【摘要】 基于内置式永磁无刷直流电动机磁桥处漏磁较大的特点,提出了在转子冲片上打空气孔隔磁的方法,并通过电磁场进行了仿真分析,证实了空气孔隔磁的有效性,给出了不同孔径和气隙长度对漏磁的影响,为选择合适的隔磁空气孔和气隙长度提供依据。实验样机的电磁场分析和实测结果,进一步说明该设计的有效性、可行性。更多还原

【Abstract】 The leakflux at the magnetic bridge is great in the inter ior permanent magnet brushless DC motor,and a method punching ventage in the sta tor laminations is presented to obstruct flux at the magnetic bridge.The electro magnetic field results under different ventage diameter and different airgap len gth are investigated.Particular attention is paid to average magnetic density of airgap and magnetic bridge,leakflux coefficient. Experimental and simulation re sults of the motor model are presented,they all prove the validity of punching v entage.更多还原