JPS55144779A - Control power supply device for thyristor - Google Patents

Control power supply device for thyristor

Info

Publication number
JPS55144779A
JPS55144779A JP5185079A JP5185079A JPS55144779A JP S55144779 A JPS55144779 A JP S55144779A JP 5185079 A JP5185079 A JP 5185079A JP 5185079 A JP5185079 A JP 5185079A JP S55144779 A JPS55144779 A JP S55144779A
Authority
JP
Japan
Prior art keywords
voltage
power supply
control power
thyristor
supply device
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
JP5185079A
Other languages
Japanese (ja)
Inventor
Toshio Suzuki
Minoru Tanaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5185079A priority Critical patent/JPS55144779A/en
Publication of JPS55144779A publication Critical patent/JPS55144779A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers

Abstract

PURPOSE:To make it possible to secure the control voltage of the control power supply device which obtains a control power supply-voltage for a thyristor by utilizing the main-circuit voltage of the thyristor, even if the main-circuit voltage is lowered, by providing the device with a DC control power-source which utilizes the main-circuit current. CONSTITUTION:An overcurrent due to an accident with a load 5 causes the secondary voltage of a transformer 2 to lower extraordinarily and also the output of a control power supply device 8 to lower. On the other hand, the overcurrent causes the secondary current of a current transformer 10 to increase and the voltage across a resistor 12 to rise. Consequently, with the overcurrent generated in the load 5, a DC voltage, kept lower than a rated voltage by a Zener diode 13, is supplied to a gate control circuit 9 through a diode 15. Thus, even if the DC voltage of the control power supply device 8 is lowered, the gate control circuit 9 is constantly supplied with a fixed DC-voltage, so that the gate control of thyristor switches 3 and 4 can be normally performed.
JP5185079A 1979-04-25 1979-04-25 Control power supply device for thyristor Pending JPS55144779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5185079A JPS55144779A (en) 1979-04-25 1979-04-25 Control power supply device for thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5185079A JPS55144779A (en) 1979-04-25 1979-04-25 Control power supply device for thyristor

Publications (1)

Publication Number Publication Date
JPS55144779A true JPS55144779A (en) 1980-11-11

Family

ID=12898319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5185079A Pending JPS55144779A (en) 1979-04-25 1979-04-25 Control power supply device for thyristor

Country Status (1)

Country Link
JP (1) JPS55144779A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103475195A (en) * 2013-08-29 2013-12-25 华为技术有限公司 Synchronous rectification control circuit and synchronous rectification control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103475195A (en) * 2013-08-29 2013-12-25 华为技术有限公司 Synchronous rectification control circuit and synchronous rectification control method
CN103475195B (en) * 2013-08-29 2016-04-13 华为技术有限公司 A kind of synchronous commutating control circuit and synchronous rectification control method
US9391534B2 (en) 2013-08-29 2016-07-12 Huawei Technologies Co., Ltd. Comparator based synchronous rectifier control circuit and synchronous rectifier control method

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