DocumentCode :
795246
Title :
A New Control of PWM Inverter Waveform for Minimum Loss Operation of an Induction Motor Drive
Author :
Takahashi, Isao ; Mochikawa, Hiroshi
Author_Institution :
Faculty of Engineering, Technical University of Nagaoka, Nagaoka-shi, Niigata-ken, Japan 949-54.
Issue :
3
fYear :
1985
fDate :
5/1/1985 12:00:00 AM
Firstpage :
580
Lastpage :
587
Abstract :
A simplified method to calculate harmonic currents of an induction motor and optimum PWM switching patterns to minimize the harmonic loss are presented. Neglecting the harmonic iron loss, the harmonic loss of the motor is proportional to the square of the rms current. The waveform of the harmonic current is approximately equal to that of the leakage reactance applied to the same PWM voltage. Its approximation error is very small under normal operating condition. The main results obtained using these approximation are as follows: 1) the optimum PWM patterns of the pulsenumber from seven to 41; 2) how to choose the optimum pattern and calculate it by using a computer; 3) the effect of a resistance of the windings and skin effect of the secondary conductor; and 4) microcomputer PWM optimum voltage control schemes. Comparison with other controls is shown by using experimental and calculating results and confirms the effectiveness of this control scheme.
Keywords :
Approximation error; Conductors; Induction motor drives; Induction motors; Iron; Pulse width modulation; Pulse width modulation inverters; Skin effect; Space vector pulse width modulation; Voltage;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.1985.349713
Filename :
4158029
Link To Document :
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