混合有源滤波器无源网络的内部电磁兼容性分析  

ELECTROMAGNETIC COMPATIBILITY ANALYSIS ON THE PASSIVE NETWORK OF A HYBRID ACTIVE POWER FILTER

作　　者：李志勇[1] 罗安[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南省长沙市410075

出　　处：《电力系统自动化》2004年第16期72-74,82,共4页Automation of Electric Power Systems

基　　金："十五"国家科技攻关资助项目(2002BA218C)。

摘　　要：首先建立了混合有源滤波器无源网络的内部电磁干扰模型,根据三相电流和磁感应压降之间的矢量关系,推导出无源网络等效电抗和等效电阻的数学表达式,以及品质因数和谐振带宽受电磁干扰影响的变化规律。具体分析了三相电抗器摆放位置和间距对上述性能参数的作用特点及强度.指出对称摆放三相电抗器是优化混合有源滤波器无源网络内部电磁兼容性的有效措施。实践验证了文中的电磁兼容性矢量分析方法和结论的有效性和实用性。Following a modeling of the interior electromagnetic interference of the hybrid active power filter, mathematical expressions each for the equivalent reactance and equivalent resistance as well as the law of variation of the passive network's quality factor and band-pass width under different topological structures are derived according to the vectorial relationship between the three-phase current and magnetic induction voltage of the passive network. The operating characteristics and intension of the location and interval of the three-phase reactor on the above performance parameters are analyzed in detail. It is pointed out that placing the three-phase reactor symmetrically is an effective measure to optimize the electromagnetic compatibility (EMC) of the hybrid active power filter's passive network. The effectiveness and practicability of the method and conclusion about the EMC vector analysis are proved in practice.

关 键 词：混合有源滤波器 无源网络 电磁兼容 品质因数 

分 类 号：TN713[电子电信—电路与系统]