JPS57162964A - Protecting device for gate turn-off thyristor - Google Patents

Protecting device for gate turn-off thyristor

Info

Publication number
JPS57162964A
JPS57162964A JP4618781A JP4618781A JPS57162964A JP S57162964 A JPS57162964 A JP S57162964A JP 4618781 A JP4618781 A JP 4618781A JP 4618781 A JP4618781 A JP 4618781A JP S57162964 A JPS57162964 A JP S57162964A
Authority
JP
Japan
Prior art keywords
gto
thyristors
thyristor
gate turn
gate
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
JP4618781A
Other languages
Japanese (ja)
Inventor
Keiichiro Yanagida
Ikuo Yasuoka
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 JP4618781A priority Critical patent/JPS57162964A/en
Publication of JPS57162964A publication Critical patent/JPS57162964A/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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/505—Conversion of dc power input into ac 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
    • H02M7/515—Conversion of dc power input into ac 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
    • H02M7/5152—Conversion of dc power input into ac 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 with separate extinguishing means

Landscapes

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

Abstract

PURPOSE:To prevent the delay in the protecting operation of a gate turn-OFF thyristor (GTO) by providing an AND circuit for inhibiting an OFF gate signal to the GTO. CONSTITUTION:When GTO thyristors 6a, 6b are simultaneously fired, a shortcircuit current flows from a power source 1, and a current simultaneously flows through current detectors 10a, 10b, thereby facilitating the simultaneous firing of the thyristors 6a, 6b of respective upper and lower arms 12a, 12b. Since the arms 12a, 12b are not absolutely simultaneously fired at the normal control time, the protection can be effectively performed. Accordingly, when its state is detected to inhibit the OFF gate signals of the GTO thyristors 6a, 6b, the thyristors can be protected without time delay.
JP4618781A 1981-03-31 1981-03-31 Protecting device for gate turn-off thyristor Pending JPS57162964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4618781A JPS57162964A (en) 1981-03-31 1981-03-31 Protecting device for gate turn-off thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4618781A JPS57162964A (en) 1981-03-31 1981-03-31 Protecting device for gate turn-off thyristor

Publications (1)

Publication Number Publication Date
JPS57162964A true JPS57162964A (en) 1982-10-06

Family

ID=12740036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4618781A Pending JPS57162964A (en) 1981-03-31 1981-03-31 Protecting device for gate turn-off thyristor

Country Status (1)

Country Link
JP (1) JPS57162964A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130969A (en) * 1984-07-23 1986-02-13 Hitachi Ltd Inverter device
WO1992005636A1 (en) * 1990-09-18 1992-04-02 General Electric Company Gate turnoff thyristor control circuit with shorted gate detection
US5262691A (en) * 1990-09-18 1993-11-16 General Electric Company Gate turnoff thyristor control circuit with shorted gate detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130969A (en) * 1984-07-23 1986-02-13 Hitachi Ltd Inverter device
WO1992005636A1 (en) * 1990-09-18 1992-04-02 General Electric Company Gate turnoff thyristor control circuit with shorted gate detection
US5262691A (en) * 1990-09-18 1993-11-16 General Electric Company Gate turnoff thyristor control circuit with shorted gate detection

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