基于离散滑模和鲁棒控制的双闭环光伏并网控制

Double Closed-loop Photovoltaic Grid Connection Control Based on DSMC and RSC

为了提高光伏发电效率和电能质量,减少电能质量扰动,在传统的双闭环控制理论基础上,分别基于离散滑模控制和鲁棒伺服控制设计电流内环和电压外环,实现电压和电流的双闭环调节。对离散滑模控制和鲁棒伺服控制进行理论分析,并利用MATLAB/Simulink进行建模仿真,通过仿真结果验证所提出控制策略的可靠性和有效性,将对实际运行电网提供理论支持和帮助。

In order to improve the efficiency of photovoltaic generation and power quality and reduce power quality disturbance, on the basis of traditional double closed-loop control theory, an inner current loop and an outer voltage loop are designed on the basis of discrete sliding mode control （ DSMC ） and robust servo control （ RSC ） respectively to achieve double closed loop regulation of voltage and current. DSMC and RSC are analyzed theoretically, and model establishment and simulation is completed via MATLAB / Simulink. Simulation results verify the reliability and effectiveness of the proposed control strategy. This control strategy will provide theoretical support and help to the actual operation of power grids.