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A New Type of CPPM Machine with Stator Axial Magnetic Ring

  • Xie, Kun (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Li, Xinhua (School of Electrical & Electronic Engineering, Hubei University of Technology) ;
  • Ma, Jimin (School of Electrical & Electronic Engineering, Hubei University of Technology) ;
  • Wu, Xiaojiang (School of Electrical & Electronic Engineering, Hubei University of Technology) ;
  • Yi, Hong (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Hu, Gangyi (China Ship Development and Design Center)
  • Received : 2017.08.12
  • Accepted : 2018.01.26
  • Published : 2018.05.01

Abstract

This paper proposes a new type of consequent-pole permanent-magnet (CPPM) machine with stator axial magnetic ring that increases torque capability over a wide speed range and enhances efficiency for the built-in rare-earth permanent magnet synchronous machine used in new energy vehicles. The excitation winding of the CPPM hybrid excitation synchronous machine in the stator is replaced by ferrite magnetic ring to simplify the structure and manufacturing process of the machine. The basic structure and magnetic regulation principle of the proposed machine are introduced and compared with the traditional interior rare-earth permanent magnet synchronous machine and CPPM hybrid excitation synchronous machine. Finally, experimental results of a new type of CPPM synchronous motor prototype with axial magnetic ring are introduced in the paper.

Acknowledgement

Supported by : National Natural Science Foundation of China (NSFC)

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