减小齿槽转矩的永磁电动机槽口优化设计被引量：11

Optimal Slot Opening Design for Cogging Torque Reduction of PM Motor

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摘要齿槽转矩是永磁电机最重要的参数之一,它的存在会造成电机的转矩波动、振动和噪声。采用一种简单的转矩计算模型,即一个磁极中心经过一个槽口所产生的齿槽拉力波形的移相叠加来近似整个永磁电机的齿槽转矩;利用此模型对永磁电机槽口进行优化设计,使得齿槽转矩通过叠加抵消达到最小化;最后用有限元分析法设计了一台面贴式永磁无刷电动机,对该模型进行了验证。 Cogging torque is one of the most important parameters of PM motors, which causes torque ripple, vibration and acoustic noise. In this paper, a simple model of cogging torque, using torque superposition of waveforms phase-shifted from torque waveform of one poletransition over one slot, is presented. An optimal design for cogging torque reduction based on the superposition model is made. The optimal design method is verified with finite element analysis.

作者董仕镇马隽沈建新

机构地区浙江大学电气工程学院

出处《微电机》北大核心 2007年第12期1-3,共3页 Micromotors

关键词永磁电动机齿槽转矩槽口转矩叠加法转矩波动有限元分析无刷直流电动机 PM motor Cogging torque Slot opening Torque superposition method Torque ripple Finite element analysis BLDCM

分类号 TM351 [电气工程—电机]

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