| 引用本文: | 黄南天,姚友素,张良.基于模态切换的抗偏移无线电能传输系统[J].电力自动化设备,2025,45(6):101-107,132. |
| HUANG Nantian,YAO Yousu,ZHANG Liang.Anti-misalignment wireless power transfer system based on mode-switching[J].Electric Power Automation Equipment,2025,45(6):101-107,132. |
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| 摘要: |
| 在无线电能传输系统中，线圈的大范围偏移会显著改变系统输出电压或电流，影响输出稳定性。为解决该问题，提出一种基于模态切换方法，通过对逆变器和整流器采用不同的驱动方式显著提升无线电能传输系统的抗偏移性能。本研究揭示了逆变和整流电路模态切换的工作原理，提出了实现简单、性能优异的控制策略，通过采用滞环控制的方法解决了系统在切换阈值附近反复切换的问题。采用仿真研究了线圈偏移对耦合系数的影响规律，验证了所提抗偏移性能提升方法的有效性。搭建了基于LCC/S补偿拓扑和平面方形磁耦合机构的样机，样机输出功率恒定为100 W，正对时样机效率高达92.1%，耦合系数下降为原来的13.4 %时系统仍能恒压输出。 |
| 关键词: 无线电能传输 抗偏移 模态切换 LCC/S补偿拓扑 |
| DOI：10.16081/j.epae.202408017 |
| 分类号:TM46 |
| 基金项目:国家自然科学基金资助项目(52277005)；现代电力系统仿真控制与绿色电能新技术教育部重点实验室开放课题项目(MPSS2021?05) |
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| Anti-misalignment wireless power transfer system based on mode-switching |
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HUANG Nantian1, YAO Yousu2, ZHANG Liang1
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1.Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin 132012, China;2.School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China
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| Abstract: |
| Large coil misalignment in a wireless power transfer(WPT) system significantly changes system output voltage or current, making the closed-loop control of the system more difficult and affecting the output stability. To solve this problem, a mode-switching-based method which significantly improves the misalignment tolerance of a WPT system is proposed by using different driving modes for the inverter and rectifier. The mode switching principle of inverter and rectifier is revealed, and a control strategy characterized by easy implementation and excellent performance is proposed. Hysteresis control is employed to solve the problem of frequent switching near the switching threshold. The influence of coil misalignment on coupling coefficient is studied using finite element simulation, and the effectiveness of the proposed mode-switching-based method is verified by circuit simulation. A prototype using LCC/S compensation topology and planar square coupler is built. The output power of the prototype is 100 W, and the efficiency of the prototype in aligned case is as high as 92.1%. The system works stably even though the coupling coefficient changes to 13.4 % of the initial value. |
| Key words: wireless power transfer anti-misalignment mode switching LCC/S compensation topology |
