Flat-type permanent magnet linear alternator:A suitable device for a free piston linear alternator  

作　　者：Qing-feng LI Jin XIAO Zhen HUANG 

机构地区：[1]MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2009年第3期345-352,共8页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No. 50806046) supported by the National Natural Science Foundation of China

摘　　要：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.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.

关 键 词：Free piston （FP） Linear alternator （LA） Internal combustion engine （ICE） Finite element method （FEM） 

分 类 号：TK4[动力工程及工程热物理—动力机械及工程] TM31[电气工程—电机]