JPS5466418A - Protective device for commutation failure in chopper device - Google Patents
Protective device for commutation failure in chopper deviceInfo
- Publication number
- JPS5466418A JPS5466418A JP13256077A JP13256077A JPS5466418A JP S5466418 A JPS5466418 A JP S5466418A JP 13256077 A JP13256077 A JP 13256077A JP 13256077 A JP13256077 A JP 13256077A JP S5466418 A JPS5466418 A JP S5466418A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- commutation failure
- main
- supplementary charge
- mcrf
- 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
Landscapes
- Stopping Of Electric Motors (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To prevent a damping resistance from thermal destruction at a time of commutation failure, by means of detecting an electric quantity, that flows into a supplementary charge circuit, to disconnect the main circuit.
CONSTITUTION: When a main thyristor MCRf causes a commutation failure due to a certain reason, a chopper resistor RCH comes to be in a state of short-circuit, and a condenser C will not be charged by the main circuit but by a supplementary charge circuit constituted by a transformer TR, diode bridge DB, and resistor RS. A comparator COM, when a current, flowing into the supplementary charge circuit, exceeds a set value K, will output signal that means a commutation failure in the main thyristor MCRf, to break a circuit breaker HB connected in series to the main circuit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13256077A JPS5466418A (en) | 1977-11-07 | 1977-11-07 | Protective device for commutation failure in chopper device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13256077A JPS5466418A (en) | 1977-11-07 | 1977-11-07 | Protective device for commutation failure in chopper device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5466418A true JPS5466418A (en) | 1979-05-29 |
Family
ID=15084140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13256077A Pending JPS5466418A (en) | 1977-11-07 | 1977-11-07 | Protective device for commutation failure in chopper device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466418A (en) |
-
1977
- 1977-11-07 JP JP13256077A patent/JPS5466418A/en active Pending
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