APF系统谐波电流检测方法的研究  

Research on Harmonic Current Detection Method of APF System

作　　者：李磊[1] LI Lei(Xi’an Aeronautical Polytechnic Institute,Xi’an 710089,China)

机构地区：[1]西安航空职业技术学院,陕西西安710089

出　　处：《机械与电子》2020年第9期17-20,共4页Machinery & Electronics

基　　金：2019年度西安航空职业技术学院院级科研计划项目(19XHZK-013)。

摘　　要：将传统的FBD法和ip-iq法有机结合,设计了一种有源电力滤波系统谐波电流检测方法。系统前一部分为了高效获取有功和无功的等效电导,将传统FBD法进行改进,省掉了对零序电流的分离,利用三相电流直接完成计算。基于前一部分的计算,系统后一部分则是将ip-iq法进行了改进。将前一部分计算获得的有功和无功的等效电导利用线性转换得到有功和无功电流,再利用改进移动平均值法获得直流电流,同时对零轴电流实行独立控制,以实现对直流侧上下电容电压均衡控制。最后完成了仿真实验,结果表明:改进的谐波检测方法相较于传统的算法,显著提高了APF系统的静态及动态响应特性,从而证实了该算法的有效性。Combining the traditional FBD method and the traditional ip-iq method,a new harmonic current detecting way for active power filter system was designed.In the first part of the system,in order to obtain the equivalent conductance of active and reactive power efficiently,the conventional FBD method was improved,which eliminates the separation of zero sequence current and threephase current is used to complete the calculation directly.Based on the former part of the calculation,the latter part of the system was to improve the ip-iq method.The equivalent conductance of the active and reactive power calculated in the former part was used to obtain the active and reactive current by linear conversion,and then the DC current was obtained by the improved moving average method.At the same time,the zero axis current was controlled separately to realize the voltage sharing control of the upper and lower capacitance of the DC side.Finally,the simulation experiment was completed.The results show that the improved harmonic detection method significantly improves the static and dynamic response characteristics of APF system compared with the traditional algorithm,which proves the effectiveness of the algorithm.

关 键 词：APF系统 FBD法 IP-IQ法 谐波电流 

分 类 号：TN713[电子电信—电路与系统]