DocumentCode :
856583
Title :
Analysis of the impact of pulse-width modulated inverter voltage waveforms on AC induction motors
Author :
Bonnett, Austin H.
Author_Institution :
U.S. Electr. Motors Div., Emerson Electr. Co., St. Louis, MO, USA
Volume :
32
Issue :
2
fYear :
1996
Firstpage :
386
Lastpage :
392
Abstract :
The purpose of this paper is not to reveal any new technology or major breakthrough pertaining to the impact of pulse-width modulated (PWM) adjustable speed drives operating on AC motors. Nor is it to discuss the merits of the various designs of the drives. The applications are also well defined. The area where much confusion still exists deals with the voltage waveform impact on the motor performance, hence, this is the central theme of the paper. The author has assumed that the traditional fundamental sine-wave voltage is (except for starting or outside influences) a steady-state condition, with a maximum and an RMS value, whereas the voltage waveform supplied by a PWM drive can have significant harmonics and transients which may alter the motor performance characteristics and life expectancy. The effects of the maximum voltage, rate of rise, switching frequencies, capacitors, resonance, and harmonics are all considered
Keywords :
DC-AC power convertors; PWM invertors; induction motor drives; machine insulation; machine windings; power system harmonics; variable speed drives; AC induction motors; PWM inverter voltage waveforms; adjustable speed drives; capacitors; fundamental sine-wave voltage; harmonics; life expectancy; maximum voltage; motor performance; performance characteristics; rate of rise; resonance; steady-state condition; switching frequencies; voltage waveform impact; AC motors; Pulse inverters; Pulse modulation; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Steady-state; Switching frequency; Variable speed drives; Voltage;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/28.491488
Filename :
491488
Link To Document :
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