SU609168A1 - Frequency converter protection method - Google Patents
Frequency converter protection methodInfo
- Publication number
- SU609168A1 SU609168A1 SU762407164A SU2407164A SU609168A1 SU 609168 A1 SU609168 A1 SU 609168A1 SU 762407164 A SU762407164 A SU 762407164A SU 2407164 A SU2407164 A SU 2407164A SU 609168 A1 SU609168 A1 SU 609168A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- frequency converter
- protection method
- converter protection
- choke
- thyristor
- Prior art date
Links
Description
напр жени на фильтровом дросселе. Под действием ЭДС самоиндукции через дроссель от выпр мител продолжает протекать ток, зар жающий фильтровой конденсатор 9. Когда напр жение на этом конденсаторе превысит выходное напр жение выпр мител на величину, равную порогу отпирани стабилитрона 17, по вл етс ток в цепи управлени тиристора 13, и он открываетс , предотвраща дальнейший зар д конденсатора 9. При коротком замыкании выпр мител через вентили 4, 7 или 6, 5 ток короткого замыкани ограничиваетс дросселем фильтра 8, пока не закроютс вентили выпр мител .voltage across the filter choke. Under the action of self-induction EMF, a current flowing through the filter capacitor 9 continues to flow through the inductor from the rectifier. When the voltage across this capacitor exceeds the output voltage of the rectifier by an amount equal to the unlocking threshold of the Zener diode 17, and it opens, preventing further charging of the capacitor 9. In the event of a short circuit of the rectifier through the valves 4, 7 or 6, 5, the short circuit current is limited by the filter choke 8 until the valves of the rectifier are closed.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762407164A SU609168A1 (en) | 1976-09-27 | 1976-09-27 | Frequency converter protection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762407164A SU609168A1 (en) | 1976-09-27 | 1976-09-27 | Frequency converter protection method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU609168A1 true SU609168A1 (en) | 1978-05-30 |
Family
ID=20677978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762407164A SU609168A1 (en) | 1976-09-27 | 1976-09-27 | Frequency converter protection method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU609168A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104167710B (en) * | 2014-08-07 | 2017-11-10 | 石狮市酷瑞电气有限责任公司 | A kind of short-circuit protection circuit of frequency changer direct current bus |
-
1976
- 1976-09-27 SU SU762407164A patent/SU609168A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104167710B (en) * | 2014-08-07 | 2017-11-10 | 石狮市酷瑞电气有限责任公司 | A kind of short-circuit protection circuit of frequency changer direct current bus |
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