Parallel-Path Power Flows in Magnetic-Geared Permanent Magnet Machines with Sandwiched Armature Stator

Chinese Journal of Electrical Engineering ›› 2017, Vol. 3 ›› Issue (1): 16-26.

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Parallel-Path Power Flows in Magnetic-Geared Permanent Magnet Machines with Sandwiched Armature Stator

Yujun Shi^1,2, Jin Wei^1,2, Linni Jian^1,2,*

1.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China;
2. Shenzhen Key Laboratory of Electric Direct Drive Technology, Shenzhen, 518055, China

Published:2019-11-01
Contact: E-mail: jianln@sustc.edu.cn.
About author:Yujun Shi received the B.Sc. degree from Hubei Polytechnic University, Huangshi, China, in 2010, and the M.Sc. degree from Jiangsu University, Zhenjiang, China, in 2013. From 2013 to 2014, he worked as a research assistant in Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. He is currently a research assistant with Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China. His research interests include design, analysis and optimization of permanent-magnet electric machines. Jin Wei received the B.Sc. degree and the M.Sc. degree from Hefei University of Technology, Hefei, China, in 2009 and 2012, respectively. From 2012 to 2014, he worked as a research assistant in Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. He is currently a research assistant with Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China. His research interests mainly include mechanical design and manufacturing of permanent-magnet electric machines. Linni Jian received the B.Eng. degree from Huazhong University of Science and Technology, Wuhan, China, in 2003, the M.Eng. degree from the Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China, in 2006, and the Ph.D. degree from The University of Hong Kong, Pokfulam, Hong Kong, in 2010. He is currently an Assistant Professor in the Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China. His research interests include the areas of electric drives, power electronics, and smart grids. In these areas, he has published more than 60 referred technical papers, one monograph, and several book chapters. He is also the holder of more than 20 patents.
Supported by:
Supported in part by the National Natural Science Foundation of China under Grant 51377158, by the Natural Science Foundation of Guangdong Province under Project 2014A030306034, 2015TQ01N332, and by the Science and Technology Innovation Committee of Shenzhen under Projects ZDSYS201604291912175, and JCYJ20150529152146473.

Abstract

Abstract: Due to the large torque density of magnetic gears(MGs), magnetic-geared permanent magnet machines(MGPMs) have become promising competitors in the family of direct-drive machines. According to the deployment of armature stators, MGPMs can be generally classified into three types, viz., MGPM with inner armature stator(MGPM-IAS), MGPM with outer armature stator(MGPM-OAS), and MGPM with sandwiched armature stator(MGPM-SAS). Our investigation finds out that the MGPM-SAS can achieve parallel-path power flows better than the MGPM-OAS, while the MGPM-IAS is with serial power flow paths. Therefore, the torque capability of MGPM-IAS is limited by the torque transmission capability of its integrated MG. However, the MGPM-SAS has the possibility to offer even higher output torque than its integrated MG. This paper focuses on the MGPM-SAS. And three typical MGPMs and their power flow paths are introduced; the interaction of electromagnetic fields in MGPM-SAS is analyzed; simulation calculation and experimental verification are conducted to demonstrate the validity of the theoretical analysis.

Key words: Direct drive, permanent magnet, magnetic gear, integrated machines, flux modulation, power flows

Yujun Shi, Jin Wei, Linni Jian. Parallel-Path Power Flows in Magnetic-Geared Permanent Magnet Machines with Sandwiched Armature Stator[J]. Chinese Journal of Electrical Engineering, 2017, 3(1): 16-26.

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Parallel-Path Power Flows in Magnetic-Geared Permanent Magnet Machines with Sandwiched Armature Stator

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