Design and Experimental Verification of a Novel 1.2kW 480VAC/24VDC Two-Switch Three-Phase DCM Flyback-Type Unity Power Factor Rectifier

The basic principle of operation of a novel three-phase two-switch unity power factor flyback rectifier is analyzed and a system control concept is proposed. The stresses on the power components are calculated in an analytical form and used for designing a converter with an input voltage range of 480V±10% and 24V/50A DC output. The theoretical considerations are verified by an experimental analysis of a laboratory prototype of the system.

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