Accurate and Fast Load Estimation Under Detuned Operation of IPT Systems

IF 1.6 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2025-02-27 DOI:10.1002/cta.4497

Hani Savaedi, Seyed Saeid Heidari Yazdi, Mehdi Bagheri, Alireza Namadmalan

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Abstract

This paper introduces an accurate and easy-to-implement algorithm for estimating the mutual inductance and load for inductive power transfer (IPT) systems. The algorithm employs a modified fundamental harmonic analysis (MFHA) and takes into account models of the battery and output filter. Using this algorithm, mutual inductance, output power, and the instantaneous voltage of the battery are predicted with less than 5% error. The formulations are presented for a series–series IPT system and generalized for non-symmetric conditions, meaning when the primary and secondary sides have different resonant frequencies. The proposed estimation method has been verified by different sensitivity analyses and simulations, using MATLAB and PSIM simulators. To validate the proposed algorithm, a laboratory prototype with operating frequencies of 82 to 85 kHz and maximum output power of 200 W was implemented and the accuracy of the estimations has been verified under different output power and operating frequencies for both symmetrical and non-symmetrical conditions.

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IPT系统失谐运行下的准确快速负荷估计

本文介绍了一种准确且易于实现的感应功率传输（IPT）系统互感和负载估计算法。该算法采用一种改进的基频分析（MFHA），并考虑了电池和输出滤波器的模型。利用该算法对电池的互感、输出功率和瞬时电压进行预测，误差小于5%。该公式适用于串联串联IPT系统，并推广到非对称条件下，即当主次侧具有不同的谐振频率时。利用MATLAB和PSIM仿真器进行了不同灵敏度分析和仿真，验证了所提估计方法的有效性。为了验证所提出的算法，在工作频率为82 ~ 85 kHz，最大输出功率为200 W的实验室样机上实现了该算法，并在对称和非对称条件下，验证了不同输出功率和工作频率下估计的准确性。

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来源期刊

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.