A novel soft-switching high-frequency transformer isolated three phase AC-to-DC converter with low harmonic distortion

A high-frequency transformer isolated, fixed-frequency, 3-/spl phi/ single-stage AC-to-DC converter using a boost-integrated bridge converter is proposed. This converter enjoys natural power factor correction with low line current harmonic distortion and symmetric high frequency voltage and current waveforms while ensuring zero voltage switching for all the switches for a wide variation in load and line voltage. Various operating modes of the converter are presented and analyzed. Based on the analysis, design curves are obtained and an optimum design is given. A design example is presented. Results obtained from SPICE simulation and a 500 W output prototype are given to verify the performance of the proposed converter for varying load as well as line voltage.

[1]  E. H. Ismail,et al.  A single transistor three phase resonant switch for high quality rectification , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[2]  Johann W. Kolar,et al.  A novel three-phase single-switch discontinuous-mode AC-DC buck-boost converter with high-quality input current waveforms and isolated output , 1994 .

[3]  Y. Jang,et al.  New single-switch three-phase high power factor rectifiers using multi-resonant zero current switching , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[4]  O. Apeldoorn,et al.  Single transistor three phase power conditioners with high power factor and isolated output , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[5]  Giorgio Spiazzi,et al.  High-precision current source using low-loss, single-switch, three-phase AC/DC converter , 1996 .

[6]  U. Drofenik,et al.  VIENNA rectifier II-a novel single-stage high-frequency isolated three-phase PWM rectifier system , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.