电流源型半桥变换器的鲁棒控制

发布时间：2018-11-13 12:15

【摘要】：为抑制电流源型半桥变换器升压过程中的干扰信号,提出一种基于相似反对称结构设计的鲁棒控制方案.通过分析开关模式和工作过程,并考虑电源电压波动和负载扰动的影响,采用状态空间平均法建立带有不确定项的数学模型.利用相似反对称结构的逆推方法设计闭环控制器,保证了直流母线电压的稳定,并通过李亚普诺夫理论分析系统的动态性能,得到系统快速性的调节方法.仿真结果表明,该方案不仅对不确定性具有较好的鲁棒性,且对外部扰动具有较强的抑制作用.
[Abstract]:A robust control scheme based on the similar antisymmetric structure is proposed to suppress the interference signals during the boost of the current source half-bridge converter. By analyzing the switching mode and working process and considering the influence of voltage fluctuation and load disturbance, a mathematical model with uncertainty is established by using the state-space averaging method. The closed-loop controller is designed by using the inverse method of similar antisymmetric structure to ensure the stability of DC bus voltage. By analyzing the dynamic performance of the system by Lyapunov theory, the fast adjusting method of the system is obtained. Simulation results show that the proposed scheme is not only robust to uncertainties, but also has a strong suppression effect on external disturbances.
【作者单位】：四川大学电气信息学院;
【分类号】：TM46

【参考文献】