Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles

Author:

Zhao Junfeng12ORCID,Zhao Lingyun3,Zou Yuwei4,Chen Tianjin5

Affiliation:

1. Key Laboratory of Mold Intelligent Manufacturing of Taizhou, Taizhou 318020, China

2. School of Mechatronics and Mould Engineering, Taizhou Vocational College of Science & Technology, Taizhou 318020, China

3. School of Mechanical Engineering, Dalian University of Technology, Dalian 116023, China

4. School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China

5. Xuji Power Co., Ltd., Xuchang 461000, China

Abstract

The purpose of this paper is to compare and analyze the electromagnetic characteristics of the basic structure of the coil in the electromagnetic coupling mechanism for the wireless power supply of permanent magnet motors in electric vehicles. The electromagnetic coupling mechanism is one of the key technologies for wireless power transmission and the coil structure plays a key role in the transmission performance of the coupling mechanism, and different structures can achieve different performances. The central objective of coil structure studies is to investigate how the coupling coefficient can be increased to achieve greater transmitted power and higher efficiency. In this paper, we investigate two basic coil configurations, circular and square, by studying their flux density variations when used as transmitting coils and their electromagnetic coupling characteristics when used as receiving coils. Three couplers consisting of circular and square coils are also analyzed in simulations and experiments are carried out on couplings containing circular and square coils of the same area. The results of the study show that the qualitative analysis, simulation analysis and experimental results are in high agreement. The results of this paper are an important reference for the design and optimization of wireless power coils for permanent magnet motors in electric vehicles.

Funder

National power grid headquarter science and technology project

Publisher

MDPI AG

Subject

Automotive Engineering

Reference17 articles.

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