基于重复控制和状态反馈的三相逆变器最优预见控制  

Optimal Preview Control of Three-Phase Inverter Based on Repetitive Control and State-Feedback

作　　者：兰梓冉 郝瑞祥[1] 角宏林 游小杰[1] Lan Ziran;Hao Ruixiang;Jiao Honglin;You Xiaojie(School of Electrical Engineering Beijing Jiaotong University,Beijing 100044 China)

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电工技术学报》2022年第6期1473-1481,共9页Transactions of China Electrotechnical Society

摘　　要：针对离网逆变器带非线性负载时输出电压存在畸变问题,该文提出一种基于六倍频重复控制器与最优预见控制的复合控制策略,将六倍频重复控制器具有的无差调节和快速调节的优势与最优控制的线性二次型设计方法相结合,仅给定控制加权矩阵和输出加权系数就可求解出状态变量、重复控制器和指令的反馈系数,并保证系统稳定。根据被控对象的状态空间方程和六倍频重复控制器,设计扩大误差方程,将重复控制器参数设计问题转化为线性二次型问题,并通过黎卡提方程对控制参数进行最优整定。最后,搭建一台容量为10kV·A的样机,验证该文所提方法的有效性。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.

关 键 词：重复控制 最优预见控制 离网逆变器 非线性负载 

分 类 号：TM464[电气工程—电器]