APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335)
DOI: 10.1109/apec.2002.989330
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A low cost, simple torque ripple reduction technique for three phase inductor motors

Abstract: A simple 'End Pulse Modulation' PWM technique for three-phase induction motor adjustable speed drives is proposed and analyzed for torque ripple. Fourier analysis is performed on the motor winding voltage to obtain the harmonic amplitudes. Each of the voltage harmonics are applied to the torque equation. A sum of the torque is shown with both those adding and subtracting from the main torque. A comparison is made between the PWM harmonic torque and harmonic torque developed using a Six-Step at several drive fr… Show more

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Cited by 2 publications
(2 citation statements)
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“…A method of predicting the sixth-harmonic electromagnetic torque of an induction motor caused by excitation with six-step voltage waveforms was presented in [7]. The resulting pulsating torque can have undesirable effects [8] including vibration and audible noise [9], [10]. For example, pulsating torque can excite the natural frequencies of the mechanical drivetrain, degrading system performance [11], [12].…”
Section: Introductionmentioning
confidence: 99%
“…A method of predicting the sixth-harmonic electromagnetic torque of an induction motor caused by excitation with six-step voltage waveforms was presented in [7]. The resulting pulsating torque can have undesirable effects [8] including vibration and audible noise [9], [10]. For example, pulsating torque can excite the natural frequencies of the mechanical drivetrain, degrading system performance [11], [12].…”
Section: Introductionmentioning
confidence: 99%
“…The nature of power quality problems, their fiequency, and the problems they cause have been reported in [ 1,2,3]. Input voltage unbalance, sags, waveform distortion, frequency variation, noise, spikes, outages and surges are all well-known power quality disturbances.…”
Section: Introductionmentioning
confidence: 99%