Novel zero-voltage-transition PWM multiphase converters

Novel zero-voltage-transition (ZVT) pulse-width-modulation (PWM) multiphase converters are presented. To construct a ZVT multiphase converter in a conventional way, it is necessary to add the auxiliary circuits with as many number of phases. In the proposed converter, only one auxiliary circuit provides the zero-voltage switching (ZVS) for main switches and diodes of all phases. So, the new converters are cost effective and attractive for high-performance and high power-density conversion applications. Operation, features, and characteristics of the two-phase buck converter are illustrated and verified on a 4-kW 100-kHz insulated gate bipolar transistor (IGBT)-based (a MOSFET for the auxiliary switch) experimental circuit.

[1]  F. C. Lee,et al.  A zero-voltage-switching bidirectional battery charger/discharger for the NASA EOS satellite , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[2]  Fred C. Lee,et al.  Novel zero-voltage-transition PWM converters , 1992 .

[3]  R. G. Hoft,et al.  Principles of inverter circuits , 1985 .

[4]  F. Lee,et al.  Novel full bridge zero-voltage-transition PWM DC/DC converter for high power applications , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[5]  Timothy J. E. Miller,et al.  Switched Reluctance Motors and Their Control , 1993 .

[6]  G. H. Cho,et al.  Novel off-line zero-voltage-switching PWM AC/DC converter for direct conversion from AC line to 48 VDC bus with power factor correction , 1993, Proceedings of IEEE Power Electronics Specialist Conference - PESC '93.