Energy transfer characteristics analysis of MCR-WPT system with intermediate coils

2021 IEEE Southern Power Electronics Conference (SPEC) Pub Date : 2021-12-06 DOI:10.1109/SPEC52827.2021.9709481

Wenlan Gong, Jing Xiao, Liqun Yin, Ning Wu, Shaonan Chen

{"title":"Energy transfer characteristics analysis of MCR-WPT system with intermediate coils","authors":"Wenlan Gong, Jing Xiao, Liqun Yin, Ning Wu, Shaonan Chen","doi":"10.1109/SPEC52827.2021.9709481","DOIUrl":null,"url":null,"abstract":"For the wireless power transmission with medium and long transmission distance, the intermediate coil is a good solution. In order to analyze intermediate coil transfer characteristics of the single, double and three layers, firstly, based on the understanding of the circuit structure of the Magnetic coupling resonance wireless power transfer (MCRWPT) system, the theoretical calculation formula of output power and efficiency is deduced according to Kirchhoffs law. Then, mutual inductance of coils and magnetic field strength was simulated in ANSYS Maxwell. On the premise that mutual inductance of the three coils was approximately equal, the number of turns of the three coils was obtained, and the theoretical value of AC resistance was calculated by using the formula. Finally, the experimental platform is built to measure the actual mutual inductance, self-inductance and AC resistance, and calculate their transmission efficiency. The results show that the single layer coil has the smallest internal resistance and the highest transmission efficiency at 200 kHz and 32 cm transmission distance. Finally, the rationality of the theoretical calculation formula of Litz-coil resistance is verified by experiments.","PeriodicalId":236251,"journal":{"name":"2021 IEEE Southern Power Electronics Conference (SPEC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE Southern Power Electronics Conference (SPEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPEC52827.2021.9709481","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

For the wireless power transmission with medium and long transmission distance, the intermediate coil is a good solution. In order to analyze intermediate coil transfer characteristics of the single, double and three layers, firstly, based on the understanding of the circuit structure of the Magnetic coupling resonance wireless power transfer (MCRWPT) system, the theoretical calculation formula of output power and efficiency is deduced according to Kirchhoffs law. Then, mutual inductance of coils and magnetic field strength was simulated in ANSYS Maxwell. On the premise that mutual inductance of the three coils was approximately equal, the number of turns of the three coils was obtained, and the theoretical value of AC resistance was calculated by using the formula. Finally, the experimental platform is built to measure the actual mutual inductance, self-inductance and AC resistance, and calculate their transmission efficiency. The results show that the single layer coil has the smallest internal resistance and the highest transmission efficiency at 200 kHz and 32 cm transmission distance. Finally, the rationality of the theoretical calculation formula of Litz-coil resistance is verified by experiments.

查看原文本刊更多论文

带中间线圈的MCR-WPT系统能量传递特性分析

对于传输距离中远的无线电力传输，中间线圈是一个很好的解决方案。为了分析单层、双层和三层中间线圈的传输特性，首先，在了解磁耦合共振无线电力传输(MCRWPT)系统电路结构的基础上，根据基尔霍夫定律推导了输出功率和效率的理论计算公式。然后在ANSYS Maxwell中对线圈的互感和磁场强度进行了仿真。在三个线圈的互感近似相等的前提下，得到三个线圈的匝数，利用公式计算出交流电阻的理论值。最后搭建实验平台，测量实际互感、自感和交流电阻，并计算其传输效率。结果表明，单层线圈在200 kHz和32 cm传输距离下具有最小的内阻和最高的传输效率。最后，通过实验验证了利茨线圈电阻理论计算公式的合理性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2021 IEEE Southern Power Electronics Conference (SPEC)

自引率

0.00%

发文量