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Implementation of single-phase boost power-factor-correction circuits in three-phase applications

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2 Author(s)
Spiazzi, G. ; Dipartimento di Elettronica e Inf., Padova Univ., Italy ; Lee, F.C.

A three-phase rectifier employing three single-phase boost power-factor-correction circuits is analyzed. Each converter operates in the continuous conduction mode (CCM), which allows a high power factor and a small EMI filter. Current sharing is ensured by a common voltage loop driving the individual current loops of the three converters. A suitable circuit arrangement is devised to limit phase interaction. The zero-voltage-transition technique (ZVT) is successfully applied to each converter, in order to obtain zero turn on losses and soft turnoff of the freewheeling diodes. Results of a 1800-W 100-kHz experimental prototype are reported, which confirm the theoretical forecasts

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:44 ,  Issue: 3 )

Date of Publication:

Jun 1997

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