A three-phase AC-to-DC high voltage, high frequency, zero-voltage switching resonant converter using single-phase con-verters in modular approach is presented. Modified series-parallel resonant converter (MSPRC) for modular approachis simulated and experimental prototype converter is developed. The proposed converter has many advantages like powerfactor correction, simple control and power expandability. The results are obtained and compared for three-wire and four-wire systems. Experimental results are in good agreement with simulation results. The power factor in three-wiremodular converter system is very good compared to four-wire system.
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