一种磁耦合多频谐振式无线电能传输系统设计  

Design of a Magnetic Coupling Multi-frequency Resonant Wireless Power Transmission System

作　　者：胡波[1] 王汉卿 李江南 李锐华[1] HU Bo;WANG Hanqing;LI Jiangnan;LI Ruihua(School of Electrical and Information Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《实验室研究与探索》2025年第2期24-30,共7页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(52207243);教育部产学合作协同育人项目(202102362006,220904422152050)。

摘　　要：为了适应多频多负载无线供电应用场景,提出了一种单发射双接收磁耦合多频谐振式无线电能传输系统设计方案。首先,基于互感理论和耦合模理论,建立了单发射双接收无线电能传输系统等效电路模型;其次,通过分析脉宽调制对系统无线电能传输特性的影响规律,提出了一种基于单极性控制的多频复合脉宽调制策略;然后,针对单发射双接收磁耦合多频谐振式无线电能传输系统,设计了一种基于圆角矩形的同轴异侧单发射双接收平面螺旋形磁耦合线圈及相应的高频控制电路和谐振补偿电路;最后,搭建系统样机进行实验测试。测试结果表明,该系统能够同时实现多个磁耦合谐振频率无线电能的有效传输,验证了系统设计方案的可行性及有效性。A single transmitter multiple receiver magnetic coupling structure which owns multi-frequency resonant wireless power transmission(WPT)capability is proposed to satisfy the application requirement of multi-frequency and multi-load wireless power supply scenario.Firstly,based on mutual inductance theory and coupling mode theory,an equivalent circuit model of a single transmitter dual receiver wireless power transmission system is established.Then,by analyzing the impact of pulse width modulation on the wireless energy transmission characteristics of the system,a multi-frequency composite pulse width modulation strategy based on unipolar control is designed.Furthermore,a coaxial opposite side single transmitter dual receiver planar spiral magnetic coupling coil shaped on rounded rectangle and corresponding high-frequency control circuit and resonant compensation circuit are designed for a single transmitter dual receiver magnetic coupling multi frequency resonant wireless charging system.At last,experimental testing is conducted.The test results indicate that the system can effectively transmit power wirelessly from multiple magnetic coupled resonant frequencies simultaneously,hence,the feasibility and effectiveness of the system design scheme is verified.

关 键 词：无线电能传输 单发射多接收 脉宽调制 磁耦合多频谐振 实验系统 

分 类 号：TM724[电气工程—电力系统及自动化]