Three-phase unfolding based quasi-single stage converter topologies for three-phase AC to DC applications

Dorai Yelaverthi, Utah State University

Dr. Yelaverthi presented on research at the USU Power Electronics Laboratory on Unfolding based quasi-single stage three-phase AC to DC converters. This approach can achieve higher power density and efficiency compared to two-stage topologies. He will present a brief literature review of various topologies followed by the quantitative benefits of the Unfolding approach. Prototype design details and experimental results of 560 kW Medium Voltage (4.16 kV) AC to 800 VDC were also discussed.

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