Research Of Control Strategy On The Three-phase High Power Factor Rectifier

The more application of power electronics equipment,the more harmonic pollution, since eliminating harmonic pollution and improving power factor are the quite important task in the field of power electronics. The conventional converters produce harmonic problem in power system. While three-phase converters can provide constant dc bus voltage and get low harmonic distortion of input current. It also has line power feedback capability. Three-phase converters have been as active research topic in power electronics recently.Set up models of converter is a important process to research on the characteristic and strategy of converter. We can set up different models by different ways. Different system control strategies and different system dynamic, static capability can be got base on different mathematical model. So there is a important significance to set up models. First models are set up in ABC coordinate,αβcoordinate, and dq coordinate, respectively. Then paper studys the hysteresis current control, the feasibility of model established is validated by MATLAB simulation. Next, the main work of this paper focus on present a novel simply control algorithm for SVPWM scheme based on the research of conventional SVPWM control scheme. Aimed at the requirement of the control scheme, several important parameters are analyzed and calculate.