计算技术与自动化2023，Vol.42Issue(4)：1-8,8.DOI:10.16339/j.cnki.jsjsyzdh.202304001
基于改进模糊PI控制的双有源桥DC-DC变换器
Dual Active Bridge DC-DC Converter Based on Improved Fuzzy PI Control
摘要
Abstract
In DC microgrid,the dynamic response speed of DC voltage is slow due to the disturbance of DC load.At the same time,DC voltage overshoot will be caused when load switching.Improved fuzzy PI control is adopted and applied to the dual active bridge DC-DC converter of energy storage unit in the DC microgrid.Firstly,a pre-processing link is added to the existing fuzzy PI control,which judges and tracks the error of the DC voltage in time,so that the DC bus voltage quickly reaches the reference value,and the dynamic response speed of the DC voltage is improved.Secondly,the rule base of the ex-isting fuzzy PI control algorithm for the lack of precision is anazed in the parameter adjustment process,and an improved fuzzy PI rule table is obtained by modifying it to reduce the overshoot of the DC voltage.Finally,the improved fuzzy PI con-trol is simulated and verified.The simulation results show that for the existing PI controller and fuzzy PI controller,the im-proved fuzzy PI controller has significantly improved steady-state response speed,overshoot and anti-interference perform-ance,and improved the voltage quality of DC bus.关键词
直流微电网/双有源桥DC-DC变换器/改进的模糊PI控制/模糊规则表/稳态响应Key words
DC microgrid/dual active bridge DC-DC converter/improved fuzzy PI control/fuzzy rule base/steady state response分类
信息技术与安全科学引用本文复制引用
陈桃..基于改进模糊PI控制的双有源桥DC-DC变换器[J].计算技术与自动化,2023,42(4):1-8,8.基金项目
南京工程学院研究生科技创新项目(TB202217057) （TB202217057）
