Research On Advanced Control Algorithms In DSP Control For PFC System

The DSP control for power factor correction is one of the latest research direction in the domain of power supplies. But peoples always use the traditional PI corrector for the regulation section in most reality application no matter for the analogical or numeric control.This paper will focus on the influence of the advanced algorithms for the PFC system and compare their performances with the traditional PI corrector. Most essentially it introduces tow control algorithms—"optimal control of linearity quadratic with the internal stability"and Predictive control.This thesis mainly includes three parts, which are described in detail in chapter 2,3, chapter 4, and chapter 5 respectively.The chapter 2 introduces several notions for the power factor correction. Then after presenting the traditional topology of PFC control system ,it introduces our topology and model of the control system. The chapter 3 focus on the algorithm of optimal control of linearity quadratic with the internal stability . In the detail ,it introduces the principle of the Kalman filter and analyze its stability. Then , some main notion for the LQ optimal control and its stability. At last section , it introduces the general predictive control theory.The chapter 4 , after the constitution of the different corrector, compares the simulation results with the PID corrector.The chapter 5 focus in the DSP chips .Mainly introduce the organs used in the PFC control system .And it analyzes the function order in the time base.