参数扰动下感应电能传输系统改进型鲁棒控制  

Improved robust control for inductive power transfer system under parameters perturbations

作　　者：李砚玲[1] 黄立敏[1] 何正友[1] 刘野然 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电机与控制学报》2016年第7期40-48,共9页Electric Machines and Control

基　　金：国家自然科学基金(51507147);中央高校基本科研业务费专项资金(2682014CX023);铁路总公司科技研究开发计划课题(2014J013-B)

摘　　要：感应电能传输(inductive power transfer,IPT)技术应用于移动负载供电时,由于其能量传输的方向性限制,不可避免的振动、偏转等机械扰动容易导致系统传输功率的不稳定。主要针对移动负载供电时外部扰动带来的互感扰动问题,设计了一种适用于参数动态扰动下的IPT系统改进型鲁棒控制方法。借助线性分式变换,结合标称IPT系统广义状态空间平均模型及其参数的扰动特征,用含摄动反馈的线性动力学模型表征系统扰动模型;同时跟据广义混合灵敏度指标,计算基于系统扰动模型及目标传递函数的改进型H_∞鲁棒控制器;仿真及实验结果表明,所设计的鲁棒控制策略具有对输出电压的快速跟踪控制能力,且对参数扰动影响具有较好的抑制作用。In the application of inductive power transfer （IPT） technology for the mobile power supply system, due to the directional limit of energy transfer, the unavoidable mechanical disturbances such as vibration and misalignment produce a strong instability in power transmission. An improved robust control method for IFF system under the parameters dynamic perturbations was discussed with regard to mutual- inductance perturbations caused by the system movability. By the linear fractional transformation, the generalized state-space averaging model of a nominal IPT system and its parameters uncertainties were firstly discussed to generate a perturbation feedback linear model to characterize the system disturbed model. And the improved H∞ robust controller was calculated by the generalized mixed sensitivity accord- ing to both the disturbed system model and an objective transfer function. Simulation and experiment re- sults were conducted to verify the performance of fast tracking control of output voltage with the designed robust control method and reduce the impact of the parameters perturbations.

关 键 词：感应电能传输 广义状态空间平均 不确定性 鲁棒控制 数字控制 

分 类 号：TM724[电气工程—电力系统及自动化]