JPS5466418A - Protective device for commutation failure in chopper device - Google Patents

Protective device for commutation failure in chopper device

Info

Publication number
JPS5466418A
JPS5466418A JP13256077A JP13256077A JPS5466418A JP S5466418 A JPS5466418 A JP S5466418A JP 13256077 A JP13256077 A JP 13256077A JP 13256077 A JP13256077 A JP 13256077A JP S5466418 A JPS5466418 A JP S5466418A
Authority
JP
Japan
Prior art keywords
circuit
commutation failure
main
supplementary charge
mcrf
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
JP13256077A
Other languages
Japanese (ja)
Inventor
Akira Kato
Takeshi Koga
Takamasa Kanzaki
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 JP13256077A priority Critical patent/JPS5466418A/en
Publication of JPS5466418A publication Critical patent/JPS5466418A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stopping Of Electric Motors (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To prevent a damping resistance from thermal destruction at a time of commutation failure, by means of detecting an electric quantity, that flows into a supplementary charge circuit, to disconnect the main circuit.
CONSTITUTION: When a main thyristor MCRf causes a commutation failure due to a certain reason, a chopper resistor RCH comes to be in a state of short-circuit, and a condenser C will not be charged by the main circuit but by a supplementary charge circuit constituted by a transformer TR, diode bridge DB, and resistor RS. A comparator COM, when a current, flowing into the supplementary charge circuit, exceeds a set value K, will output signal that means a commutation failure in the main thyristor MCRf, to break a circuit breaker HB connected in series to the main circuit.
COPYRIGHT: (C)1979,JPO&Japio
JP13256077A 1977-11-07 1977-11-07 Protective device for commutation failure in chopper device Pending JPS5466418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13256077A JPS5466418A (en) 1977-11-07 1977-11-07 Protective device for commutation failure in chopper device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13256077A JPS5466418A (en) 1977-11-07 1977-11-07 Protective device for commutation failure in chopper device

Publications (1)

Publication Number Publication Date
JPS5466418A true JPS5466418A (en) 1979-05-29

Family

ID=15084140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13256077A Pending JPS5466418A (en) 1977-11-07 1977-11-07 Protective device for commutation failure in chopper device

Country Status (1)

Country Link
JP (1) JPS5466418A (en)

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