一种新型注入式混合有源电力滤波器

针对传统的注入式混合型有源电力滤波器(IHAPF)的有源部分与基波谐振支路间会产生很大基波环流的问题,本文提出了一种新型注入式混合型有源电力滤波器拓扑结构以提高系统的安全性。本文首先分析了IHAPF系统基波环流产生的机理,并提出了能有效抑制基波环流的新型注入式混合型有源电力滤波器拓扑结构;然后,从串联谐振支路谐波分压和并联谐振支路谐波分流两个方面分析了新型结构的优越性。最后,仿真与物理实验结果表明,该结构不仅能够有效地解决中高压系统中大容量无功和谐波综合治理的难题,还可以抑制传统注入式结构中存在的基波环流,大幅度提高了装置的安全可靠性。

A Novel Injection Type Hybrid Active Power Filter

As the additional injection type hybrid active power filter(IHAPF) may exist fundamental circulation between the active part and fundamental harmonic branch,a novel topology of injection type hybrid active power filter is proposed to enhance the safety of IHAPF in the paper.Firstly,this paper discusses the principle of fundamental circulation,and proposes a novel topological structure of IHAPF which can improve the safety of system.Secondly,this paper discusses the advantage of the novel structure on harmonic voltage of series resonant subcircuit and harmonic current of parallel resonant subcircuit.Finally,Simulation and experimental results indicate that the structure can effectly solve the problem of great reactive power compensation and harmonic suppression in high voltage system,as well as fundamental circulation suppression in traditional injected circuit structure.Therefore the safe reliability is greatly improved.