The Single-Stage Taipei Rectifier—Design Consideration and Performance Evaluation

A new three-phase, single-stage, isolated zero-voltage-switching (ZVS) rectifier that achieves less than 5% input-current total harmonic distortion (THD) and provides tightly regulated output voltage is introduced. The proposed circuit is obtained by integrating the three-phase, two-switch, ZVS, discontinuous-current-mode, boost power-factor-correction rectifier, for short named the TAIPEI rectifier, with the ZVS full-bridge phase-shift dc/dc converter. The performance was evaluated on a three-phase 2.7-kW prototype designed for high voltage direct current (HVDC) distribution applications with the line-to-line voltage range from 180 to 264 VRMS and with a tightly regulated variable dc output voltage from 200 to 300 V. The prototype operates with ZVS over the entire input-voltage and load-current range and achieves less than 5% input-current THD with the efficiency in the 95% range.