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A new very high efficiency 10 kW isolated R4 boost converter for low-voltage high-power fuel cell applications is presented. Using a new concept for partially paralleling of isolated boost converters, only the critical high ac-current parts are paralleled. Four 2.5 kW power stages, consisting of full-bridge switching stages and power transformers, operate in parallel on primary side and in series...
Boost converters are widely used in the low-to-high DC/DC application and power-factor-corrected circuits. Based on the interleaved boost converter with coupled inductors, a converter consisting of four interleaved boost converter cells is proposed in this paper. The boost converter cells can share the input current, so this prototype circuit can be designed to have small input current ripple. And...
Parallel operation of three-phase power-factor-corrected (PFC) rectifiers is a critical issue for high-power applications, since it extends the power range to a much higher level and allows modular design. The technical challenges are current sharing and circulating current control among the modules. This paper studies these phenomena within two paralleled rectifiers and proposes a new current-sharing...
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