摘要
谐波功率均分效果严重影响了非线性负载供电的逆变器并联系统的性能。为此,提出了一种虚拟阻抗算法抵消线路阻抗间的差异,实现基波无功功率和谐波功率的高精度均分。试验结果表明,提出的基于虚拟阻抗的谐波功率均分策略可以有效提高基波无功和谐波功率均分精度,同时保证公共耦合点的电能质量,确保逆变器并联系统的工作性能。
The harmonic power sharing effect seriously affects the performance of the inverter parallel system powered by nonlinear loads.To this end,a virtual impedance algorithm was proposed to offset the difference between line impedances and achieve high-precision equalization of fundamental reactive power and harmonic power.The experimental results show that the proposed harmonic power sharing strategy based on virtual impedance can effectively improve the precision of fundamental reactive power and harmonic power sharing,and at the same time ensure the power quality of the common coupling point and the working performance of the inverter parallel system.
作者
惠琪
吕晓荣
滕禹
刘鸿鹏
陈继开
Hui Qi;Lyu Xiaorong;Teng Yu;Liu Hongpeng;Chen Jikai(NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing Jiangsu 211106,China;Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology under Ministry of Education,School of Electrical Engineering,Northeast Electric Power University,Jilin Jilin 132012,China)
出处
《电气自动化》
2023年第6期27-30,共4页
Electrical Automation
基金
国家自然科学基金资助项目(52077030)
国家电网有限公司科技项目(52094021N00S)。
关键词
并联逆变器系统
下垂控制
非线性负载
谐波功率均分
虚拟阻抗
parallel inverter system
droop control
nonlinear loads
harmonic power sharing
virtual impedance
