Programmable PFC Based Hybrid Multipulse Power Rectifier with Sinusoidal Input Line Current Imposed by Digital Controller

This paper presents an improved analysis of a novel Programmable PFC Based Hybrid Multipulse Power Rectifier (PFC-HMPR) for utility interface of power electronics converters. The proposed hybrid multipulse rectifier is composed by an ordinary three-phase 6-pulse diode-bridge rectifier (Graetz bridge) with a parallel connection of single-phase switched converters in each three-phase rectifier leg. In this work, the authors present a novel analysis of the PFC-HMPR operating with sinusoidal input currents. A complete discussion about the controlled rectifiers power contribution is also included. The mathematical analysis presented in this paper corroborates with the experimental results of a 2.8 kw prototype implemented in laboratory using digital controller.