西安理工大学学报2017，Vol.33Issue(4)：396-401,6.DOI:10.19322/j.cnki.issn.1006-4710.2017.04.004
非线性负载下单相逆变电源电压波形控制策略
Voltage control strategy for single-phase inverter with nonlinear load
摘要
Abstract
There are a lot of nonlinear loads in the microgrid(MG),which causes harmonic pollution to the common AC bus voltage.So it is necessary to design the reasonable voltage controller for each distributed generation to improve the voltage quality.The quasi-proportional complex integral (QPCI) controller with frequency bandwidth is designed in this paper with multiple QPCI controllers adopted to track fundamental,3rd and 5th harmonic signals with zero error at these frequencies in this paper.Also,the load current feed-forward control at low and middle frequency bands is introduced to decrease the harmonic voltage drop,which can improve the voltage quality of the distributed inverter.Simulation and experiments are carried out with the voltage control strategies including the proportional integral (PI) controller and multiple QPCI controllers with feed-forward load respectively.The results show that the proposed control strategy has the ability of track the AC signals with zero steady-state error tracking and anti-interference capability.Meanwhile the harmonic current can be suppressed effectively,with the output voltage quality of the inverter improved.关键词
准比例复数积分控制器/逆变电源/电压质量/谐波抑制Key words
quasi-proportional complex integral controller/inverter supply/voltage quality/harmonic suppression分类
信息技术与安全科学引用本文复制引用
任碧莹,孙凯歌,孙向东..非线性负载下单相逆变电源电压波形控制策略[J].西安理工大学学报,2017,33(4):396-401,6.基金项目
国家自然科学基金资助项目(51477139) （51477139）
陕西省自然科学基金资助项目(2017JM5075) （2017JM5075）
