微网逆变器并联谐波抑制研究  

Research on Harmonic Circulation Suppression of Micro-network Inverter

作　　者：张海霞[1] 张强[1] 王庆磊[1] 徐红城 

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《科技视界》2017年第11期104-104,共1页Science & Technology Vision

摘　　要：随着微网技术日趋成熟,逆变器并联在微网中的应用越来越广泛,但逆变器并联将带来一些问题,如普通负载时当两逆变器电压不等造成系统环流、带非线性负载时将产生一系列谐波。本文以两逆变器并联为例分析了逆变器并联系统谐波环流产生的原因,针对逆变器并联整流型非线性负载的情形,利用下垂特性将谐波功率环引入调节器,采用实时的谐波功率计算方法从总的视在功率中分出谐波功率,通过均分谐波功率来抑制谐波环流。仿真表明,所提方法能更好地抑制谐波环流。With the maturation of microgrid technology,the application of two inverters in microgrid is more and more extensive.It is very meaningful to solve the problem of parallel connection of microgrid.In this paper,the causes of the harmonic circulation in the parallel system of the inverter are analyzed.In view of the case of the parallel rectifier nonlinear load,the harmonic power loop is introduced into the regulator,and the multifeedback parallel control strategy is proposed. The harmonic power calculation method divides the harmonic power from the total apparent power and suppresses the harmonic current by reducing the harmonic power.The simulation shows that the new harmonic power equalization can better suppress the harmonic circulation.

关 键 词：逆变器并联 谐波环流 下垂控制 谐波功率均分 

分 类 号：TM714.3[电气工程—电力系统及自动化]