戴欣, 夏梓壹, 犹安红. 多激励端WPT系统基于模型逆的输出控制[J]. 中国电机工程学报, 2022, 42(20): 7319-7331. DOI: 10.13334/j.0258-8013.pcsee.213076
引用本文: 戴欣, 夏梓壹, 犹安红. 多激励端WPT系统基于模型逆的输出控制[J]. 中国电机工程学报, 2022, 42(20): 7319-7331. DOI: 10.13334/j.0258-8013.pcsee.213076
DAI Xin, XIA Ziyi, YOU Anhong. Model-inverse-based Output Control of the Multi-excitation-unit WPT System[J]. Proceedings of the CSEE, 2022, 42(20): 7319-7331. DOI: 10.13334/j.0258-8013.pcsee.213076
Citation: DAI Xin, XIA Ziyi, YOU Anhong. Model-inverse-based Output Control of the Multi-excitation-unit WPT System[J]. Proceedings of the CSEE, 2022, 42(20): 7319-7331. DOI: 10.13334/j.0258-8013.pcsee.213076

多激励端WPT系统基于模型逆的输出控制

Model-inverse-based Output Control of the Multi-excitation-unit WPT System

  • 摘要: 无线电能传输(wireless power transfer,WPT)技术应用已拓展至车间AGV、电动汽车等诸多领域,然而,在技术应用过程中,由于单体容量局限,整体功率传输能力受到一定的限制,具有多激励端(multi excitation unit,MEU)拓扑结构的WPT系统能很有效提升系统功率传输能力,同时赋予更高的功率调节自由度,降低单体电压、电流应力。然而,MEU间交叉耦合与高系统阶数极大地增加了控制的难度。文中利用MEU-WPT系统模态能量集中的特性,提出一种基于模型逆的控制器矩阵设计方法,实现用低阶(仅1阶)控制器对高阶WPT系统(17阶)的控制,并且实现多个激励单元整体的输入电压协调,处理回路之间的交互作用。同时,也为多输入多输出WPT系统控制器的设计提供一种通用的框架。该方法可直接推广到具有多个发射线圈与多个接收线圈的多自由度WPT系统中。最后设计的实物实验验证控制方法的有效性。

     

    Abstract: The application of wireless power transfer (WPT) technology has been extended to workshop AGV, electric vehicles, and many other fields. However, in the process of technology application, due to the limitation of monomeric power capacity, the overall power transmission capacity is limited to a certain extent. The WPT system with multiple excitation units (MEU) can effectively improve the power transmission capacity of the system, give more power regulation freedoms and reduce monomeric voltage and current stress. However, the cross coupling among multiple coils and high system order greatly increases the difficulty of controller design. Based on the characteristics that the mode energy of the multi-excitation-unit WPT system is concentrated in a very few modes, a controller matrix method based on model inverse was proposed. At the same time, this paper also provided a general framework for the controller design of multi-input multi-output (MIMO) WPT system. This method can be directly extended to multi-degree-of-freedom WPT systems with multiple transmitting coils and multiple receiving coils. Finally, the effectiveness of the control method was verified by experiment.

     

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