A fixed-frequency control method for wireless power transmission battery chargers using a dual-function compensator

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-26 DOI:10.1049/pel2.12703

Sina Bajelvand, Amir Babaki, Alireza Jafari-Natanzi, Ali Yazdian Varjani, Sadegh Vaez-Zadeh

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Abstract

High efficiency and unity power factor (PF) are the most important requirements of a wireless charger system simultaneous with the output voltage regulation. Achieving all above-mentioned criteria in a wide range of the load is challenging in the system. This paper presents a novel control approach applied to series-series wireless power transmission converter by using a dual-function compensator to achieve unity PF and maximum efficiency during the constant power-constant voltage (CP-CV) charging scenarios. A semi-active rectifier with impedance matching capability along with a switch-controlled capacitor constitutes the dual-function compensator on the secondary side. Meanwhile, the primary side inverter executes the CP-CV charging scenario for the battery with various charging characteristics at a fixed-switching frequency. Besides that, all secondary side switches experience soft switching condition throughout the battery charging. Finally, a prototype with a power of 200 W and roughly regulated efficiency of 90% is presented in order to verify the proposed control method.

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使用双功能补偿器的无线输电电池充电器的固定频率控制方法

在调节输出电压的同时，高效率和统一功率因数（PF）是无线充电器系统最重要的要求。要在宽负载范围内实现上述所有标准，对系统而言具有挑战性。本文介绍了一种应用于串联无线输电转换器的新型控制方法，该方法通过使用双功能补偿器，在恒功率-恒电压（CP-CV）充电情况下实现统一 PF 和最高效率。一个具有阻抗匹配能力的半主动整流器和一个开关控制电容器构成了二次侧的双功能补偿器。同时，一次侧逆变器以固定的开关频率为具有不同充电特性的电池执行 CP-CV 充电方案。此外，在整个电池充电过程中，所有二次侧开关都处于软开关状态。最后，介绍了一个功率为 200 W、调节效率大致为 90% 的原型，以验证所提出的控制方法。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.