CUI Xue-meng, LIU Yong, LIANG Yan-ping. Non-uniform Air Gap Effect on the Performance of Permanent Magnet Synchronous Generator with Tangential Structure[J]. 2014, 19(3): 100-104.
CUI Xue-meng, LIU Yong, LIANG Yan-ping. Non-uniform Air Gap Effect on the Performance of Permanent Magnet Synchronous Generator with Tangential Structure[J]. 2014, 19(3): 100-104.DOI: 10.15938/j.jhust.2014.03.019.
非均匀气隙对切向永磁同步发电机性能影响
摘要
针对永磁同步发电机(PMSG)谐波含量和振动较大的问题
提出采用非均匀气隙削弱齿谐波和齿槽转矩的方法.分析了非均匀气隙永磁同步发电机的运行机理
讨论了不同偏心程度非均匀气隙情况下
永磁同步发电机的空载反电动势、输出功率、电机效率、波形畸变率等参数的变化规律.通过场路耦合法
以一台切向式永磁同步发电机为例进行了仿真
结果表明非均匀气隙能改善气隙磁场波形
电机波形畸变率THD由4.86%降到2.48%
齿槽转矩降低40%. 更多还原
Abstract
Aiming at the problem that interior permanent magnet synchronous generator( PMSG) has larger har-monic and vibration,using non-uniform air gap to weaken slot harmonic and cogging torque is proposed. The run-ning mechanism of non-uniform air gap was analyzed and discussed the change law of the PMSG’s parameters suchas no-load back electromotive force( EMF) ,output power,efficiency and total harmonic distortion( THD) . Throughthe field-circuit method,with an interior permanent magnet synchronous generator( IPM) as an example for the sim-ulation,the results shows that non-uniform air gap can effectively improve the waveform of air gap field,it’s THDdrop from 4. 86% to 2. 48% and the cogging torque lower by 40% .