JPS57162962A - Gate control circuit for gate turn-off thyristor - Google Patents

Gate control circuit for gate turn-off thyristor

Info

Publication number
JPS57162962A
JPS57162962A JP56046508A JP4650881A JPS57162962A JP S57162962 A JPS57162962 A JP S57162962A JP 56046508 A JP56046508 A JP 56046508A JP 4650881 A JP4650881 A JP 4650881A JP S57162962 A JPS57162962 A JP S57162962A
Authority
JP
Japan
Prior art keywords
gto
gate
thyristor
turn
power source
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
JP56046508A
Other languages
Japanese (ja)
Inventor
Masayoshi Sato
Hiroshi Fukui
Masayuki Hirose
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56046508A priority Critical patent/JPS57162962A/en
Publication of JPS57162962A publication Critical patent/JPS57162962A/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

PURPOSE:To prevent the erroneous firing of a gate turn-OFF thyristor (GTO) by closing a switch of a reverse bias circuit having a DC power source and a series circuit of switches during the OFF period of the GTO. CONSTITUTION:Circuits 8, 9, 11 for supplying OFF gate currents to turn a gate turn-OFF thyristor (GTO) and reverse bias circuits 2, 3 for preventing the erroneous operation by reversely biasing the gate at the OFF time of the GTO are provided. When the switch 3 is closed during the OFF period of the GTO, the voltage of a DC power source 2 is applied directly to the GTO. The tail current of the GTO at the turning-OFF time of the GTO and the displacing current at the abruptly changing time of an anode volage flow through the power source 2, but since the impedance of passage is small, the variation in the gate voltage of the GTO is small. Accordingly, the GTO is not erroneously fired due to the application of the positive voltage.
JP56046508A 1981-03-31 1981-03-31 Gate control circuit for gate turn-off thyristor Pending JPS57162962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046508A JPS57162962A (en) 1981-03-31 1981-03-31 Gate control circuit for gate turn-off thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046508A JPS57162962A (en) 1981-03-31 1981-03-31 Gate control circuit for gate turn-off thyristor

Publications (1)

Publication Number Publication Date
JPS57162962A true JPS57162962A (en) 1982-10-06

Family

ID=12749191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046508A Pending JPS57162962A (en) 1981-03-31 1981-03-31 Gate control circuit for gate turn-off thyristor

Country Status (1)

Country Link
JP (1) JPS57162962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130957A (en) * 1984-07-18 1986-02-13 Fuji Electric Co Ltd Drive device of semiconductor switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130957A (en) * 1984-07-18 1986-02-13 Fuji Electric Co Ltd Drive device of semiconductor switch

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