Proposal of Compact Active and Reactive Power Processing Circuit for RI-WPT Receivers

2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE) Pub Date : 2023-02-19 DOI:10.1109/CPERE56564.2023.10119609

Hoda Yassin, M. M. Samy, A. Shawky, M. Saad, M. Orabi, E. Alarcon

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Abstract

Wireless Power Transfer (WPT) concept has been realized through many technological methods to feed power in a cordless way in many applications. Among these various methods, Resonant Inductive Wireless Power Transfer RI-WPT has been extensively used to charge the batteries for consumer electronics such as smartwatches, mobile phones, and laptops. However, at high resonant frequency, this technology is vulnerable to the frequency variation in transmitter and receiver circuits, which results from components tolerance and other related factors. Frequency mismatch severely drops the conversion power efficiency and deteriorates the effectiveness of RI-WPT. To solve this issue, this paper proposes and verifies a novel active and reactive power control circuit at the receiver side of a wireless power transfer system. A 10W 127.7 kHz RIWPT receiver system is designed and verified against variations in compensation network elements, where 1. 3W is recovered after frequency re-tuning thanks to the proposed circuit.

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RI-WPT接收机的紧凑型有功与无功处理电路的设计

无线电力传输(WPT)的概念已经通过多种技术手段实现，在许多应用中以无线方式供电。在这些方法中，共振感应无线电力传输RI-WPT已广泛用于智能手表，手机和笔记本电脑等消费电子产品的电池充电。然而，在高谐振频率下，该技术容易受到发射和接收电路中频率变化的影响，这是由于元件公差等相关因素造成的。频率失配严重降低了转换功率效率，降低了RI-WPT的有效性。为了解决这一问题，本文提出并验证了一种新型的无线电力传输系统接收端有功无功控制电路。设计了一种10W 127.7 kHz RIWPT接收机系统，并针对补偿网元的变化进行了验证。由于所提出的电路，频率重新调谐后恢复了3W。

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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2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)

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