DocumentCode :
1200111
Title :
Excitation Control of a Brushless Synchronous Motor
Author :
El Missiry, Mosad M.
Author_Institution :
Department of Electrical Engineering, University of Zimbabwe
Issue :
5
fYear :
1984
Firstpage :
1285
Lastpage :
1289
Abstract :
A simple system is presented for controlling the excitation of a brushless synchronous motor independently of the motor speed or load angle. The system comprises a pulsewidth modulated (PWM) inverter provided with controllable pulsenumber. Experimental measurements of the induced rotor excitation shows that a wide range of excitation control is obtainable by simply varying the pulsenumber of the output waveform of the inverter while keeping the fundamental frequency of the inverter unaltered. An approximate formula for the rotor current is also given which confirms the dependence of the rotor current upon the pulsenumber.
Keywords :
Bridge circuits; Brushless motors; Control systems; Frequency; Pulse inverters; Pulse measurements; Pulse width modulation inverters; Resonant inverters; Rotors; Synchronous motors;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.1984.4504595
Filename :
4504595
Link To Document :
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