Abstract
The high power DC thyristor switch is one of key equipments of the poloidal field power supply system in EAST super-conductive TOKAMAK. This paper investigates the optimal design of DC thyristor switch, including that of main circuit of thyristor DC switch, main thyristor and diode parameter, snubber circuit, protection circuit, parameters setting of forced commutation circuit, and circuit and design of charger and so on. All factors that affect operational reliability of thyristor DC switch from four aspects of turn-on, turn-off, on-state, and off-state reliability are analyzed. Some measures are proposed to improve operational reliability of DC thyristor switch. The experiment results are presented in the paper.
| Original language | English |
|---|---|
| Pages (from-to) | 55-58+86 |
| Journal | Dianli Xitong Zidonghua/Automation of Electric Power Systems |
| Volume | 30 |
| Issue number | 5 |
| State | Published - 10 Mar 2006 |
Keywords
- Forced commutation
- Operational reliability
- Optimization design
- Thyristor DC switch
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