JPS6439228A - Arm short-circuit detector - Google Patents

Arm short-circuit detector

Info

Publication number
JPS6439228A
JPS6439228A JP62192615A JP19261587A JPS6439228A JP S6439228 A JPS6439228 A JP S6439228A JP 62192615 A JP62192615 A JP 62192615A JP 19261587 A JP19261587 A JP 19261587A JP S6439228 A JPS6439228 A JP S6439228A
Authority
JP
Japan
Prior art keywords
current
bus line
side bus
ict
transformer
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
JP62192615A
Other languages
Japanese (ja)
Other versions
JP2563806B2 (en
Inventor
Hiroyuki Masuda
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 JP62192615A priority Critical patent/JP2563806B2/en
Publication of JPS6439228A publication Critical patent/JPS6439228A/en
Application granted granted Critical
Publication of JP2563806B2 publication Critical patent/JP2563806B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Power Conversion In General (AREA)
  • Inverter Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

PURPOSE:To form the device of high performance at a low cost, by detecting arm short-circuit, with a DC current-transformer for penetrating a positive side bus line and a negative side bus line in the directions opposite to each other. CONSTITUTION:The DC input of respective arms is turned ON/OFF by GTO thyristors 2, 3, and is fed to a load. Through a DC current-transformer 10, a positive side bus line L1 and a negative side bus line L2 are penetrated in the directions opposite to each other. Then, arm short-circuit current (IS) flowing from a chemical capacitor 1 is conducted through the primary winding of the DC currenttransformer 10 in the same direction. Accordingly, so far as the detection current (ICT) of the DC current-transformer 10 is concerned, when load current is set to be IL, then ICT=2XIS+ or -IL is set, and even if current is in the counter direction, when IS>=IL is set, then ICT>=IS is set, and the short- circuit current can be detected.
JP62192615A 1987-08-03 1987-08-03 Arm short circuit detector Expired - Fee Related JP2563806B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62192615A JP2563806B2 (en) 1987-08-03 1987-08-03 Arm short circuit detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192615A JP2563806B2 (en) 1987-08-03 1987-08-03 Arm short circuit detector

Publications (2)

Publication Number Publication Date
JPS6439228A true JPS6439228A (en) 1989-02-09
JP2563806B2 JP2563806B2 (en) 1996-12-18

Family

ID=16294206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192615A Expired - Fee Related JP2563806B2 (en) 1987-08-03 1987-08-03 Arm short circuit detector

Country Status (1)

Country Link
JP (1) JP2563806B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007184999A (en) * 2005-12-29 2007-07-19 Toshiba Mitsubishi-Electric Industrial System Corp Power converter
JP2007202299A (en) * 2006-01-26 2007-08-09 Toshiba Mitsubishi-Electric Industrial System Corp Power converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149776A (en) * 1983-01-28 1984-08-27 Toshiba Corp Ground protecting device for power converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149776A (en) * 1983-01-28 1984-08-27 Toshiba Corp Ground protecting device for power converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007184999A (en) * 2005-12-29 2007-07-19 Toshiba Mitsubishi-Electric Industrial System Corp Power converter
JP2007202299A (en) * 2006-01-26 2007-08-09 Toshiba Mitsubishi-Electric Industrial System Corp Power converter

Also Published As

Publication number Publication date
JP2563806B2 (en) 1996-12-18

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees