单独注入式混合型有源电力滤波器的研究

Study on Hybrid Active Power Filter with Single Injection Circuit

在分析单独注入式混合型有源电力滤波器(Hybrid Active Power Filter with Injection Circuit,简称IHAPF)基本原理与控制策略的基础上,得出基于检测负载谐波电流的控制策略在工程应用上具有优势的结论。建立了基于检测负载谐波电流控制策略的IHAPF的数学模型,根据该模型得出系统的传递函数,并通过稳定判据得到了使系统保持稳定的控制器参数取值范围。实验结果表明,采用基于检测负载谐波电流的控制策略时IHAPF能达到理想的滤波效果,并且能确保系统安全稳定运行。

On the basis of analyzing the principle and control strategy, of hybrid active power filter with single injection cireuit,the control strategy is deduced,whieh based on detecting load harmonic cun＇ent and has advantages in engineering applieation.The mathematical model of IHAPF based on mentioned control method is set up, transfer function of the system is obtained aceording to the model,and the value range of controller parameters which can keep system steady is obtained by stability criterion.The experiment shows that the IHAPF can obtain an ideal harmonic elimination effect when the mentioned control strategy is adopted, it also can ensure the safe and steady operation of the system.