基于基波磁通补偿和二次侧单调谐技术的无源滤波方法研究  

Study on new passive filtering method based on fundamental magnetic flux compensation and secondary single-tuned resonance

作　　者：韩素敏[1] 谢东垒[1] 张伟[1] 康润生[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《电力系统保护与控制》2012年第6期46-49,56,共5页Power System Protection and Control

基　　金：河南省重点科技攻关项目(0623021700);河南省教育厅自然科学研究项目(2011A470004)

摘　　要：针对电力电子装置谐波源,提出基于基波磁通补偿和二次侧单调谐技术的无源滤波新方法。该方法在谐波源前串联变压器,二次侧以基波单调谐环节作为负载,该环节使得基波电流无衰减通过,而对于谐波电流呈现高阻抗,从而使得变压器一次、二次侧只含有基波电流和谐波电压,电源侧基本不含谐波成分,达到滤除谐波的目的。建立了系统模型并利用Matlab仿真对比分析,结果表明,此无源滤波方法不仅滤除谐波电流效果明显,而且能够有效滤除谐波电压。A new passive filtering method is proposed based on the principle of fundamental magnetic flux compensation and secondary single-tuned resonance for harmonic sources such as power electronic devices. In this method, the series transformer is connected before the harmonic source, and the fundamental single-tuned resonance link is taken as the load to the secondary side. The link makes the fundamental current go with no attenuation, and presents high impedance for harmonic currents, which makes the primary and secondary sides contain only fundamental current and harmonic voltage, and power supply side basically has no harmonic components to achieve the goal of filtering. A system model is analyzed and simulated using Matlab, and it is showed that the passive filtering method not only obviously eliminates harmonic current but also effectively filters out harmonic voltage.

关 键 词：基波磁通补偿 单调谐 无源滤波 串联变压器 谐波 

分 类 号：TM711[电气工程—电力系统及自动化]