多逆变器并联的谐波功率均分下垂控制方法  

A Harmonic Power Sharing Droop Control Method for Intelligent Parallel Inverters

作　　者：郭伟文 韩芳墨 彭云建[2] 王业腾 仲兆峰 GUO Wei-wen;HAN Fang-mo;PENG Yun-jian;WANG Ye-teng;ZHONG Zhao-feng(Hitachi Building Technology(Guangzhou)Co LTD,Guangzhou 510640,China;School of Automation Science and Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]日立楼宇技术(广州)有限公司,广东广州510760 [2]华南理工大学自动化科学与工程学院,广东广州510640

出　　处：《五邑大学学报（自然科学版）》2021年第1期67-73,共7页Journal of Wuyi University(Natural Science Edition)

基　　金：广东省科技计划项目(2015A010106003)。

摘　　要：针对不同线路阻抗的多逆变器并联的谐波功率均分问题,本文提出了一类改进的谐波功率均分下垂控制方法.该方法主要利用逆变器瞬时功率理论建立了谐波功率计算模型,基于传统谐波功率下垂控制框架,将谐波功率模型的滤波电容电压采用下垂控制输出的基波参考电压替代,控制器参考电流值的计算引入线路阻抗压降补偿.通过两相同容量逆变器并联运行的模拟实验,对所提方法进行了验证.仿真结果表明,本文方法可以提高并联逆变器谐波功率均分的精度,有利于改善并联逆变器输出的电能质量.Aiming at the problem of harmonic power sharing in multiple parallel inverters with different line impedances,an improved harmonic power sharing droop control method is proposed in this paper.Based on the traditional harmonic power droop control framework,the filter capacitance voltage of the harmonic power model is replaced by the fundamental wave reference voltage of the droop control output.A line impedance voltage drop compensation is introduced into the calculation of the controller’s reference current value.The proposed method is verified through a simulation experiment of parallel operation of two inverters with the same capacity.Simulation results show that the method proposed in this paper can improve the precision of harmonic power averaging of parallel inverters and improve the power quality of output of parallel inverters.

关 键 词：并联逆变器 谐波功率 下垂控制 谐波电压补偿 瞬时功率 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]