TY - GEN
T1 - Design and reliability analysis of high power DC thyristor breaker
AU - Wen, J. L.
AU - Fu, P.
AU - Tang, G. F.
AU - Liu, Z. Z.
PY - 2006
Y1 - 2006
N2 - As a new type of circuit interrupter, DC thyristor breaker is very suit for high power DC system, such as subway, poloidal field power supply system of TOKAMAK (nuclear fusion experiment device), in which the transfer principle and force commutation technology was applied. In this paper, firstly, design of high power DC thyristor breaker has been finished, including main circuit design, snubber circuit design, commutation circuit optimize design, charger circuit design. Secondly, the reliability analysis of high power DC thyristor breaker has been presented, such as turn-off reliability analysis, turn-on reliability analysis, on-state and off-state reliability analysis. In these design and reliability analysis, some important conclusion have been derived, especially such as optimize design formulation of commutation circuit, the influences of distribution resistance in commutated circuit, the influence of stray inductance and their dispersivity in parallel connection thyristor branches for turn-off reliability, the influences of snubber circuit design for turn-on reliability, onstate and off-state reliability and so on. At last, we finished development and experiment of a bi-directional DC thyristor breaker for the poloidal field power supply system in EAST Super-conductive TOKAMAK Experiment result validated the correctness of the work above.
AB - As a new type of circuit interrupter, DC thyristor breaker is very suit for high power DC system, such as subway, poloidal field power supply system of TOKAMAK (nuclear fusion experiment device), in which the transfer principle and force commutation technology was applied. In this paper, firstly, design of high power DC thyristor breaker has been finished, including main circuit design, snubber circuit design, commutation circuit optimize design, charger circuit design. Secondly, the reliability analysis of high power DC thyristor breaker has been presented, such as turn-off reliability analysis, turn-on reliability analysis, on-state and off-state reliability analysis. In these design and reliability analysis, some important conclusion have been derived, especially such as optimize design formulation of commutation circuit, the influences of distribution resistance in commutated circuit, the influence of stray inductance and their dispersivity in parallel connection thyristor branches for turn-off reliability, the influences of snubber circuit design for turn-on reliability, onstate and off-state reliability and so on. At last, we finished development and experiment of a bi-directional DC thyristor breaker for the poloidal field power supply system in EAST Super-conductive TOKAMAK Experiment result validated the correctness of the work above.
KW - Commutation circuits
KW - DC thyristor breaker
KW - Force commutation technology
KW - Parameters optimize
KW - Reliability analysis
KW - Transfer principle
UR - https://www.scopus.com/pages/publications/43549116823
U2 - 10.1109/ICPST.2006.321810
DO - 10.1109/ICPST.2006.321810
M3 - 会议稿件
AN - SCOPUS:43549116823
SN - 1424401119
SN - 9781424401116
T3 - 2006 International Conference on Power System Technology, POWERCON2006
BT - 2006 International Conference on Power System Technology, POWERCON2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 International Conference on Power System Technology, POWERCON2006
Y2 - 22 October 2006 through 26 October 2006
ER -