Abstract
This paper describes a new low cost three-phase AC-DC high power/low harmonic controlled rectifier and its analysis, design and performance. The circuit consists of a three-phase diode bridge rectifier followed by a boost stage containing only one switch and one boost-inductor; the proposed power converter is used to automatically draw sinusoidal input current waveforms, with high efficiency. This is achieved with discontinuous input voltage to the rectifier and with a discontinuous inductor current mode of operation of the boost power converter. By using a simplified single-phase model and symbolic analysis method, analytical equations are obtained and used for design. >
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