JPS56159965A - Overvoltage protecting circuit of thyristor - Google Patents

Overvoltage protecting circuit of thyristor

Info

Publication number
JPS56159965A
JPS56159965A JP6339580A JP6339580A JPS56159965A JP S56159965 A JPS56159965 A JP S56159965A JP 6339580 A JP6339580 A JP 6339580A JP 6339580 A JP6339580 A JP 6339580A JP S56159965 A JPS56159965 A JP S56159965A
Authority
JP
Japan
Prior art keywords
circuit
thyristors
diode
overvoltage
gates
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
JP6339580A
Other languages
Japanese (ja)
Inventor
Shigeo Konishi
Osamu Motoyoshi
Hirotaka Shiraishi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6339580A priority Critical patent/JPS56159965A/en
Publication of JPS56159965A publication Critical patent/JPS56159965A/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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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)
  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To protect a thyristor against an overvoltage by a single overvoltage protecting circuit by connecting a series circuit of a breakover diode and a current limiting resistor through a diode bridge circuit between the gates of the thyristors connected in parallel with each other. CONSTITUTION:A series circuit of a breakover diode 3' and a current limiting resistor 4 is connected between one diagonal connection points of a diode bridge circuit 5, and the gates of two thyristors 1, 2 connected in antiparallel are connected to the other diagonal connection points of the circuit 5. Further, a reverse voltage stopping diode 6 is connected between the gates and the anodes of the thyristors 1, 2. Thus, the overvoltage against a pair of thyristors connected in antiparallel can be protected commonly by a single protecting circuit.
JP6339580A 1980-05-15 1980-05-15 Overvoltage protecting circuit of thyristor Pending JPS56159965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6339580A JPS56159965A (en) 1980-05-15 1980-05-15 Overvoltage protecting circuit of thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6339580A JPS56159965A (en) 1980-05-15 1980-05-15 Overvoltage protecting circuit of thyristor

Publications (1)

Publication Number Publication Date
JPS56159965A true JPS56159965A (en) 1981-12-09

Family

ID=13228069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6339580A Pending JPS56159965A (en) 1980-05-15 1980-05-15 Overvoltage protecting circuit of thyristor

Country Status (1)

Country Link
JP (1) JPS56159965A (en)

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