内置式交替极永磁同步电机性能及机理研究

doi:10.19595/j.cnki.1000-6753.tces.170506

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摘要

分析比较了传统内置式永磁同步电机与内置式交替极永磁同步电机的电磁性能。设计了一台五相20/18槽极组合的内置式交替极永磁同步电机,与传统内置式永磁同步电机相比,该电机在保持较好的输出能力的情况下节省了永磁体用量,提高了电机的可靠性且节省了成本。利用磁路法及气隙磁通密度波形的傅里叶解析计算得到每极下气隙基波磁通,验证了交替极设计可提高永磁体的利用率。与传统内置式永磁同步电机不同,内置式交替极永磁同步电机中永磁极极弧的选择范围更大,通过合理优化永磁极与铁心极的配合能够进一步提升该电机的输出转矩。其次,比较分析了内置式交替极永磁同步电机的反电动势谐波分量,发现该电机更加适用于谐波电流注入法,且分别对永磁体端部槽形、永磁体磁化方向长度及不均匀铁心极极弧进行优化设计,使得优化后的内置式交替极永磁同步电机在明显减少永磁体用量的情况下能够保持较好的输出能力,且具有更好的转矩质量及弱磁能力。

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	樊英
	谭超

关键词 ：永磁同步电机, 交替极, 有限元法, 电磁性能

Abstract：

Based on finite element method, the electromagnetic performancesof traditional inserted permanent magnet synchronous machine(IPMSM) and inserted consequent-pole permanent magnet synchronous machine(ICPPMSM) are compared and analyzed. In this paper, a five-phase 20-slot 18-pole ICPPMSM is proposed. Compared with the traditional inserted V-shaped machine with same design parameters, the proposed consequent-pole machine can obviously save the amount of PMs but maintain the comparable output capability, which can improve reliability and save costs. Magnetic circuit and Fourier series analysis are applied to compute fundamental amplitude of airgap flux under each pole. The analytical results demonstrate the configuration of consequent-pole can increase the utilization ratio of PMs.Besides, unlike the traditional IPMSM, the pole-arc of PM-pole in ICPPMSM has wider selection range. By choosing pole-arc of PM-pole and iron-pole, the output performance of ICPPMSM can be further improved. Based on harmonic analysis of induced voltage, the harmonic current injection is more suitable for ICPPMSM. Finally, flux barriers, PM magnetizing length and unequal iron-pole are optimized to acquire better torque quality and flux weakening.

Key words： Permanent magnet synchronousmachines consequent-pole finite element analysis electromagnetic performance

收稿日期: 2017-04-24 出版日期: 2018-06-13

PACS:

TM351

基金资助:

国家自然科学基金项目资助（61374125,51177012）

通讯作者: 樊英女,1970年生,教授,博士生导师,研究方向为电动汽车电机驱动控制系统、新型永磁电机设计及风力发电技术等。

作者简介: 谭超男,1992年生,硕士,研究方向为永磁同步电机的设计及分析等。E-mail：tanc523@163.com

引用本文:

樊英, 谭超. 内置式交替极永磁同步电机性能及机理研究[J]. 电工技术学报, 2018, 33(11): 2414-2422. Fan Ying, TanChao. Analysis of Electromagnetic Performanceand Principles in Inserted Consequent-Pole Permanent Magnet Synchronous Machines. Transactions of China Electrotechnical Society, 2018, 33(11): 2414-2422.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.170506 https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I11/2414

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