湖南大学学报（自然科学版）2024，Vol.51Issue(2)：12-21,10.DOI:10.16339/j.cnki.hdxbzkb.2024222
基于有限时间观测器的光储系统母线电压互补滑模控制
Finite-time Observer-based Sliding Mode Control of Bus Voltage Complementarity in Optical Storage Systems
摘要
Abstract
In view of the fact that the hybrid energy storage systems of optical storage and DC microgrids are susceptible to intermittent energy input,random load perturbations,and power flow switching,which may cause the problems of bus voltage fluctuations and system power instability,a complementary sliding mode control strategy based on a finite-time observer is proposed.First,according to the high-low frequency characteristics of the hybrid energy storage elements,the current equivalent distribution of the system differential power is carried out.Then,a finite-time dilated state observer is designed to observe the total disturbance to the system,and the disturbance observations are fed into the complementary sliding-mode controller as feedforward terms to compensate for the system disturbance,ensuring that the system state reaches convergence in finite time,improving the fast and anti-disturbance performance of the system,and proving the stability of the control system according to Lyapunov theory.Finally,based on the MATLAB simulation platform,the simulation results show that the proposed control has faster response speed and better immunity to disturbances than the traditional control strategy.关键词
光储直流微网/混合储能/母线电压/有限时间观测器/互补滑模Key words
optical storage DC microgrid/hybrid energy storage/busbar voltage/finite-time observer/comple-mentary sliding mode分类
动力与电气工程引用本文复制引用
皇金锋,杨振宇..基于有限时间观测器的光储系统母线电压互补滑模控制[J].湖南大学学报（自然科学版）,2024,51(2):12-21,10.基金项目
陕西省自然科学基础研究项目(2023-JC-YB-442),Natural Science Basic Research Project of Shaanxi Province(2023-JC-YB-442) （2023-JC-YB-442）
