文章精选 I 采用谐波电流控制策略提高带辅助定子轮辐式永磁电机转矩

Torque Improvement of Spoke-type Permanent Magnet Motor with Auxiliary Stator Using Harmonic Current Control Strategy

Hao Wu1; Wenliang Zhao1; Zheng Li2; Xiuhe Wang1

1. Shandong University, Jinan, China

2. Jinan Heating Group CO. LTD, Jinan, China

H. Wu, W. Zhao, Z. Li and X. Wang, "Torque Improvement of Spoke-type Permanent Magnet Motor with Auxiliary Stator Using Harmonic Current Control Strategy," in CES Transactions on Electrical Machines and Systems, vol. 7, no. 2, pp. 210-217, June 2023, doi: 10.30941/CESTEMS.2023.00022.

摘 要

由于磁通聚焦效应，带辅助定子的轮辐式永磁电机具有很高的转矩性能。为了进一步提高其转矩密度，本文提出了一种采用谐波电流策略的控制方法。在理论分析的基础上，借助有限元法（FEM）建立了一个由 dq 轴电流和电气角度组成的三维转矩查询表。确定并总结了每个转子位置的每安培最大转矩曲线，以充分说明电机转矩与电流振幅之间的关系。通过理论推导，得出最小转矩成本曲线为 ∂Te/∂i2 等值线，可用于识别谐波电流以提高转矩密度。与传统策略相比，所提出的控制策略可使正转和反转的转矩密度分别提高 1.22% 和 1.40%。实验结果验证了分析和仿真结果，并证明了所提策略的有效性。

Abstract

The spoke-type permanent magnet motor with auxiliary stator exhibits high torque performance owing to the flux focus effects. To further improve its torque density, this paper proposes a control method by using harmonic current strategy. Based on the theoretical analysis, a 3-D torque look-up table by dq-axis current and electrical angle is established with the aid of the finite element method (FEM). The maximum torque per ampere curve at each rotor position is identified and summarized to adequately indicate the relationship between torque and current amplitude of the motor. Through theoretical derivation, it is concluded that the minimum torque cost curve is the contour line of ∂Te/∂i2, which can be employed to identify the harmonic current for torque density improvement. Compared to traditional strategies, the proposed control strategy can increase torque density of forward and reverse torque by 1.22% and 1.40%, respectively. The experimental results verify the analysis and simulation results, as well as prove the effectiveness of the proposed strategy.

作者信息

Hao Wuwas born in China on December 1998. He received the B.S. degree in electrical engineering and automation from China University of Mining and Technology, Xuzhou, China, in 2020. He is currently working toward the M.E degree in the School of Electrical Engineering, Shandong University, Jinan, China. His current research interests include design, analysis and control of electrical machines.

Wenliang Zhao(S' 14–M' 16) was born in China on May 1987. He received the B.S. degree in control science and engineering from Harbin Institute of Technology, China, in 2011, and the Ph.D. degree in electronic systems engineering from Hanyang University, South Korea, in 2015. From 2015 to 2016, he was a Postdoctoral Fellow with Hanyang University, South Korea. In 2016, he joined the School of Electrical Engineering, Shandong University, as a Research Professor. Since 2020, he has been a Full Professor of Shandong University. He has authored or coauthored more than 100 papers on the topics of his research interests, which include design, analysis and control of electrical machines and power transformers.

Zheng Liwas born in China on March 1987. He received the M.E degree in software engineering from Shandong University, Jinan, China, in 2014. He is currently working in Jinan Heating Group CO. LTD., mainly engaged in the field of industrial automation and enterprise information construction.

Xiuhe Wangwas born in China on July 1967. He received the B.E. and M.E. degrees from Shandong University, Jinan, China, in 1989 and 1993, respectively, and the PhD degree from Shenyang University of Technology, Shenyang, China, in 1996. From 2001 to 2002, he was a Postdoctoral Fellow with Seoul National University, Seoul, South Korea. He is currently a Professor of electrical engineering and the Vice Head of the School of Electrical Engineering, Shandong University. His research interests include permanent magnet machines, energy-efficient machines, theoretical analysis and calculation of electromagnetic devices, and their application on electrical machines. He has authored/co-authored more than 100 papers on these topics.

《中国电工技术学会电机与系统学报（英文）》(CES TEMS)是中国电工技术学会和中国科学院电工研究所共同主办、IEEE PELS学会技术支持的英文学术期刊。期刊发表国内外有关高性能电机系统、电机驱动、电力电子、可再生能源系统、电气化交通等研发及应用领域中原创、前沿学术论文。中国工程院院士马伟明担任主编，IEEE的执委Don Tan博士为国际主编。目前已被Scopus、 Inspec、Google scholar、IEEE Xplore、中国科学引文数据库(CSCD) 核心版、DOAJ、CSTPCD、知网、万方、维普等数据库收录。

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