飞轮储能用高速永磁同步电机损耗分析与优化  

Analysis and Optimization of Loss of High Speed PMSM for Flywheel Energy Storage

作　　者：孙玉坤[1,2] 陈家钰 袁野 SUN Yukun;CHEN Jiayu;YUAN Ye(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Jiangsu Collaborative Innovation Center for Smart Distribution Network,Nanjing 212000,China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]江苏省配电网智能技术与装备协同创新中心,南京212000

出　　处：《微电机》2021年第8期19-22,79,共5页Micromotors

基　　金：国家自然科学基金(51707082,51877101);江苏省配电网智能技术与装备协同创新中心开放基金(XTCX202009)。

摘　　要：飞轮储能由于效率高、无污染等优点得到了广泛应用。作为核心部件,高速永磁同步电机的损耗直接制约着电机转速,进而影响飞轮储能系统的性能。文章给出电机铁耗和永磁体涡流损耗的计算公式,分析两种损耗的影响因素。根据损耗分析给出电机的拓扑结构,介绍电机的绕组形式、极槽配比和转子结构。提出一种新型磁障设置方法,在定子轭部设置空气磁障,引入径向分段和Halbach充磁方式,给出三种新型电机拓扑。有限元仿真结果表明,磁障的设置显著降低了铁耗,但也使得永磁体涡流损耗上升。径向分段和Halbach均能大幅度降低永磁体涡流损耗,将径向分段与磁障相结合是降低损耗的有效方法。减少槽口宽度能降低永磁体涡流损耗,但其取值要综合考虑损耗与加工难度。Flywheel energy storage has been widely used because of its high efficiency and no pollution. As a core component, the loss of high speed PMSM directly restricts the speed of the motor, and then affects the performance of flywheel energy storage system. In this paper, the formulas for calculating the iron loss and permanent magnet(PM) eddy current loss were given. According to the loss analysis, the topology of the motor was given. The winding form, pole slot ratio and rotor structure were introduced. A new method of magnetic barrier setting was proposed, and three new motor topologies were given by introducing radial segment and Halbach magnetizing. The finite element simulation results show that the setting of magnetic barrier significantly reduces the iron loss, but also makes the PM eddy current loss rise. Both radial segment and Halbach can greatly reduce the PM eddy current loss. Combining radial segment with magnetic barrier is an effective method to reduce the loss. Reducing the slot width can reduce the PM eddy current loss, but its value should consider the loss and processing difficulty synthetically.

关 键 词：飞轮储能 高速永磁同步电机 损耗 磁障 充磁方式 

分 类 号：TM355[电气工程—电机] TM351