磁耦合谐振式无线电能传输系统频率跟踪的自适应模糊控制  

Adaptive Fuzzy Control of Frequency Tracking Used in Magnetic Coupled Resonance Wireless Power Transfer System

作　　者：刘媛媛[1,2] 冯宏伟 范曦 LIU Yuanyuan;FENG Hongwei;FAN Xi(School of Intelligent Manufacturing,Wuxi Vocational College of Science and Technology,Wuxi Jiangsu 214028,China;School of IoT Engineering,Jiangnan University,Wuxi Jiangsu 214122,China;School of Control Technology,Wuxi Institute of Technology,Wuxi Jiangsu 214121,China)

机构地区：[1]无锡科技职业学院智能制造学院,江苏无锡214028 [2]江南大学物联网工程学院,江苏无锡214122 [3]无锡职业技术学院控制技术学院,江苏无锡214121

出　　处：《电子器件》2021年第6期1385-1391,共7页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61773138);江苏省高校“青蓝工程”青年骨干教师(2021年);优秀教学团队(2020年)项目。

摘　　要：确保无线电能传输(Wireless Power Transfer, WPT)系统保持谐振状态是提高其传输效率的关键因素。考虑到WPT系统是一种松散耦合系统,可能因负载、传输距离等因素的变化,引起WPT系统的谐振工作频率出现分裂或失谐等情况,从而导致系统传输效率大幅降低。为确保磁耦合谐振式无线电能传输系统保持较高的能量传输效率,结合谐振状态对系统传输效率影响的电路分析,提出模糊控制的方法来实现谐振频率的自适应跟踪,并设计出频率跟踪的模糊自适应控制器,实时非线性调节逆变驱动电路的频率,以确保对WPT系统谐振频率的精确跟踪。仿真与实验结果表明,该控制算法增强了WPT系统的工作谐振频率的自适应跟踪能力,对系统传输效率有较大提高。Resonant frequency is the key factor to improve the transfer efficiency of wireless power transfer(WPT)system. Considering that the WPT system is a loosely coupled system, the resonance frequency may be split or detuned due to the changes of load and transmission distance, which will lead to the decline of transfer efficiency. In order to ensure the high transfer efficiency of the WPT system, combined with the circuit analysis, a fuzzy control method is proposed to realize the adaptive tracking of the resonant frequency, and a self-adaptive fuzzy controller for frequency tracking is designed to realize real time nonlinear adjustment of inverter drive circuit frequency, so as to ensure the accurate tracking of resonance frequency in the WPT system. The simulation and experimental results show that the algorithm can enhance the adaptive tracking ability of the WPT system’s resonant frequency, and greatly improve the system transfer efficiency.

关 键 词：无线电能传输(WPT)系统 频率跟踪 最大效率跟踪 自适应模糊控制器 

分 类 号：TM732[电气工程—电力系统及自动化]