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中文摘要：
用有限元软件和电磁场知识对1．2MW永磁风力发电机建模，计算了发电机的静、瞬态磁场。研究了发电机静态气隙磁场的分布，通过傅里叶分解，得出了气隙磁密基波和高次谐波。采用转予斜极方法消除高次谐波，得到了转子斜极改善磁密分布的实际效果。对于瞬态磁场，采用电路分析方法，根据有限元方法的电路耦合功能，得出了发电机磁场和电势波形。结合实验数据，对比了静、瞬态磁场计算结果，分析了数据产生偏差的原因，验证了理论分析的正确性和有效性。
英文摘要：
By use of finite element method （FEM） software and based on electromagnetic field theory, the modeling of permanent magnet synchronous wind power generator whose capacity is 1.2MW is carried out. The static and transient magnet fields of the generator are calculated. The distribution of static air gap magnetic field of the generator is researched and by means of Fourier decomposition the fundamental harmonic and high-order harmonic in the air gap are solved. The high-order harmonics are elicited by rotor-skewing, thus the practical effect of improving magnetic density by rotor- skewing is realized. For transient magnetic field, by use of circuit analysis method, according to the circuit coupling function of finite element method the waveform of transient magnetic field and electromotive force are obtained. Based on the experimental data, the calculation results of static and transient magnetic field are compared, the reasons causing inexact data are analyzed, and the correctness and effectiveness of the author＇s theoretical analysis results are verified.
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