JPS57116579A - Control system for semiconductor type ac switch - Google Patents

Control system for semiconductor type ac switch

Info

Publication number
JPS57116579A
JPS57116579A JP110981A JP110981A JPS57116579A JP S57116579 A JPS57116579 A JP S57116579A JP 110981 A JP110981 A JP 110981A JP 110981 A JP110981 A JP 110981A JP S57116579 A JPS57116579 A JP S57116579A
Authority
JP
Japan
Prior art keywords
switch
command
fed
gate pulse
control system
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
JP110981A
Other languages
Japanese (ja)
Inventor
Takao Miyamoto
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 JP110981A priority Critical patent/JPS57116579A/en
Publication of JPS57116579A publication Critical patent/JPS57116579A/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)

Abstract

PURPOSE:To prevent the rush current to an induction load by gradually raising an output voltage by controlling the ON operating phase of an AC switch after a throw instruction for closing the switch is produced. CONSTITUTION:A gate pulse is fed to a thyristor 121 at a point a upon production of the ON command of an AC switch 12. The contact B of a changeover switch 303 is closed under the conditions that the output voltage of the switch 12 is zero and the switch 12 is first thrown. When the ON command is fed in this state, the ON command is inputted through the contact B to an integrating circuit 304. The output from the circuit 304 is fed to a gate pulse generator 305, which in turn produces a gate pulse controlled in phase at the time b. Thus, it can prevent the rush current to an induction load such as a transformer or the like.
JP110981A 1981-01-09 1981-01-09 Control system for semiconductor type ac switch Pending JPS57116579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP110981A JPS57116579A (en) 1981-01-09 1981-01-09 Control system for semiconductor type ac switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP110981A JPS57116579A (en) 1981-01-09 1981-01-09 Control system for semiconductor type ac switch

Publications (1)

Publication Number Publication Date
JPS57116579A true JPS57116579A (en) 1982-07-20

Family

ID=11492296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP110981A Pending JPS57116579A (en) 1981-01-09 1981-01-09 Control system for semiconductor type ac switch

Country Status (1)

Country Link
JP (1) JPS57116579A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360362A (en) * 1989-07-21 1991-03-15 American Teleph & Telegr Co <Att> Electric power processing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360362A (en) * 1989-07-21 1991-03-15 American Teleph & Telegr Co <Att> Electric power processing circuit

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