AC-side current waveform improvement of single-phase rectifiers using a triple-frequency PWM scheme

This paper proposes and discusses single-phase rectifiers with a triple-frequency pulsewidth modulation (PWM) scheme. The rectifiers consist of high-, medium-, and low-power sub-converters operated at low, medium, and high frequencies, respectively. The proposed rectifier can equivalently operate as...

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Bibliographic Details
Main Authors: Nagashima, N., Ohgoe, Y., Yoshida, T., Miyashita, O.
Format: Conference Proceeding
Language:English
Subjects:
AC-to-dc converter
Current harmonics reduction
Frequency
Power engineering and energy
Power engineering computing
Power factor correction
Power harmonic filters
Power system harmonics
Pulse width modulation
Pulse width modulation converters
PWM
Rectifiers
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Summary:This paper proposes and discusses single-phase rectifiers with a triple-frequency pulsewidth modulation (PWM) scheme. The rectifiers consist of high-, medium-, and low-power sub-converters operated at low, medium, and high frequencies, respectively. The proposed rectifier can equivalently operate as one rectifier that delivers the highest power at the highest frequency defined in the triple-frequency PWM rectifier. A parallel type of the rectifier is mainly discussed in this paper. A cascade type is also considered. In both configurations, current harmonics on the ac-side are greatly reduced, and an approximate unity power-factor is obtained. Experimental and simulation results verify the usefulness of the method
DOI:10.1109/EPE.2005.219421