JPS576571A - Protection for inverter device - Google Patents
Protection for inverter deviceInfo
- Publication number
- JPS576571A JPS576571A JP7865180A JP7865180A JPS576571A JP S576571 A JPS576571 A JP S576571A JP 7865180 A JP7865180 A JP 7865180A JP 7865180 A JP7865180 A JP 7865180A JP S576571 A JPS576571 A JP S576571A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- gto
- short
- overcurrent
- inverting section
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE:To protect a gate turnoff thyristor (GTO) from an overcurrent by a method wherein an overcurrent protecting thyristor is turned on by a DC reactor and an overcurrent detection, and a power inverting section is turned off. CONSTITUTION:When a short-circuit is generated at the power inverting section 2, this short-circuit current is suppressed by the DC reactor 20a, the short-circuit current is also detectd by an overcurrent detecting circuit 4, a circuit breaker 19 is broken by the operation of a controlling circuit 5 and an overcurrent protecting circuit 7, and at the same time, the short-circuit current is branched off by the turn on of overcurrent protecting thyristor 13 and the flowing in of the short-circuit current to the GTO on the power inverting section 2 is reduced. Besides, a gate turnoff signal is supplied to all the GTO's on the power inverting section 2 by the controlling circuit 5 and the power inverting section 2 is turned off. Thus, the GTO's are protected safely and securely and the miniaturized and light-weighted GTO invertor device can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7865180A JPS576571A (en) | 1980-06-10 | 1980-06-10 | Protection for inverter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7865180A JPS576571A (en) | 1980-06-10 | 1980-06-10 | Protection for inverter device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS576571A true JPS576571A (en) | 1982-01-13 |
Family
ID=13667757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7865180A Pending JPS576571A (en) | 1980-06-10 | 1980-06-10 | Protection for inverter device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS576571A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58141683A (en) * | 1982-02-16 | 1983-08-23 | Toshiba Corp | Dc/ac power converter |
-
1980
- 1980-06-10 JP JP7865180A patent/JPS576571A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58141683A (en) * | 1982-02-16 | 1983-08-23 | Toshiba Corp | Dc/ac power converter |
JPH0324152B2 (en) * | 1982-02-16 | 1991-04-02 | Tokyo Shibaura Electric Co |
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