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access icon free Comparative studies on two electromagnetic repulsion mechanisms for high-speed vacuum switch

  • Author(s): Mingzhi Zhang 1 ; Yi Wang 1 ; Peng Li 2 ; Huabin Wen 1
    • View affiliations
  • Source: Volume 12, Issue 2, February 2018, p. 247 – 253
    DOI:  10.1049/iet-epa.2017.0396 , Print ISSN 1751-8660, Online ISSN 1751-8679
© The Institution of Engineering and Technology
Received 12/07/2017, Accepted 04/10/2017, Revised 19/09/2017, Published 12/10/2017

The electromagnetic repulsion mechanism (ERM) is highly consistent with the operation mechanisms of the high-speed switch (HSS) owing to its simple structure and fast response capability. To investigate the performance difference between the coil–disk ERM and the coil–coil ERM, the authors adopt the finite element models for simulations with the aid of ANSYS Maxwell software. Then, an HSS prototype based on the mechanism of permanent magnet closing and repulsion force opening is developed to verify the numerical simulations. Simulations and experiments demonstrate that under the same excitation conditions, the coil–disk ERM has shorter inherent open time, while the coil–coil ERM has shorter full stroke time. Moreover, it is shown that the difference between the full stroke times of the two mechanisms gradually decreases with the increasing discharging energy.

Inspec keywords: finite element analysis; vacuum switches; permanent magnets

Other keywords: numerical simulations; repulsion force opening; ANSYS Maxwell software; permanent magnet closing; coil-coil ERM; high-speed vacuum switch; discharging energy; coil-disk ERM; finite element models; electromagnetic repulsion mechanisms

Subjects: Finite element analysis; Switchgear

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