Unsymmetrical bistable multimagnetic circuit permanent magnet actuator for high‐voltage circuit breaker application: analysis, design, and dynamic simulation. Issue 5 (25th February 2020)

• Record Type: Journal Article
• Authors: Zeng, Guanbao; Xiangyu, Yang; Yin, Huajie; Jing, Yiyang; Zhao, Shiwei; Cao, Jianghua
• Is Part Of: IET electric power applications. Volume 14:Issue 5(2020)
• Page Start: 827
• Page End: 836
• Publication Date: 2020-02-25
• Subjects: magnetic circuits -- circuit breakers -- permanent magnets -- magnetic actuators -- finite element analysis; static characteristics -- dynamic characteristics -- numerical finite element analysis methods -- magnet volume -- high force density -- unsymmetrical bistable multimagnetic circuit permanent magnet actuator -- high‐voltage circuit breaker application -- dynamic simulation -- mathematical model -- static characteristics -- short starting time -- characteristic curve retrieval -- holding force; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2019.0559
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : In this study, an unsymmetrical bistable multi‐magnetic circuit permanent magnetic actuator is proposed. The operating principle and mathematical model of the high‐voltage circuit breaker with the proposed machine are analysed. Additionally, the static and dynamic characteristics of the high‐voltage circuit breaker with the presented machine are investigated and evaluated using numerical finite element analysis methods. Furthermore, the influence of the length of the middle gap and the additional coil in the proposed machine are studied. The advantages of the presented machine, such as less magnet volume, low cost, high force density, and short starting time, are discussed. Finally, a prototype is created and tested, followed by the retrieval of the characteristic curves of the holding force to confirm the proposed design.