用于电磁弹射的容错型初级永磁直线电机特性

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Abstract A novel double-sides primary permanent magnet linear motor (PPMLM) with fault-tolerant capability is proposed for electromagnetic launch. The proposed motor has advantage of simple secondary structure. Firstly, the structure and operation principle of the PPMLM are introduced. Secondly, two-dimensional(2-D) finite element method(FEM) is used to investigate the static electromagnetic characteristics. Basic on the static electromagnetic characteristics of the proposed PPMLM, the co-energy method is implemented to derive the thrust force equation. And the fault tolerance performance of the proposed PPMLM is analyzed. Additionally, the 2-D transient FEM is implemented to investigate the thrust force and fault tolerance performance. The thrust force performance under normal and open current fault are simulated and compared. And the process of electromagnetic launch is simulated. Lastly, an experimental prototype reduced scale representation is used to test the characteristics of the proposed PPMLM. The simulation results are validated by the ones of experiment. All results of simulation and experiment demonstrate that the proposed motor has advantage of high thrust density, minor thrust force ripple and simple control strategy. This kind PPMLM is well suitable for the application of electromagnetic launch.

Key words： Electromagnetic launch flux-switching permanent magnet linear motor finite element method thrust performance fault tolerance

Received: 25 January 2011 Published: 20 March 2014

PACS:

TM359.4

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	Articles by authors
	Huang Lei
	Yu Haitao
	Hu Minqiang
	Zhao Jing
	Zhou Shigui

Cite this article:

Huang Lei,Yu Haitao,Hu Minqiang等. Characteristics of a Primary Permanent Magnet Linear Machine With Fault-Tolerant Capability for Electromagnetic Launch[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 119-127.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/119

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