JPS6439228A - Arm short-circuit detector - Google Patents
Arm short-circuit detectorInfo
- 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
Links
Landscapes
- Protection Of Static Devices (AREA)
- Power Conversion In General (AREA)
- Inverter 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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149776A (en) * | 1983-01-28 | 1984-08-27 | Toshiba Corp | Ground protecting device for power converter |
-
1987
- 1987-08-03 JP JP62192615A patent/JP2563806B2/en not_active Expired - Fee Related
Patent Citations (1)
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)
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 |