内置式“一”型单相永磁同步电动机转子结构优化  

Rotor Structure Optimization of Interior "—" Type Single-Phase Permanent Magnet Synchronous Motor

作　　者：赖文海[1] 黄开胜[1] 杨国龙[1] 胡函武 蔡黎明[1] 

机构地区：[1]广东工业大学,广州510006

出　　处：《微特电机》2015年第12期17-19,48,共4页Small & Special Electrical Machines

摘　　要：为降低电动机的转动惯量和齿槽转矩,采用转子铁心挖孔和不均匀气隙的方法对转子结构进行优化,改善自起动单相永磁同步电动机的起动性能。以8槽6极内置式"一"型单相永磁同步电动机为例,讨论了不带起动绕组自起动的可能性,分析改善起动性能的方法。基于Maxwell 2D对转子的铁心磁密进行计算和分析,选择合适的铁心挖孔位置。对转子偏心距进行扫描,分析转子偏心对转子气隙磁密、空载反电势及其波形畸变率的影响。仿真和计算结果表明,电动机的转动惯量和齿槽转矩得到了降低。该文为改善自起动单相永磁同步电动机的起动性能提供了一定的理论依据。In order to reduce the moment of inertia and cogging torque of motor,the structure of rotor was optimized through drilling hole of rotor core and employing non- uniform air gap in this paper,improving the line- starting ability of line- start single- phase permanent magnet synchronous motor. With a case study of 8 slots 6 phases interior ＂ —＂ type single- phase permanent magnet synchronous motor,the possibility of line- starting was discussed,and method of improving starting ability was analyzed. Magnetic flux density of rotor core was calculated and analyzed based on Maxwell 2D,appropriate position of rotor core for drilling hole was selected. Eccentricity of rotor was scanned; the influence of offsetting rotor for air- gap flux density of rotor,the no- load back EMF and their THD of waveform were analyzed. The result of calculation and simulation show that the moment of inertia and cogging torque was reduced. This paper provided some reference for improving starting ability of line- start single- phase permanent magnet synchronous motor.

关 键 词：转动惯量 齿槽转矩 MAXWELL 2D 畸变率 内置式 

分 类 号：TM341[电气工程—电机] TM351