Abstract：In order to solve the problem of output voltage distortion in off-grid inverter with nonlinear load, a new compound control strategy is proposed in this paper, which is based on six-fold repetitive controller and optimal preview control. The feedback coefficients of state variables, repetitive controllers and instructions can be solved by given a control weighting matrix and output weighting matrix, and the system stability can be guaranteed. According to the state space equation of the controlled object and the six-fold frequency repetitive controller, the extended error equation is designed. The parameter design problem of the repetitive controller is transformed into a linear quadratic problem, and the control parameters are optimally adjusted through the Riccati equation. Finally, a 10kV·A prototype is built to verify the effectiveness of the proposed method.
兰梓冉, 郝瑞祥, 角宏林, 游小杰. 基于重复控制和状态反馈的三相逆变器最优预见控制[J]. 电工技术学报, 2022, 37(6): 1473-1481.
Lan Ziran, Hao Ruixiang, Jiao Honglin, You Xiaojie. Optimal Preview Control of Three-Phase Inverter Based on Repetitive Control and State-Feedback. Transactions of China Electrotechnical Society, 2022, 37(6): 1473-1481.
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2022, Vol. 37 
