Title :
AC-side current waveform improvement of single-phase rectifiers using a triple-frequency PWM scheme
Author :
Nagashima, Norihiro ; Ohgoe, Yasuharu ; Yoshida, Toshiya ; Miyashita, Osamu
Author_Institution :
Dept. of Electron. & Comput. Eng., Tokyo Denki Univ., Saitama
Abstract :
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
Keywords :
PWM rectifiers; harmonics suppression; power convertors; power factor; AC-side current waveform; current harmonics; single-phase rectifiers; triple-frequency PWM scheme; triple-frequency pulsewidth modulation scheme; unity power-factor; Frequency; Power engineering and energy; Power engineering computing; Power factor correction; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Rectifiers; Uniform resource locators; AC-to-dc converter; Current harmonics reduction; PWM; Power factor correction;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219421
