基于等效阻抗的分数阶RLC_(α)串联谐振BD-WPT系统传输特性分析  

Analysis of transmission characteristics of fractional-order RLC_(α) series resonant BD-WPT system based on equivalent impedance

作　　者：李若琼[1] 翁源 李欣 LI Ruoqiong;WENG Yuan;LI Xin(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China;School of New Energy and Power Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]兰州交通大学新能源与动力工程学院,甘肃兰州730070

出　　处：《云南大学学报（自然科学版）》2024年第3期460-468,共9页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(51767015);甘肃省高等学校产业支撑计划项目(2023CYZC-39);兰州交通大学军民融合创新团队培育基金(JMTD202209)。

摘　　要：针对谐振式无线电能传输系统中分数阶电感、电容元件的仿真实现困难的问题,采用等效阻抗实现分数阶电容的等效.基于分数阶电容的阻抗特性,给出了一种分数阶RLC_(α)串联谐振双向无线电能传输(bidirectional wireless power transfer,BD-WPT)系统结构,通过建立含分数阶电容的串联谐振式双向无线电能传输系统的电路模型,推导了其传输功率和效率关系.仿真实验结果表明,与整数阶串联谐振系统相比,系统的输出功率提升了7.82%,传输效率提升了0.58个百分点.In order to solve the problem that it is difficult to realize the simulation of fractional-order inductors and capacitors in resonant wireless power transfer system,the equivalent impedance is adopted to realize the equivalent of fractional-order capacitors.Based on the impedance characteristics of fractional-order capacitance,a fractional-order RLC_(α)series resonant bidirectional wireless power transfer(BD-WPT)system is presented.The circuit model of series resonant bidirectional wireless power transfer system with fractional-order capacitance is established.Furthermore,the relation between transmission power and efficiency is deduced and verified by simulation.The results show that compared with the integer-order series resonant system,the output power of the system is increased by 7.82%,and the transmission efficiency is increased by 0.58 percentage points.

关 键 词：磁耦合谐振式无线电能传输 双向无线电能传输 等效阻抗 分数阶电容 传输特性 

分 类 号：TM92[电气工程—电力电子与电力传动]