电气传动2026，Vol.56Issue(1)：21-30,40,11.DOI:10.19457/j.1001-2095.dqcd26282
并联逆变器的自适应无功均分的改进虚拟阻抗策略
Improved Virtual Impedance Strategy for Adaptive Reactive Power Equalisation in Shunt Inverters
摘要
Abstract
An improved virtual impedance strategy with adaptive reactive power equalisation and bus voltage compensation functions was proposed to address the reactive power equalisation and bus voltage drop issues in parallel inverters in island microgrids.By introducing an enhanced power decoupling strategy based on a second-order generalized integrator(SOGI),the harmonic virtual voltage drop problem under nonlinear loads was solved,and the tracking performance of the PI controller was improved.Then,an adaptive virtual voltage drop correction term was introduced to eliminate the influence of line impedance,and a method for selecting the virtual voltage drop correction coefficient was proposed.Finally,the effectiveness of the proposed strategy was verified through simulations,demonstrating improved reactive power equalisation precision and bus voltage compensation in complex operating conditions.关键词
并联逆变器/虚拟阻抗/无功均分/电压补偿Key words
shunt inverter/virtual impedance/reactive power equalisation/voltage compensation分类
信息技术与安全科学引用本文复制引用
冯侃,张乐桢,周龙,侯焱伦,牛炜,保承家..并联逆变器的自适应无功均分的改进虚拟阻抗策略[J].电气传动,2026,56(1):21-30,40,11.基金项目
国家电网有限公司科技项目(522703230009) （522703230009）
国家自然科学基金(U24A20148) （U24A20148）
