非整数次谐波对混合型有源滤波器性能影响及解决方法  

Influence of Non-integer Harmonics on HAPF and Resolution

作　　者：赵伟[1] 罗安[1] 盘宏斌[1] 邓霞[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《中国电机工程学报》2008年第12期73-78,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(60474041);国家863高技术基金项目(2004AA001032)~~

摘　　要：以目前有实用先例的注入式混合有源滤波器为例分析了电网中存在的非整数次谐波对混合型有源滤波器(hybrid active power filter,HAPF)的补偿性能和安全运行造成的影响,针对系统采用的谐波检测环节对非整数次谐波的不正确检测导致滤波器性能降低并致使直流侧电压波动的问题。文中提出了一种稳定直流侧电压的方法和两种针对不同电网谐波含量情况的谐波检测方法,从实用性上看基于自适应噪声消除原理的谐波检测方法适用于整数次和非整数次谐波同时存在的情况,仿真和实验结果证明了这种方法能够准确的检测出电网中的各次谐波。文中所得的结论同样可以推广应用于其它结构的并联混合型有源滤波装置中,为其在含有非整数次谐波电网中的安全运行提供了有益的指导。Taking a new injection type hybrid active power filter as example, this paper analyzes the influence of non-integer harmonics on hybrid active power filter （HAPF）, the harmonic detection method adopted in the system can not detect the non-integer harmonic accurately either amplitude or phase and consequently results in a voltage ripple in DC-side. To solve the problem, a method to stabilize the DC-side voltage and two harmonic detection methods are put forward for power system containing various harmonics. From the practical viewpoint, the detection method based on self-adaptive noise countervailing is suit to the system which contains both integer and non-integer harmonics. Experiment and emulation results show the validity of the method. The conclusion is also helpful to other kinds of APF when both integer and non-integer harmonics both exist in the power system.

关 键 词：混合有源滤波器 非整数次谐波 直流侧电压 谐波检测 自适应噪声对消技术 

分 类 号：TM711[电气工程—电力系统及自动化]