A robust and embedded efficient PFC controller based on storable reference current rebuilt strategy

This paper describes a digital controller used as power factor correction rectifiers (PFC) which can be implemented by universal chips to achieve the unity power factor instead of application specific integrated circuit (ASIC). The main novelty of this method is that discrete data of sinusoidal wave can be stored in the controller, using this data the system can be simplified by cutting down the number of sampling circuits, and the discrete data provides sinusoidal reference current and sinusoidal input current even if the input voltage is distorted. Discussion of the hardware implementation is given, followed by the analysis of robustness and efficiency in this method. The performance of this PFC controller is demonstrated on a 100 KHz, 500W BOOST-bases PFC experimental prototype.