Characteristics of a disc permanent magnet linear synchronous machine with back iron

Author

Liu, Cheng-Tsung ; Chen, Jyh-Wei ; Su, Kun-Shian

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3544

Lastpage

3547

Abstract

A disc permanent magnet linear synchronous machine (DPMLSM) with back iron is presented in this paper. The proposed machine is to fulfil the requirements of high efficiency and large torque for electric vehicle (EV) applications. The back iron plays an important role in enhancing flux linkage and reducing flux leakage so that the designed machine has characteristics of high flux and power density to reduce the physical volume of EV. The steady-state, dynamic operating characteristics, and three-dimensional (3-D) finite element analyses are obtained to demonstrate the performance of the machine. Experimental results show that the proposed machine has a very low line current distortion with just a six-step inverter and a very wide range of operating speed without gear-ratio devices

Keywords

electric vehicles; finite element analysis; invertors; linear synchronous motors; magnetic flux; permanent magnet motors; 3-D finite element analyses; back iron; disc permanent magnet linear synchronous machine; dynamic operating characteristics; electric vehicle; flux leakage reduction; flux linkage enhancement; high efficiency; high flux; power density; six-step inverter; torque; Couplings; Electric vehicles; Finite element methods; Iron; Performance analysis; Permanent magnets; Steady-state; Synchronous machines; Torque; Vehicle dynamics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908893

Filename

908893