• 学报（中文） •

### 基于目标参数最优的磁耦合谐振式无线能量传输系统频率特性分析及仿真验证

1. 1. 桂林电子科技大学 机电工程学院, 广西 桂林 541004; 2. 广州金升阳科技有限公司, 广州 510700
• 发布日期:2020-04-30
• 通讯作者: 范兴明（1978-），男，山东省德州市人，教授，博士生导师，主要研究方向为智能化电器和高电压新技术. 电话（Tel.）: 13457694766; E-mail: fanxm_627@163.com.
• 基金资助:
国家自然科学基金（61741126），广西制造系统与先进制造技术重点实验室主任课题（16-380-12-006Z），广西研究生教育创新计划项目（YCBZ2019050），桂林电子科技大学研究生优秀论文培育项目（16YJPYSS02）

### Analysis and Simulation of Frequency Characteristic Based on Optimal Objective Parameter in Magnetically-Coupled Resonant Wireless Power Transfer System

FAN Xingming 1,JIA Erju 2,GAO Linlin 1,ZHANG Weijie 1,JIAO Ziquan 1,ZHANG Xin 1

1. 1. School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China; 2. MORNSUN Guangzhou Science and Technology Co., Ltd., Guangzhou 510700, China
• Published:2020-04-30

Abstract: Magnetically coupled resonant wireless power transfer (MCR-WPT) has the advantages such as mid-range and high efficiency and shows great application potential. In this technology, the change of frequency has an important impact on the transmission performance of the system. Therefore, the analysis of frequency characteristics is of great significance to improve the performance of the system. The increase of resonant topological strategy is sending terminal, resulting from the variation of loads and transmission distance, is analyzed theoretically through the reflect impedance theory taking coil resistance into account in four topological structures. It is found that series-series topological structure has the most stable frequency property. Besides, this paper researches the relationship between optimal operating frequency and variations of loads, transmission distance in the desiable and undesiable cases by means of multual inductance theory. Modeling and analysis in MATLAB environment verify the correctness of the above theory. The interpolation method and the polynomial fitting are used to simulate and analyze the optimal operating frequency of transmission efficiency under ideal state. The results show that spline interpolation and 8th order polynomial fitting are the best, which can provide some references for improving the accuracy of frequency control in the later period.