中国电机工程学报2017，Vol.37Issue(23)：6981-6987,7.DOI:10.13334/j.0258-8013.pcsee.162639
不平衡电压下并网逆变器的功率波动抑制与电流平衡协调控制方法
Coordinate Control of Power Fluctuation Suppression and Current Balance Under Unbalanced Voltage Conditions
摘要
Abstract
The output power fluctuation and current quality of the grid-connected inverter under the unbalanced voltage environment are opposite to each other.First,the paper deduces the internal connection between the power oscillations and the current quality under unbalanced grid faults,the key factors that affect power fluctuation and current quality were analyzed.Then,a flexible power control strategy in stationary reference frame was proposed,and the power oscillations and the current quality can be controlled flexibly by changing the harmonic components in the output current.The proposed control strategy is convenient to realize without the need for positive/negative sequence extraction calculation,low pass filter or notch filter.Finally,the correctness of the proposed power control strategy is verified by simulation and experiment.关键词
并网逆变器/功率控制/电流质量/电压不平衡/协调控制Key words
grid-connected inverter/power control/current quality/voltage unbalance/coordinate control分类
信息技术与安全科学引用本文复制引用
王逸超,欧名勇,陈燕东,陈仲伟,肖振锋,徐志强..不平衡电压下并网逆变器的功率波动抑制与电流平衡协调控制方法[J].中国电机工程学报,2017,37(23):6981-6987,7.基金项目
国家自然科学基金项目(51237003,51477045).Project Supported by National Natural Science Foundation of China (51237003,51477045). （51237003,51477045）
