JPS5785572A - Snubber circut for gate turn-off thyristor - Google Patents

Snubber circut for gate turn-off thyristor

Info

Publication number
JPS5785572A
JPS5785572A JP55159545A JP15954580A JPS5785572A JP S5785572 A JPS5785572 A JP S5785572A JP 55159545 A JP55159545 A JP 55159545A JP 15954580 A JP15954580 A JP 15954580A JP S5785572 A JPS5785572 A JP S5785572A
Authority
JP
Japan
Prior art keywords
gto3
thyristor
gto
capacitor
charged
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
JP55159545A
Other languages
Japanese (ja)
Inventor
Arata Kimura
Hiroshi Fukui
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 JP55159545A priority Critical patent/JPS5785572A/en
Publication of JPS5785572A publication Critical patent/JPS5785572A/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
    • H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors

Landscapes

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

Abstract

PURPOSE:To improve the reliability of a snubber circuit for a gate turn-off thyristor (GTO) at the time of turning OFF the GTO by conducting the switching means of the snubber circuit in different directivities in ON and OFF states of the GTO. CONSTITUTION:When a GTO3 is conducted in the state that a capacitor 10 is charged to a power voltage by the conduction of a thyristor 11 in accordance with a gate signal for turning ON the GTO3, the capacitor 10 is discharged, and is further charged in reverse polarity due to the existence of a wiring inductance 15. When the GTO3 is turned OFF in accordance with the gate signal for turning OFF the GTO3, the thyristor 11 is turned ON, and part of the current flowing through the GTO3 flows through the capacitor 10 and the thyristor 11. Since the capacitor 10 is charged in reverse polarity, the jumping voltage applied between the anode and the cathode of the GTO3 due to the wiring inductance 15 is added to the voltage charged in reverse polarity, with the result that the breakdown of the GTO can be prevented.
JP55159545A 1980-11-14 1980-11-14 Snubber circut for gate turn-off thyristor Pending JPS5785572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55159545A JPS5785572A (en) 1980-11-14 1980-11-14 Snubber circut for gate turn-off thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159545A JPS5785572A (en) 1980-11-14 1980-11-14 Snubber circut for gate turn-off thyristor

Publications (1)

Publication Number Publication Date
JPS5785572A true JPS5785572A (en) 1982-05-28

Family

ID=15696089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159545A Pending JPS5785572A (en) 1980-11-14 1980-11-14 Snubber circut for gate turn-off thyristor

Country Status (1)

Country Link
JP (1) JPS5785572A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04105590A (en) * 1990-08-24 1992-04-07 Shibaura Eng Works Co Ltd Ac voltage controller
US5260607A (en) * 1991-03-27 1993-11-09 Mitsubishi Denki K.K. Snubber circuit for power converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04105590A (en) * 1990-08-24 1992-04-07 Shibaura Eng Works Co Ltd Ac voltage controller
US5260607A (en) * 1991-03-27 1993-11-09 Mitsubishi Denki K.K. Snubber circuit for power converter

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