JPH033614A - Arm short-circuit protective device - Google Patents

Arm short-circuit protective device

Info

Publication number
JPH033614A
JPH033614A JP13633189A JP13633189A JPH033614A JP H033614 A JPH033614 A JP H033614A JP 13633189 A JP13633189 A JP 13633189A JP 13633189 A JP13633189 A JP 13633189A JP H033614 A JPH033614 A JP H033614A
Authority
JP
Japan
Prior art keywords
circuit
short
rectifier element
controllable rectifier
capacitor
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
JP13633189A
Other languages
Japanese (ja)
Inventor
Noriaki Nakamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13633189A priority Critical patent/JPH033614A/en
Publication of JPH033614A publication Critical patent/JPH033614A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To discriminate whether the short circuit of an arm exists or not, without operating a switching circuit by applying checking ignition signal at the time of the non-operation of the switching circuit.
CONSTITUTION: By a protective circuit 11, with an external operation, short circuit checking ignition signal G0 is transmitted, and the output of an arm short-circuit detecting voltage detector 8 is monitored, and when this output comes to a set value, then short circuit detecting signal is generated. In a state that the operation of an inverter INV is stopped and the circuit of a line breaker 2 is opened, a capacitor 7 is charged. When the protective circuit 11 is externally operated and the checking ignition signal G0 is applied to the gate of the controllable rectifier element 6 of a U-phase arm, and when a controllable rectifier element 5 is in a normal state, then current is not discharged from the capacitor 7, but when any of the controllable rectifier element 5 is short-circuited, then the current is discharged from the capacitor 7, and voltage is lowered, and so an abnormal state can be detected. In the same manner, the abnormal state of the controllable rectifier element 6 can be also detected.
COPYRIGHT: (C)1991,JPO&Japio
JP13633189A 1989-05-30 1989-05-30 Arm short-circuit protective device Pending JPH033614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13633189A JPH033614A (en) 1989-05-30 1989-05-30 Arm short-circuit protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13633189A JPH033614A (en) 1989-05-30 1989-05-30 Arm short-circuit protective device

Publications (1)

Publication Number Publication Date
JPH033614A true JPH033614A (en) 1991-01-09

Family

ID=15172724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13633189A Pending JPH033614A (en) 1989-05-30 1989-05-30 Arm short-circuit protective device

Country Status (1)

Country Link
JP (1) JPH033614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004040921A (en) * 2002-07-04 2004-02-05 Meidensha Corp Control method for electric vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54148180A (en) * 1978-05-12 1979-11-20 Tomoegawa Paper Co Ltd Tubular membrane and its manufacture
JPS56148180A (en) * 1980-04-18 1981-11-17 High Frequency Heattreat Co Ltd Method of detecting fault of semiconductor element for electric power in frequency converter and device
JPS60261327A (en) * 1984-05-11 1985-12-24 Mitsubishi Electric Corp Method and device for detecting defect of thyristor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54148180A (en) * 1978-05-12 1979-11-20 Tomoegawa Paper Co Ltd Tubular membrane and its manufacture
JPS56148180A (en) * 1980-04-18 1981-11-17 High Frequency Heattreat Co Ltd Method of detecting fault of semiconductor element for electric power in frequency converter and device
JPS60261327A (en) * 1984-05-11 1985-12-24 Mitsubishi Electric Corp Method and device for detecting defect of thyristor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004040921A (en) * 2002-07-04 2004-02-05 Meidensha Corp Control method for electric vehicle

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