TY - GEN
T1 - Analysis of structure strength in medium voltage DC system high speed repulsing mechanism
AU - Wu, Junhui
AU - Guo, Jiahao
AU - Wu, Yifei
AU - Wu, Yi
AU - Han, Guiquan
AU - Wang, DIe
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/12
Y1 - 2017/12/12
N2 - High speed repulsion mechanism is the key component of Hybrid DC circuit breaker, whose properties and reliability directly determine whether the fault short-circuit current can be quickly broken off. The driving force, produced by the eddy current effect, reach tens of kilo Newton in 100μs, which means the huge impact on motion component. Due to its characteristics, it is necessary to check the strength of the stressed components and optimize the structure of the mechanism. The traditional static stress solution method does not take into account the influence of the acceleration and inertia force of the motion components, while they have crucial affects on stress distribution. In this paper, based on flexible body dynamics, three-dimensional finite element model is established. The dynamic stress distribution of each component is solved under the given driving circuit parameters, and an improved structural scheme is proposed according to the simulation result. Finally, an experimental prototype is built, and the life test results of the repulsion mechanism validate the simulation results.
AB - High speed repulsion mechanism is the key component of Hybrid DC circuit breaker, whose properties and reliability directly determine whether the fault short-circuit current can be quickly broken off. The driving force, produced by the eddy current effect, reach tens of kilo Newton in 100μs, which means the huge impact on motion component. Due to its characteristics, it is necessary to check the strength of the stressed components and optimize the structure of the mechanism. The traditional static stress solution method does not take into account the influence of the acceleration and inertia force of the motion components, while they have crucial affects on stress distribution. In this paper, based on flexible body dynamics, three-dimensional finite element model is established. The dynamic stress distribution of each component is solved under the given driving circuit parameters, and an improved structural scheme is proposed according to the simulation result. Finally, an experimental prototype is built, and the life test results of the repulsion mechanism validate the simulation results.
KW - Flexible body dynamics
KW - High speed repulsion mechanism
KW - Prototype experiment
KW - Structural strength
UR - https://www.scopus.com/pages/publications/85046906549
U2 - 10.1109/ICEPE-ST.2017.8188871
DO - 10.1109/ICEPE-ST.2017.8188871
M3 - 会议稿件
AN - SCOPUS:85046906549
T3 - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
SP - 435
EP - 440
BT - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Conference on Electric Power Equipment- Switching Technology, ICEPE-ST 2017
Y2 - 22 October 2017 through 25 October 2017
ER -