JPS56148180A - Method of detecting fault of semiconductor element for electric power in frequency converter and device - Google Patents

Method of detecting fault of semiconductor element for electric power in frequency converter and device

Info

Publication number
JPS56148180A
JPS56148180A JP5033780A JP5033780A JPS56148180A JP S56148180 A JPS56148180 A JP S56148180A JP 5033780 A JP5033780 A JP 5033780A JP 5033780 A JP5033780 A JP 5033780A JP S56148180 A JPS56148180 A JP S56148180A
Authority
JP
Japan
Prior art keywords
faulted
opened
closed
elements
contacts
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.)
Granted
Application number
JP5033780A
Other languages
Japanese (ja)
Other versions
JPS6210106B2 (en
Inventor
Yutaka Komatsu
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.)
Neturen Co Ltd
Koshuha Netsuren KK
Original Assignee
Neturen Co Ltd
Koshuha Netsuren KK
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 Neturen Co Ltd, Koshuha Netsuren KK filed Critical Neturen Co Ltd
Priority to JP5033780A priority Critical patent/JPS56148180A/en
Publication of JPS56148180A publication Critical patent/JPS56148180A/en
Publication of JPS6210106B2 publication Critical patent/JPS6210106B2/ja
Granted 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Ac-Ac Conversion (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To easily detect faulty elements by a method wherein a detection current is flowed from a fault detecting source to a main circuit to detect a short-circuit current flowing in the faulted elements. CONSTITUTION:A switch SW1 of a main power source E0 is opened and a switch SW2 of the fault detecting source E1 is closed. In this condition, when contacts (b), (d) are opened and a contact (c) is closed, the detection current does not flow if the elements SCR7, SCR8 are normal, and accordingly, no voltage is induced between detection terminals a21, a23. If the both elements or either of them are faulted, there can be detected which elements is the faulted element by measuring the induced voltages between the detection terminals a21, a22 and between a22, a23. Thereby, after the upper half circuit on the load L side is inspected, the contacts (b), (c) are opened and the contact (d) is closed to enable the faulted element of the lower half circuit to be detected. Then, the contacts (b), (c) are closed and the contact (d) is opened to enable the faulted element of the upper half circuit on the power source E0 side to be detected, and the contacts (b), (c) are closed and the contact (c) is opened to enable the faulted element of the lower half circuit to be detected.
JP5033780A 1980-04-18 1980-04-18 Method of detecting fault of semiconductor element for electric power in frequency converter and device Granted JPS56148180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5033780A JPS56148180A (en) 1980-04-18 1980-04-18 Method of detecting fault of semiconductor element for electric power in frequency converter and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5033780A JPS56148180A (en) 1980-04-18 1980-04-18 Method of detecting fault of semiconductor element for electric power in frequency converter and device

Publications (2)

Publication Number Publication Date
JPS56148180A true JPS56148180A (en) 1981-11-17
JPS6210106B2 JPS6210106B2 (en) 1987-03-04

Family

ID=12856098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5033780A Granted JPS56148180A (en) 1980-04-18 1980-04-18 Method of detecting fault of semiconductor element for electric power in frequency converter and device

Country Status (1)

Country Link
JP (1) JPS56148180A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH033614A (en) * 1989-05-30 1991-01-09 Mitsubishi Electric Corp Arm short-circuit protective device
US4992718A (en) * 1989-09-11 1991-02-12 Nihon Patent Electric Co., Ltd. Electric floor cleaner with a soft start function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH033614A (en) * 1989-05-30 1991-01-09 Mitsubishi Electric Corp Arm short-circuit protective device
US4992718A (en) * 1989-09-11 1991-02-12 Nihon Patent Electric Co., Ltd. Electric floor cleaner with a soft start function

Also Published As

Publication number Publication date
JPS6210106B2 (en) 1987-03-04

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