单相有源功率因数校正器直接储能控制的研究

对于传统的单相有源功率因数校正器（APFC）,一般采用电压外环、电流内环的双闭环控制结构,直接控制输出电容电压和中间电感电流,能够获得良好的控制效果。将直接控制电容电压和电感电流的控制策略引申为直接控制电容电压平方和电感电流平方,即无源器件的直接储能控制,对传统有桥结构的单相APFC进行理论分析、仿真分析和试验验证。结果表明,通过直接控制电容电压平方和电感电流平方,单相APFC能够获得满意的动态和静态特性。该方法可以推广应用到包含有控制电容电压和电感电流的其他类型电力电子变换器。

Research on Single Phase Active Power Factor Corrector Using Direct Energy Storage Control

For the traditional single-phase active power factor corrector（ APFC）,the double closed loop control structure composed of voltage outer loop and current inner loop is employed normally,where the output DC voltage and intermediate inductor current are regulated directly with satisfactory control results. In this paper,the aforesaid control strategy was changed to control directly squared output DC voltage and squared inductor current,namely to control the passive component＇s energy storage. Then the single-phase APFC with traditional bridged structure was analyzed theoretically,simulated by means of MATLAB /Simulink,and verified experimentally. The obtained results show that the single-phase APFC can yield satisfying dynamic and static characteristics. The control method can be introduced to other power electronic converters in which the capacitor voltage and inductor current should be controlled.