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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (3): 345-352    DOI: 10.1631/jzus.A0820224
Civil and Mechanical Engineering     
Flat-type permanent magnet linear alternator: A suitable device for a free piston linear alternator
Qing-feng LI, Jin XIAO, Zhen HUANG
MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract  We proposed the flat-type permanent magnet linear alternator (LA) for free piston linear alternators (FPLAs) instead of the tubular one. Using the finite element method (FEM), we compare these two kinds of LAs. The FEM result shows that the flat-type permanent magnet LA has higher efficiency and larger output specific power than the tubular one, therefore more suitable for FPLAs, and that the alternator design can be optimized with respect to the permanent magnet length as well as the air gap.

Key words： Free piston (FP)      Linear alternator (LA)      Internal combustion engine (ICE)      Finite element method (FEM)     
Received: 26 March 2008     
CLC:  TN929.5  
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Qing-feng LI
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Zhen HUANG
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Qing-feng LI, Jin XIAO, Zhen HUANG. Flat-type permanent magnet linear alternator: A suitable device for a free piston linear alternator. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(3): 345-352.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820224     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I3/345

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