基于FO-PI控制器的直流微网母线电压控制策略  

Bus Voltage Control Strategy for DC Microgrid Based on FO-PI Controller

作　　者：谭超[1] 乐周美 杨哲 龚晓辉 TAN Chao;YUE Zhoumei;YANG Zhe;GONG Xiaohui(College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,Hubei,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电气传动》2020年第5期96-101,共6页Electric Drive

摘　　要：为改善直流微电网母线电压稳定性及动态性能,提出一种基于自适应参数整定的FO-PI控制器控制直流母线电压方法。该方法在传统PI控制策略的基础上引入具有多参数可调的FO-PI控制器,并将带有自适应权重策略的粒子群算法运用于FO-PI控制器,从而解决控制器在具有多个参数时不可同时调节这些参数的问题。让直流微电网电压控制系统达到更优的可控性及灵活度。实验结果表明,所提出的控制策略在不增加系统成本的同时,能够使母线电压抗负载扰动能力更强,而且其整体性能优于传统控制方法。In order to improve the stability of the bus voltage and the dynamic performance of DC microgrid,a DC bus voltage control strategy based on the parameter self-tuning fractional-order PI(FO-PI)controller was proposed. The FO-PI controller with multi-parameter adjustment on the bases of traditional PI control strategy was introduced.Meanwhile,the particle swarm optimization algorithm with adaptive weighting strategy was applied to FO-PI controller to solve the problem that the multi-parameter of the controller could not be adjust at the same time. The above methods could make the voltage control system more controllable and flexible. The results show that the proposed control strategy can improve the anti-load-disturbance ability of the bus voltage without increasing the cost of the system,and its overall performance is better than the traditional control method.

关 键 词：直流微电网 电压控制 fractional-order PI(FO-PI)控制器 粒子群算法 

分 类 号：TM28[一般工业技术—材料科学与工程]