JPH04331464A - Converter - Google Patents

Converter

Info

Publication number
JPH04331464A
JPH04331464A JP3099999A JP9999991A JPH04331464A JP H04331464 A JPH04331464 A JP H04331464A JP 3099999 A JP3099999 A JP 3099999A JP 9999991 A JP9999991 A JP 9999991A JP H04331464 A JPH04331464 A JP H04331464A
Authority
JP
Japan
Prior art keywords
overvoltage
filter capacitor
circuit
short
produce
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
JP3099999A
Other languages
Japanese (ja)
Inventor
Katsunori Naganuma
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP3099999A priority Critical patent/JPH04331464A/en
Publication of JPH04331464A publication Critical patent/JPH04331464A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect short circuit fault positively by making a decision of short circuit fault only when overvoltage of one filter capacitor and undervoltage of the other filter capacitor are detected concurrently.
CONSTITUTION: If neither of GTO thyristors 13, 14 is short-circuited, both overvoltage detecting circuits 21, 23 produce outputs when a DC power supply 1 produces an overvoltage but since undervoltage detecting circuits 22, 24 produce no output, an OR circuit 27 does not produce an output. Upon short circuit fault of the GTO thyristor 13, a filter capacitor 7 is charged upto the voltage of the DC power supply but the voltage of a filter capacitor 6 is zero because it is short-circuited through a transformer 12 and the GTO thyristor 13. Consequently, the undervoltage detection circuit 22 and the overvoltage detection circuit 23 produce outputs and thereby the OR circuit 27 produces a fault detection signal 28.
COPYRIGHT: (C)1992,JPO&Japio
JP3099999A 1991-05-01 1991-05-01 Converter Pending JPH04331464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3099999A JPH04331464A (en) 1991-05-01 1991-05-01 Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3099999A JPH04331464A (en) 1991-05-01 1991-05-01 Converter

Publications (1)

Publication Number Publication Date
JPH04331464A true JPH04331464A (en) 1992-11-19

Family

ID=14262307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3099999A Pending JPH04331464A (en) 1991-05-01 1991-05-01 Converter

Country Status (1)

Country Link
JP (1) JPH04331464A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018033217A (en) * 2016-08-24 2018-03-01 オムロンオートモーティブエレクトロニクス株式会社 Voltage converter
JP2018033218A (en) * 2016-08-24 2018-03-01 オムロンオートモーティブエレクトロニクス株式会社 Voltage converter
WO2020105080A1 (en) * 2018-11-19 2020-05-28 三菱電機株式会社 Power conversion device and disconnection detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018033217A (en) * 2016-08-24 2018-03-01 オムロンオートモーティブエレクトロニクス株式会社 Voltage converter
JP2018033218A (en) * 2016-08-24 2018-03-01 オムロンオートモーティブエレクトロニクス株式会社 Voltage converter
WO2020105080A1 (en) * 2018-11-19 2020-05-28 三菱電機株式会社 Power conversion device and disconnection detection method

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