Development of doubly-fed electric motor and its application

Pao Yue-kong Library Electronic Theses Database

Development of doubly-fed electric motor and its application

 

Author: Zhou, Zijun
Title: Development of doubly-fed electric motor and its application
Degree: M.Sc.
Year: 2015
Subject: Electric motors.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Electrical Engineering
Pages: v, 110 pages : illustrations (some color)
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2818313
URI: http://theses.lib.polyu.edu.hk/handle/200/8060
Abstract: Electric motors are by far the most efficient and the most environmental protective solution for vehicles power system. The advantages of electric motors are obvious. Firstly, they have relatively higher efficiency than conventional diesel motor which don’t release any poisonous gas to atmosphere. Besides, the internal structure of motor is simple which requires less maintenance cost. There are by far numerous design of motor such as synchronous motor, servo motor, stepper motor, switching reluctance motor and doubly-fed motor, etc. Among these, doubly-fed electric motor has good flexibility of parameter adjustment like power factor, operation speed, so on and so forth. Besides, doubly-fed motor doesn’t have slip ring which highly reduce the maintenance costs than the motors with slip rings. In this paper, automobile dynamics will be discussed to find out the design discipline for Brushless Doubly-fed Electric Motor (BDFM) such as air resistance, rolling resistance and slope resistance. With these requirements, ANSOFT Maxwell is used to simulate motor operation. As the parameters of BDFM like radius, pitch and tank area vary, the performance of motor will change. With results analysis, the design strategies of parameters for electric vehicles will be discussed.

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