感应电能传输系统分段供电的双自由度鲁棒控制

发布时间：2018-01-08 12:30

  本文关键词：感应电能传输系统分段供电的双自由度鲁棒控制　出处：《电工技术学报》2017年18期 　论文类型：期刊论文

  更多相关文章： 感应电能传输 互感不确定性 广义状态空间平均 鲁棒控制 双自由度

【摘要】：感应电能传输(IPT)系统在采用分段供电模式时,由于跨区段处励磁磁场强度分布不均,总会引起负载端拾取功率波动,影响系统稳定性及性能。针对IPT系统跨区段供电的输出稳定问题,以LCL谐振电路并联的IPT系统为研究对象,设计一种基于双自由度鲁棒控制的恒压输出策略。借助广义状态空间平均建模方法,结合跨区段处的互感扰动规律,建立参数不确定性模型;基于广义混合灵敏度指标,通过改变输出加权函数增益,得到快速抑制互感扰动影响的H∞鲁棒控制器;在此基础上,推导并设计出用于修正参考输入的前置滤波器;实验结果表明,双自由度鲁棒控制不仅对跨区段互感扰动影响具有较好抑制作用,且能明显改善对参考输入的跟踪响应性能。
[Abstract]:When the inductive power transmission (IPT) system adopts the piecewise power supply mode, because of the uneven distribution of the magnetic field intensity at the cross-section, it will always cause the load end pick up power fluctuation. Aiming at the problem of output stability of power supply in cross-section of IPT system, the IPT system with LCL resonant circuit in parallel is taken as the research object. A constant pressure output strategy based on two degrees of freedom robust control is designed, and the parameter uncertainty model is established by means of the generalized state space average modeling method and the mutual inductance disturbance law at the cross section. Based on the generalized mixed sensitivity index, the H 鈭，

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