双边长初级磁通切换永磁直线电机推力波动分析及抑制

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Abstract On the basis of the principle of rotation flux-switching permanent magnet motor and the characteristic of electromagnetic launch,a double-sided long primary flux-switching permanent magnet linear motor(DSLP-FSPMLM) is proposed for electromagnetic launch application. The proposed linear machine has advantages of high thrust density,simple structure and small mass of the mover. Firstly,the topological structure and operation principle of the proposed are analyzed. And the thrust components are derived. Secondly,the reasons caused the thrust ripple under normal and fault-tolerant control operations are pointed and analyzed. According to the generation mechanisms of the thrust ripple,the methods by using wedge-shaped end-sides,inductance complementary winding,harmonic current injection and pole alignments are implemented to suppress the fluctuations caused by cogging force,reluctance force and harmonic component of the permanent magnet flux on fault-tolerant control operation. The two-dimensional transient finite element method is employed to calculate the thrusts of the optimized ones. Lastly,a double-sided long secondary flux-switching permanent magnet linear motor is used to verify the correctness of the results obtained by finite element analysis and the effectiveness of the proposed thrust ripple suppression method.

Key words： Long primary linear motor flux-switching permanent magnet finite element method thrust ripple suppression

Received: 07 June 2013 Published: 22 January 2015

PACS:

TM359.4

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	Huang Lei
	Hu Minqiang
	Liu Jing
	Yu Haitao
	Liu Qiang

Cite this article:

Huang Lei,Hu Minqiang,Liu Jing等. Analysis and Suppression of the Thrust Ripple in a Double-Sided Long Primary Flux-Switching Permanent Magnet Linear Motor[J]. Transactions of China Electrotechnical Society, 2014, 29(11): 10-19.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I11/10

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