Title :
Elimination of low-frequency harmonics caused by PWM in a three-phase soft-switched boost rectifier
Author :
Wu, Jia ; Lee, Fred C. ; Boroyevich, Dushan
Author_Institution :
American Power Conversion, North Billerica, MA, USA
Abstract :
This paper presents three major causes of low-frequency harmonics in a high-frequency soft-switched three-phase pulsewidth modulation (PWM) boost rectifier: pulsewidth limits; an improper space-vector modulation scheme; and dead time. Among these, the pulsewidth limits are related to soft-switching techniques. To eliminate undesirable low-frequency harmonics, each cause is illustrated and a solution is provided. Both simulation and experimental results prove the effectiveness of the proposed solutions. Due to the similarities between boost rectifiers and voltage-source inverters, the conclusions of this paper are also applicable to high-frequency PWM voltage-source inverters
Keywords :
AC-DC power convertors; PWM power convertors; compensation; harmonic distortion; harmonics suppression; power conversion harmonics; rectifying circuits; switching circuits; PWM low-frequency harmonics elimination; dead time; experiments; pulsewidth limits; simulation; soft-switching techniques; space-vector modulation scheme; three-phase soft-switched boost rectifier; voltage-source inverters; Phase modulation; Power conversion; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
