摘要
为了提高并网逆变器有限集模型预测控制(FCS-MPC)方法中的稳定性问题,研究了基于Lyaponov准则的并网逆变器有限集模型预测控制大信号稳定性方法。首先建立数学模型,分析参数变化对预测误差的影响和大扰动导致的稳定性问题,接着提出采用虚拟电压矢量的Lyapunov控制器的有限集模型预测控制稳定性策略。利用Lyapunov控制器并结合考虑稳定性约束的目标函数增强系统抗扰动能力,虚拟电压矢量满足Lyapunov稳定性需求,同时改善控制性能,并设计有限集选取策略减少计算量。仿真和实验验证了所提方法在扰动及参数变化情况下控制性能和抗干扰能力。
In order to improve the stability problem in finite set model predictive control(FCS-MPC)method of grid-connected inverters,a large-signal stability method based on Lyaponov criterion for finite set model predictive control of grid-connected inverters was studied.A mathematical model was first established to analyze the influence of parameter changes on prediction errors and the stability problems caused by large disturbances.Then the finite set model prediction and control stability strategy of Lyapunov controller with virtual voltage vector was proposed.The Lyapunov controller combined with the objective function considering stability constraints was used to enhance the anti-disturbance capability of the system.Using virtual voltage vector meeting the Lyapunov stability requirements,the control performance was improved,and a finite set selection strategy was designed to reduce the amount of calculation.Simulation and experiments were carried out to verify the control performance and anti-interference ability of the proposed method under disturbance and parameter changes,and its control effect was analyzed under normal operating conditions.
作者
唐圣学
乔乃珍
勾泽
孙志国
张文煜
TANG Sheng-xue;QIAO Nai-zhen;GOU Ze;SUN Zhi-guo;ZHANG Wen-yu(Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;State Grid Jibei Zhangjiakou Wind and Solar Energy Storage and Transportation New Energy Co.,Ltd,Zhangjiakou 075000,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2023年第3期56-68,共13页
Electric Machines and Control
基金
河北省自然科学基金(E2021202068)
河北省自然科学基金(E2019202481)。
