Small Signal Modeling of LCC-S Compensated Multiphase Inductive Power Transfer System Using Extended Describing Function Method

IF 4.5 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Industry Applications Pub Date : 2025-04-17 DOI:10.1109/TIA.2025.3561766

Sukumar Das;Apurv Kumar Yadav

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Abstract

This paper presents the small-signal modeling of an LCC-S compensated multiphase inductive power transfer (MIPT) system using the Extended Describing Function (EDF) method. The system incorporates three-phase electromagnetic coupler powered by a three-phase 2-level voltage source inverter. The implementation of an LCC compensation network at the primary side provides a constant coil current in the primary coil and ensures load-independent gain characteristics. Additionally, the necessary mathematical formulations for deriving the small-signal model using EDFs are thoroughly detailed. Based on this analysis, the open-loop transfer function between the duty cycle and the output voltage of the system is formulated. Furthermore, the LCC-S MIPT system's controller parameters are designed to ensure stable dynamic performance. The simulation results for the linearized model are presented for open-loop and closed-loop operations. Finally, the approach is experimentally validated on a scaled-down MIPT system prototype, and the results demonstrate the functionality of the designed parameters and controller.

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基于扩展描述函数法的lc - s补偿多相感应输电系统小信号建模

本文利用扩展描述函数（EDF）方法对lc -s补偿多相感应功率传输（MIPT）系统进行了小信号建模。该系统采用由三相2级电压源逆变器供电的三相电磁耦合器。在初级侧的LCC补偿网络的实现为初级线圈提供了恒定的线圈电流，并确保了负载无关的增益特性。此外，还详细介绍了利用电磁场推导小信号模型所需的数学公式。在此基础上，建立了系统占空比与输出电压之间的开环传递函数。同时，对LCC-S MIPT系统的控制器参数进行了设计，保证了系统的动态性能稳定。给出了线性化模型在开环和闭环工况下的仿真结果。最后，在一个按比例缩小的MIPT系统原型上对该方法进行了实验验证，结果验证了所设计参数和控制器的功能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Industry Applications 工程技术-工程：电子与电气

CiteScore

9.90

自引率

9.10%

发文量

747

审稿时长

3.3 months

期刊介绍： The scope of the IEEE Transactions on Industry Applications includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.