基于LC谐振耦合的“源-网-荷-储”多端口非接触式动态能量交互系统

doi:10.19595/j.cnki.1000-6753.tces.251985

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摘要

在新型能源系统转型战略背景下,针对新能源微网、分布式微电网系统以及多社区能源互联等能源转换与交互发展要求所带来的关键技术挑战,本文研究与设计了一款基于LC串联谐振耦合的具有“源-网-荷-储”一体化接口功能的非接触式动态能量交互系统。该系统集成了“源-网-荷-储”一体化接口功能,可作为单独能源接入也可作为社区级微网母线接入,同时具有储能与负载接口功能,采用LC串联谐振式多线圈耦合的形式实现了多端口之间的电气隔离以及非接触式功率交互。各端口采用全桥拓扑结构形式以适应灵活能源形式的接入,并对谐振网络进行激励功率注入或调理谐振网络所接收的无线功率,同时通过对接口拓扑的控制实现了谐振网络在发射、接收、有源中继三种工作模式下的自由切换,以实现多类能源形式、多社区之间灵活的非接触式动态能量交互。详细分析了系统在开关周期内的不同能量交互形式下的工作模态,对线圈的发射、接收以及中继模态进行了理论分析,并建立了四线圈耦合下的系统动态分析模型。在此基础上设计了混合移相控制策略,采用桥内移相与桥间移相相融合的方法实现了对各端口的输入、输出、有源中继（既不输入也不输出）三种模式及其功率控制,最终通过对端口的工作模式控制的方式实现了对无线传输功率潮流方向的动态调节,完成多端口之间的非接触式动态能量交互。在PSIM中建立了系统的开闭环仿真模型,进行了开环扫描与闭环控制仿真以获取系统在不同功率交互模式下的动态特性,验证系统拓扑结构的正确性与控制方法的有效性。以dsPIC33FJ64GS606数字控制器为核心搭建了四线圈耦合的四端口非接触式能量交互系统的硬件实验平台,并进行了开环扫描与闭环实验,实验结果表明所设计系统拓扑可实现最高180W的功率传输,效率可达77.8%,同时对控制策略进行验证,不仅实现了能量的动态多向交互以及功率的精准控制,且系统在动态过程中对于端口状态的突变具有良好的动态响应性能。

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关键词 ： LC串联谐振, 多线圈谐振耦合, 混合移相调制, 非接触式动态能量交互, 多模态无线电能传输

Abstract：

Against the backdrop of the new energy system transformation strategy, key technological challenges exist in energy interaction among multi-energy access systems, distributed microgrid systems, and DC communities. This paper proposes a contactless dynamic energy interaction system based on LC series resonant coupling, featuring an integrated “source-grid-load-storage” interface functionality. The “source-grid-load-storage” interface connects to the LC resonant network via a full-bridge topology. This configuration enables multiple energy sources to inject power into the LC network. The full-bridge design allows flexible integration of energy sources with varying voltage levels, power ratings, and configurations. This paper employs a multi-coil coupling configuration to enable non-contact dynamic energy interaction among integrated energy sources, grids, loads, and storage systems. It overcomes the limitations of single-energy-form systems by achieving isolated energy exchange within multi-energy systems, while simultaneously realizing multi-modal transmission—including transmission, reception, and relaying—within the coupled network.
This paper analyzes the power transmission methods of the system under different port states. It examines the operating modes of the LC series resonant network functioning as a transmitter, receiver, and active relay. When the real part of the port input impedance is greater than zero, the port operates in energy absorption mode. When the real part of the port input impedance is less than zero, the port enters energy output mode, supplying power to other ports. When the real part of the port input impedance approaches zero, the port enters active relay mode(hereinafter referred to as "relay mode"). At this point, the coil functions solely as a relay unit participating in resonant energy transfer. The relay mode compensates for the attenuation of the coupling coefficient between multiple coils over transmission distance.
This paper establishes a dynamic characteristic model for the system under different operating modes and designs a hybrid phase-shift control strategy. By integrating intra-bridge and inter-bridge phase-shifting techniques, it achieves control over the input, output, and relay modes of each port, along with their power regulation. Concurrently, it implements mode control for the transmission, reception, and relay modes of each coupling coil. By integrating port-mode and coil-mode approaches to dynamically adjust the direction of power flow in wireless transmission, non-contact dynamic energy exchange between multiple ports has been achieved.
A simulation model of the system was established in PSIM. Open-loop scanning and closed-loop control simulations were conducted to obtain the dynamic characteristics of the system under different power interaction modes, verifying the correctness of the system topology and the effectiveness of the control method. Centered on a dsPIC33FJ64GS606 digital controller, a hardware experimental platform for the four-port contactless energy interaction system with four-coil coupling was constructed, and open-loop scanning and closed-loop experiments were conducted. Experimental results demonstrate that the designed system topology can achieve a maximum power transmission of 180W with an efficiency up to 77.8%. Meanwhile, the validation of the control strategy confirms that the system not only realizes dynamic multi-directional energy interaction and precise power control, but also exhibits excellent dynamic response performance to sudden changes in port states during dynamic processes.

Key words： LC Series Resonant Network Multi-Coil Resonant Coupling Hybrid Phase-Shift Modulation Non-Contact Dynamic Energy Interaction Multi-Mode Wireless Power Transfer

收稿日期: 2025-11-16

PACS:

TM724

基金资助:

江苏省高等学校基础科学（自然科学）研究面上资助项目(24KJB470010)

通讯作者: 徐松男,1991年生,副教授,硕士生导师,研究方向为直流微网底层功率变换技术、现代电力电子技术、无线电能传输技术、智能控制于工业及电力电子中的应用技术等。E-mail：songxu@just.edu.cn

作者简介: 陈迅男,1976年生,副教授,硕士生导师,研究方向为电子电路、嵌入式系统等。E-mail：justlab@163.com

引用本文:

陈迅, 徐松, 王雨杰, 王丽娟. 基于LC谐振耦合的“源-网-荷-储”多端口非接触式动态能量交互系统[J]. 电工技术学报, 0, (): 251985-. Chen Xun, Xu Song, Wang Yujie, Wang Lijuan. Research on a Multi-Port Non-Contact Dynamic Energy Interaction System Based on LC Resonant Coupling for “Source-Grid-Load-Storage”. Transactions of China Electrotechnical Society, 0, (): 251985-.

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