UWSpace is currently experiencing technical difficulties resulting from its recent migration to a new version of its software. These technical issues are not affecting the submission and browse features of the site. UWaterloo community members may continue submitting items to UWSpace. We apologize for the inconvenience, and are actively working to resolve these technical issues.
 

A Study on Insulation Problems in Drive Fed Medium Voltage Induction Motors

Thumbnail Image

Files

Saeed_Thesisfinal.pdf (5.57 MB)

Date

2007-05-18T16:25:38Z

Authors

Haq, Saeed UL

Journal Title

Journal ISSN

Volume Title

Publisher

University of Waterloo

Abstract

The PWM (pulse-width-modulated) type voltage source converters (VSC) allow a precise speed control of induction motors with maximum achievable energy efficiency. However, the rapid growth of this technology has created quite a concern, as the PWM waveform produces complex transients that stress the motor insulation, to much severe levels, compared to the normal sinusoidal voltage waveforms. As a result, the machine may fail prematurely due to increased dielectric heating; high turn-to-turn stress caused by non-linear potential distributions; increased partial discharge (PD) activities due to overshoots in pulse waveforms; and built-up space charge by high frequency signals. The present work therefore addresses the problems associated with enamelled wires and groundwall insulation in motor stator coil working under PWM-VSC.

Description

Keywords

PWM Drives, Motor Insulation System

LC Keywords

Citation

URI

http://hdl.handle.net/10012/3052

Collections

Theses
Electrical and Computer Engineering