摘要
为了改善三相逆变器输出的谐波性能,提高系统的稳态性能和鲁棒性,在传统准比例谐振(PR)控制器的基础上,提出了基于线性二次型(LQR)最优控制的三相逆变器控制方法。首先建立了三相逆变器数学模型,然后基于LQR最优控制算法,对状态反馈和输入前馈进行了参数优化设计,提高了三相逆变器带多样化负载的能力。仿真及实验结果表明:三相逆变器采用LQR最优控制方法比采用传统的准PR控制方法能够更好地适应负载变化带来的不良影响,使系统具有良好的谐波性能,动、静态性能和鲁棒性。
In order to improve the output harmonic performance of three-phase inverter and improve the steady-state performance and robustness of the system,a control method of three-phase inverter based on linear quadratic(LQR)optimal control is proposed based on the traditional quasi-proportional resonant(PR)controller.Firstly,the mathematical model of three-phase inverter is established,and then the parameters of state feedback and input feedforward are optimized based on the linear quadratic optimal control algorithm,which improves the capability of three-phase inverter with diversified loads.The simulation and experimental results show that the LQR optimal control method of threephase inverter can better adapt to the adverse effects caused by load changes than the traditional quasi-PR control method,so that the system has good harmonic performance,dynamic and static performance and robustness.
作者
雷康
邵英
张银锋
孙盼
LEI Kang;SHAO Ying;ZHANG Yin-feng;SUN Pan(Naval University of Engineering,Wuhan 430300,China)
出处
《电力电子技术》
CSCD
北大核心
2022年第3期93-96,共4页
Power Electronics
基金
国家自然科学基金青年计划(52007195)
湖北省自然科学基金面上项目(29CFB608)。
