单相并联型APF双环控制技术的仿真研究

分析了系统谐波的危害,提出了有源电力滤波器抑制谐波的有效性,以单相并联型有源电力滤波器为背景,介绍了其工作原理并建立数学模型。详细分析了基于电压外环电流内环的单相并联型有源电力滤波器双环控制系统,并给出了电压外环以及电流内环PI控制参数的具体设计过程。最后通过MATLAB仿真对所设计的系统控制参数进行了验证。仿真结果表明,该种基于电压外环电流内环的双环PI控制器的单相并联型有源电力滤波器能保证直流母线电压的稳定,并对中低频带的谐波进行有效的补偿。

Simulation of Single-Phase Shunt APF with Loop Control

This paper first analyzed the harm of harmonics,pointed out the effectiveness of the active power filter used to inhibit harmonics.Using a single-phase parallel active power fliter as a example,it also introduced how it works and established its mathematical model.It then analyzed a double loop control system of the single-phase parallel active power fliter based on a model of the inner loop of voltage combining with its outer loop of current in detail,and described the specific design process of the parameter PI of inner loop of voltage and the outer loop of current.It finally tested the parameters designed using the simulink of matlab.The results show that the double loop control system of the single-phase parallel active power fliter based on a model of the inner loop of voltage combining with its outer loop of current can ensure the stability of the DC bus voltage and compensate the harmonics of low and medium frequency band effectively.