无线充电系统参数灵敏度分析及效率优化设计

IF 1.1 4区 工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
Huanmin Wang, Jing Chen, Xunfeng Yuan, Yao Chen, Hui Zhang
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引用次数: 0

摘要

电动汽车无线充电技术近年来备受关注,具有广阔的商业应用发展潜力。无线充电系统的一个基本性能指标是传输效率。磁耦合机构设计和电路参数对系统的传动效率影响最大。本研究对基于lcc型谐振网络的无线功率传输(WPT)电路的输出功率和效率进行了理论计算。仿真研究表明,当电路参数改变时,传输效率和输出增益明显偏离期望值。为了提高传输效率,采用半可控整流电路创建了最佳阻抗配置。基于电磁场理论和等效磁路模型,优化创建了一种新型无接触变压器结构,该变压器具有较高的耦合系数。线圈偏置对传动效率的影响较大。结果表明,在一定距离内,耦合线圈偏移量对传动效率没有影响,超过一定距离后,传动效率几乎不存在。通过低功耗无线充电实验装置,验证了实际验证的可行性和理论研究的准确性。本文利用电路参数灵敏度分析和非接触变压器优化设计为无线充电系统提供了设计指南。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Parameter sensitivity analysis and efficiency optimization design of wireless charging system
Electric vehicle (EV) wireless charging technology has recently attracted a lot of attention and has a broad potential for commercial application development. A fundamental performance indicator of wireless charging systems is efficient transmission. Magnetic coupling mechanism design and circuit parameters have the greatest effects on the transmission efficiency of the system. In this study, the output power and efficiency of the wireless power transfer (WPT) circuit were theoretically computed based on the LCC-type resonant network. Simulation studies demonstrate that the transmission efficiency and output gain deviate significantly from the expected value when circuit parameters are changed. To improve transmission efficiency, the optimal impedance configuration was created using a semi-controlled rectifier circuit. Based on electromagnetic field theory and equivalent magnetic circuit model, a new contactless transformer structure was optimized and created, and the new contactless transformer had a higher coupling coefficient. The coil offset had a greater impact on the transmission efficiency. The results indicate that within a certain distance, the coupling coil offset had no impact on transmission efficiency, and beyond that distance, the transmission efficiency was almost non-existent. Both the feasibility of the practical verification and the accuracy of the theoretical study were tested using a low-power wireless charging experimental setup. This paper provides design guidelines for wireless charging systems using circuit parameter sensitivity analysis and contactless transformer optimization design.
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来源期刊
CiteScore
1.70
自引率
0.00%
发文量
100
审稿时长
4.6 months
期刊介绍: The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are: Physics and mechanics of electromagnetic materials and devices Computational electromagnetics in materials and devices Applications of electromagnetic fields and materials The three interrelated key subjects – electromagnetics, mechanics and materials - include the following aspects: electromagnetic NDE, electromagnetic machines and devices, electromagnetic materials and structures, electromagnetic fluids, magnetoelastic effects and magnetosolid mechanics, magnetic levitations, electromagnetic propulsion, bioelectromagnetics, and inverse problems in electromagnetics. The editorial policy is to combine information and experience from both the latest high technology fields and as well as the well-established technologies within applied electromagnetics.
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