Development of a high-speed electromagnetic repulsion mechanism for high-voltage vacuum circuit breakers

Autor: Toshie Takeuchi, Hajimu Yoshiyasu, Mitsuru Tsukima, Kenichi Koyama
Rok vydání: 2008
Předmět:
Zdroj: Electrical Engineering in Japan. 163:34-40
ISSN: 1520-6416
0424-7760
DOI: 10.1002/eej.20398
Popis: This paper presents a design and testing of a new high-speed electromagnetic driving mechanism for a high-voltage vacuum circuit breaker (VCB). This mechanism is based on a high-speed electromagnetic repulsion and a permanent magnet spring (PMS). This PMS is introduced instead of the conventional disk spring due to its low spring energy and more suitable force characteristics for VCB application. The PMS has been optimally designed by the 3D nonlinear finite-elements magnetic field analysis and investigated its internal friction and eddy-current effect. Furthermore, we calculated the dynamic of this mechanism coupling with the electromagnetic field and circuit analysis, in order to satisfy the operating characteristics—contact velocity, response time, and so on, required for the high-speed VCB. A prototype VCB, which was built based on the above analysis, shows sufficient operating performance. Finally, the short circuit interruption tests were carried out with this prototype breaker, and we have been able to verify its satisfying performance. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 163(1): 34–40, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20398
Databáze: OpenAIRE
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