宽调速可控磁通永磁同步电机磁路设计和有限元分析被引量：48

MAGNETIC CIRCUIT DESIGN AND FINITE ELEMENT ANALYSIS OF WIDE-SPEED CONTROLLABLE-FLUX PMSM

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摘要提出了一种内置混合式转子可控磁通永磁同步电机,是真正意义上的宽调速电机。其径向永磁体采用剩磁密度和矫顽力都很高的钕铁硼,而切向永磁体采用剩磁密度高但矫顽力却很低的铝镍钴。通过定子直轴电流矢量脉冲控制铝镍钴的磁化方向和强弱,使钕铁硼产生的磁通部分穿过气隙,部分被铝镍钴在转子内部旁路,使永磁气隙主磁通受控。给出了永磁体尺寸和磁路结构尺寸的选取原则,特别是将交轴磁路磁阻设计的较大,交轴电感较小时,弱磁效果会更好,还能减少电枢反应对永磁气隙主磁通的影响。对两种极端磁化状况下模型电机内部磁场的分布进行了有限元分析,说明所提出的设想是可行的。 A interior composite-rotor controllable-flux permanent magnet synchronous machine （PMSM） for true wide-speed operation is proposed. The radial-set magnets are NdFeB that has high remanent flux density Br and high coercive force Hc. The tangential-set magnets are AlNiCo that has high Br and low Ho The magnetizing intensity and direction of AlNiCo controlled by a stator d-axis current vector pulse. The flux created by NdFeB is repelled by AlNiCo to stator and the air-gap PM-flux is intensified, Or the flux created by NdFeB is partially bypassed by AlNiCo in the rotor and the air-gap PM-flux is weakened. The dimension of permanent magnets and magnetic circuit structure are demonstrated. When the q-axis larger magnetic resistance and smaller inductance are designed, the result of flux-weakening will be better, and the influence of armature reaction on air-gap PM-flux is weakened. The internal magnetic field distribution in two ultra magnetized situations was analyzed by finite element analysis, and the proposed assumption is proved viable.

作者陈益广王颖沈勇环唐任远

机构地区天津大学电气与自动化工程学院沈阳工业大学电气工程学院

出处《中国电机工程学报》 EI CSCD 北大核心 2005年第20期157-161,共5页 Proceedings of the CSEE

关键词可控磁通永磁同步电机记忆电机内置混合式转子有限元分析磁路设计 Controllable-flux PMSM Memory motors Interior composite-rotor Finite element analysis Magnetic circuit design

分类号 TM351 [电气工程—电机]

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