Robust H ∞ output feedback control of bidirectional inductive power transfer systems
Robust H ∞ output feedback control of bidirectional inductive power transfer systems
复制标题
DOI：
10.1515/acsc-2017-0003
复制
发表时间：
2017-03
影响因子：
1.2
通讯作者：
A. Swain;D. Almakhles;M. Neath;A. Nasiri
中科院分区：
文献类型：
--
作者：
A. Swain;D. Almakhles;M. Neath;A. Nasiri
双向感应电能传输（IPT）系统是一种高阶谐振网络，对系统参数变化非常敏感。传统的PID控制器在参数不确定性的情况下往往不能保持令人满意的功率调节。为了克服这些问题，本文提出了一种鲁棒控制器的设计，采用线性矩阵不等式（LMI）技术。探讨了输出对参数不确定性的敏感性，讨论了标称模型及其不确定性的线性分式变换，以生成用于μ综合和LMI分析的标准配置。针对初级调谐电容、初级电感、拾波电感和互感的不确定性，基于结构奇异值和LMI可行性分析，设计了H∞控制器。通过μ-综合和线性矩阵不等式可行性分析，研究了系统的鲁棒稳定性和鲁棒性能。仿真和实验验证了该控制器的功率调节性能。
Bidirectional Inductive power transfer (IPT) systems behave as high order resonant networks and hence are highly sensitive to changes in system parameters. Traditional PID controllers often fail to maintain satisfactory power regulation in the presence of parametric uncertainties. To overcome these problems, this paper proposes a robust controller which is designed using linear matrix inequality (LMI) techniques. The output sensitivity to parametric uncertainty is explored and a linear fractional transformation of the nominal model and its uncertainty is discussed to generate a standard configuration for μ-synthesis and LMI analysis. An H∞ controller is designed based on the structured singular value and LMI feasibility analysis with regard to uncertainties in the primary tuning capacitance, the primary and pickup inductors and the mutual inductance. Robust stability and robust performance of the system is studied through μ-synthesis and LMI feasibility analysis. Simulations and experiments are conducted to verify the power regulation performance of the proposed controller.