Beta
175880

A Design-Technique for the Prediction of Steady State Performance of a Homopolar Linear Synchronous Motor.

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Electrical Engineering

Abstract

 Linear synchronous motors appear to have particular advantage when used for combined traction and levitation of urban transport vehicles. The usual problems of this application are : 
(i) The coming together of the exact traction force with the correct levitation force
at all times of duty cycle of transport vehicle. Hence, the correct air-gap flux density and identification of operating conditions, which meet the traction and levitation force requirements, should be investigated. 
(ii) The weight of the motors.
In order to predict the motor behaviour over the range of operating conditions, 3-field solutions based on 3-dimensional finite-difference method for m.m.f's, arising from d.c. excitation and from d, q axes armature current, have to be calculated. These solutions when superimposed with their relative strength obtained from a phasor diagram, relating the currents of the equivalent circuit to the voltages, will produce the air-gap flux density which exactly corresponds to the required traction and levitation force. This combination between the 3-field solutions (magnetic circuit) and the phasor diagram (electrical circuit) is the basis of a design-technique presented in this paper. 
This technique is applied for the 
synchronous linear performance of a homopolar E-core prediction of the steady-state motor capable of lifting and driving a 3-tonne vehicle, with 10 m/sec, and an acceleration of 1.47 m/sec2.
 
 
 
 

 

DOI

10.21608/bfemu.2021.175880

Authors

First Name

Saad

Last Name

El-Drieny

MiddleName

-

Affiliation

Assistant Professor., Electrical Engineering Department., Faculty of Engineering., El-Mansoura University., El-Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

Volume

12

Article Issue

2

Related Issue

25313

Issue Date

1987-12-01

Receive Date

1987-11-18

Publish Date

2021-06-07

Page Start

69

Page End

77

Print ISSN

1110-0923

Online ISSN

2735-4202

Link

https://bfemu.journals.ekb.eg/article_175880.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=175880

Order

14

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

A Design-Technique for the Prediction of Steady State Performance of a Homopolar Linear Synchronous Motor.

Details

Type

Article

Created At

22 Jan 2023