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HAIT Journal of Science and Engineering B Volume 2, Issues 3-4, pp. 327-351 © 2005 Holon Academic Institute of Technology | ||||
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Analysis and design of a soft switched AC-to-DC converter operating in DCM
Ping Chen and Ashoka K.S. Bhat*
Deptartment of Electrical and Computer Engineering | University of Victoria, Victoria, BC V8W 3P6, Canada *Corresponding author: bhat@ece.uvic.ca Received 1 March 2005, accepted 6 June 2005
| This paper presents a soft-switched ac-to-dc boost converter cell operating in discontinuous current mode (DCM). Equivalent circuits for the various operating intervals of the converter are presented and analyzed. Design procedure is illustrated with a design example of a 1 kW, 600 V output ac-to-dc converter cell operating on a 165 to 265 V (rms) utility-line and switching at 100 kHz. Operation and performance of the designed converter is verified using SPICE simulations and experimental results. Detailed loss calculations are given. This converter has low line-current THD and will be used as cells of a multi-phase 5 kW converter.
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