JPS56157292A - Protecting circuit for commutation failure - Google Patents

Protecting circuit for commutation failure

Info

Publication number
JPS56157292A
JPS56157292A JP5872880A JP5872880A JPS56157292A JP S56157292 A JPS56157292 A JP S56157292A JP 5872880 A JP5872880 A JP 5872880A JP 5872880 A JP5872880 A JP 5872880A JP S56157292 A JPS56157292 A JP S56157292A
Authority
JP
Japan
Prior art keywords
chopper
output
signal
commutation failure
circuit
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
JP5872880A
Other languages
English (en)
Inventor
Hirohisa Yamamura
Shotaro Naito
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 JP5872880A priority Critical patent/JPS56157292A/ja
Publication of JPS56157292A publication Critical patent/JPS56157292A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
JP5872880A 1980-05-06 1980-05-06 Protecting circuit for commutation failure Pending JPS56157292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5872880A JPS56157292A (en) 1980-05-06 1980-05-06 Protecting circuit for commutation failure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5872880A JPS56157292A (en) 1980-05-06 1980-05-06 Protecting circuit for commutation failure

Publications (1)

Publication Number Publication Date
JPS56157292A true JPS56157292A (en) 1981-12-04

Family

ID=13092556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5872880A Pending JPS56157292A (en) 1980-05-06 1980-05-06 Protecting circuit for commutation failure

Country Status (1)

Country Link
JP (1) JPS56157292A (ja)

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