电工技术学报2017，Vol.32Issue(8)：229-236,8.
基于复功率的电网电压不平衡条件下并网逆变器控制策略
Complex Power Based Control Strategy of Grid-Connected Inverter under Unbalanced Grid Voltage Conditions
摘要
Abstract
The fault-ride-through issue for the grid-connected inverter is investigated under unbalanced grid voltage conditions.A new complex power based stationary-frame control strategy is proposed in this paper.Different from the traditional synchronous-frame control methods,our proposal is able to control six variables by combining the oscillating components of active and reactive powers.The coordinate control with the current-limiting capability is achieved with two adjustable variables by integrating the various control objectives.The proposal ensures the continuous adjustment of active and reactive powers,while the grid current operates within the rated value under unbalanced grid voltage conditions.Therefore,the system reliability is enhanced.Finally,the experimental results verify the effectiveness of the proposed solution.关键词
并网逆变器/电网电压不平衡/功率控制/限流功能Key words
Grid-connected inverter/unbalanced grid voltage/power control/current-limiting function分类
信息技术与安全科学引用本文复制引用
伞国成,漆汉宏,魏艳君,张纯江,郭小强..基于复功率的电网电压不平衡条件下并网逆变器控制策略[J].电工技术学报,2017,32(8):229-236,8.基金项目
国家自然科学基金(51477148),中国博士后科学基金(2015T80230)和河北省引进留学人员(CL201622)资助项目. （51477148）
