摘要
针对三相PWM整流器电流环的特点提出了一种H∞控制策略。基于d-q轴旋转坐标系下的整流器数学模型,将电流环控制器设计问题转化为H∞控制标准型,选择状态参数,建立了增广状态方程。通过求解Riccati不等式的正定解,得出H∞控制器。使系统存在参数摄动以及外部扰动的情况下,系统依然可以实现稳定运行。通过仿真和实验进一步验证了所设计控制器的有效性和可靠性。
An H∞ control method for the inner current loop of three-phase PWM rectifier was presented. Based on the mathematic model of three-phase PWM rectifier in d -q reference, the problem of the current loop controller is turned into standard setup H∞ control problem. State equations of the current loop are established with suitable state variables. In order to derive the designed controller, the definite solution of Riccati in- equation is solved. The system can still work well under the condition of model perturbance and external disturbance. Simulation and experiment results demonstrate that the designed controller system is suitable and effort for the PWM rectifier.
出处
《电气传动》
北大核心
2011年第9期38-40,64,共4页
Electric Drive
基金
江苏省重大科技成果转化资金项目(BA2008029)
中国矿业大学中央高校基本科研业务费专项基金(2010ZDP01A10)
