster that adjusts the L/L converter so as to instantaneously phase shift the signal and perform a power conversion operation.
JP17378481A 1981-10-30 1981-10-30 Control device of dc power supply Pending JPS5875476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17378481A JPS5875476A (en) 1981-10-30 1981-10-30 Control device of dc power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17378481A JPS5875476A (en) 1981-10-30 1981-10-30 Control device of dc power supply

Publications (1)

Publication Number Publication Date
JPS5875476A true JPS5875476A (en) 1983-05-07

Family

ID=15967083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17378481A Pending JPS5875476A (en) 1981-10-30 1981-10-30 Control device of dc power supply

Country Status (1)

Country Link
JP (1) JPS5875476A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320086A (en) * 2005-05-11 2006-11-24 Nidec Copal Corp Motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320086A (en) * 2005-05-11 2006-11-24 Nidec Copal Corp Motor

Similar Documents

Publication Publication Date Title
US6137277A (en) Static voltage regulator
US4649466A (en) Method and circuit arrangemeant for operating a high voltage direct current line between two alternating voltage systems
JPS5875476A (en) Control device of dc power supply
JPS60221997A (en) X-ray generator having phase advancing circuit in voltage feedback circuit
US4212055A (en) Control for an inverter station
JPH04372525A (en) Switching power supply
JP2003513603A (en) Static regulator
KR20210048262A (en) Apparatus and method for controlling extinction angle of lcc hvdc system
JPH0549163A (en) Dc power supply
JPS63306941A (en) Control device for railway regenerative inverter
JP2592523B2 (en) Power supply control device
JPH04281343A (en) Uninterruptible power supply and switching method
US4621222A (en) Method for improving the dynamic converter drive for a direct current elevator motor
JPH0327724A (en) Control method for parallel operation of rectifier
JP2507434B2 (en) Excitation controller for synchronous machine
JPH0284029A (en) Inverter control method
JPS6338945B2 (en)
JPS60206738A (en) D.c. substation for electric railroad
JPS63213424A (en) Reactive power compensator control system
SU748778A1 (en) Method of control of power-diode-choke ac regulator
JP3053882B2 (en) Reactive power compensator
JPS6048519A (en) Automatic voltage regulating system of power unit
JPS633654A (en) Correction system for fluctuated component of output voltage
JPH06328003A (en) Electric power source for electric dust collector
JPH0582241A (en) Load disconnection detector