一种单发射多接收磁耦合式多频谐振无线电能传输方法

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摘要目前,已有的多负载无线电能传输（WPT）供电系统主要采用多个基于单一谐振频率的单发射单接收磁耦合电能传输结构,存在发射和接收电路体积大、系统成本高、无线供电类型适应性差等问题。为了实现多频多负载供电应用条件下无线电能的有效传输,提出一种基于单发射多接收磁耦合结构的多频谐振无线电能传输方法,通过建立基于单相全桥逆变器及串/串（SS）谐振补偿网络的系统等效电路模型,分析脉宽调制对系统无线电能传输特性的影响规律。在此基础上,设计一种基于单极性控制的多频率复合脉宽调制（MFPWM）策略,同时实现多个磁耦合谐振频率无线电能的有效传输。最后,基于Matlab/Simulink搭建系统仿真模型,验证了所提多频谐振无线电能传输方法的可行性及有效性。

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	李江南
	李锐华
	胡波

关键词 ：单发射多接收, 磁耦合谐振, 无线电能传输（WPT）, 单相全桥, 脉宽调制（PWM）

Abstract：Wireless power transfer (WPT) system with multiple loads employs a single- transmitter-single-receiver magnetic coupling structure and single resonant frequency currently. However, this structure suffers from large circuit volume, high system cost, and poor adaptability to versatile wireless power delivery scenarios. To enhance wireless power transfer in multi-frequency and multi-load power delivery applications, a multi-frequency resonance method with single-transmitter- multiple-receiver magnetic-coupling structure is proposed. And the impact of pulse width modulation (PWM) on the wireless power transfer characteristics is analyzed using an equivalent circuit model of a single-phase full-bridge inverter and series/series (SS) resonant compensation network. On this basis, a multi-frequency pulse width modulation (MFPWM) strategy is designed based on unipolar control, allowing for effective transmission of multiple magnetic coupling resonant frequencies simultaneously. Finally, a system simulation model is implemented using Matlab/Simulink to validate the feasibility and effectiveness of the proposed multi-frequency resonant wireless power transfer method.

Key words： single-transmitter-multiple-receiver magnetic coupling resonance wireless power transfer (WPT) single-phase full-bridge pulse width modulation (PWM)

收稿日期: 2023-08-28

作者简介: 李江南（1999—）,男,江苏省南通市人,硕士研究生,主要从事电力电子与电力传动方面的研究工作。

引用本文:

李江南, 李锐华, 胡波. 一种单发射多接收磁耦合式多频谐振无线电能传输方法[J]. 电气技术, 2023, 24(11): 1-9. LI Jiangnan, LI Ruihua, HU Bo. A single-transmitter-multiple-receiver magnetic coupling multi-frequency resonant wireless power transfer method. Electrical Engineering, 2023, 24(11): 1-9.

链接本文:

http://dqjs.cesmedia.cn/CN/Y2023/V24/I11/1

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