JPS5791679A - Protective circuit for power control element - Google Patents

Protective circuit for power control element

Info

Publication number
JPS5791679A
JPS5791679A JP55165518A JP16551880A JPS5791679A JP S5791679 A JPS5791679 A JP S5791679A JP 55165518 A JP55165518 A JP 55165518A JP 16551880 A JP16551880 A JP 16551880A JP S5791679 A JPS5791679 A JP S5791679A
Authority
JP
Japan
Prior art keywords
power control
turned
control element
state
transistor
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
JP55165518A
Other languages
Japanese (ja)
Inventor
Akira Yokoyama
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP55165518A priority Critical patent/JPS5791679A/en
Publication of JPS5791679A publication Critical patent/JPS5791679A/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
    • H02M7/53—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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To prevent flowing of a short-circuit current in a serially connected power control element by a method wherein an output current in a power control element is detected, and based on the detected result, an input signal of another power control element is interrupted. CONSTITUTION:When transistors S1, S6 are turned into ON state simultaneously because of fault in a control circuit or the like, a transistor Q1 is turned into ON state. By an action of a resistor R10 and a diode D10, a transistor C6 is turned into cut-off state, and consequently an output transistor Q6 is also turned into cut-off state. Accordingly output transistors Q1, Q6 are never turned into ON stat simultanously, and output transistors Q1, Q2 are prevented from breakdown.
JP55165518A 1980-11-25 1980-11-25 Protective circuit for power control element Pending JPS5791679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55165518A JPS5791679A (en) 1980-11-25 1980-11-25 Protective circuit for power control element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55165518A JPS5791679A (en) 1980-11-25 1980-11-25 Protective circuit for power control element

Publications (1)

Publication Number Publication Date
JPS5791679A true JPS5791679A (en) 1982-06-07

Family

ID=15813908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55165518A Pending JPS5791679A (en) 1980-11-25 1980-11-25 Protective circuit for power control element

Country Status (1)

Country Link
JP (1) JPS5791679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004575A1 (en) * 1986-01-27 1987-07-30 Toshiyasu Suzuki Power converter
JPS62296790A (en) * 1986-06-13 1987-12-24 Fujitsu Ltd Motor driving circuit
WO1988001804A1 (en) * 1986-08-25 1988-03-10 Toshiyasu Suzuki On-off detecting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004575A1 (en) * 1986-01-27 1987-07-30 Toshiyasu Suzuki Power converter
JPS62296790A (en) * 1986-06-13 1987-12-24 Fujitsu Ltd Motor driving circuit
WO1988001804A1 (en) * 1986-08-25 1988-03-10 Toshiyasu Suzuki On-off detecting circuit

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