分层介质下无线电能传输系统传能机理及关键技术研究

针对复杂非理想环境下智能化装备无线供电系统线圈间传能介质多样性的问题，本项目拟开展分层介质下无线电能传输系统传能机理及关键技术研究，以解决为运行在与能量源不同介质内的智能化装备高效、稳定无线供电的共性关键问题。项目针对磁耦合谐振式无线电能传输技术利用线圈间耦合电磁场实现能量隔空传输的基本原理，通过分层介质内电磁波传输与损耗特性的研究，揭示分层介质下无线电能传输与损耗机理，建立系统电磁一体化理论分析模型，明确系统功效性和稳定性关键影响因素，制定系统功效性定量评价指标及稳定性判断依据。在此基础上，提出跨介质高效稳定耦合的磁路耦合机构设计与控制方案，得到分层介质下线圈间跨介质耦合互感自动识别方法，制定内外多扰动参数影响下不依赖系统数学模型的线性自抗扰控制策略，以有效提升系统的功效性及稳定性。研究结论有望丰富无线电能传输技术体系，为无线电能传输技术和智能化装备的推广普及与产业化发展做出一定贡献。

Regards to the diversity energy transmission media between the transmitting and receiving coils of the wireless power transfer system used for intelligent equipment in complex and non-ideal environments, this project intends to carry out the research on the energy transmission mechanism and the key technologies of the wireless power transfer system in layered media, to solve the common and key problems for stably and efficiently wireless powering up the intelligent equipment operating in different medium compared to the power source. As the magnetic resonant wireless power transfer technology can achieve electric energy transmission without any physical contact is based on the coupled electromagnetic field between the power transmitting and receiving coils. This project will firstly study the transmission and loss characteristics of electromagnetic wave in layered media, to reveal the mechanism of the energy transmission and loss distribution of the system and build up the integration model including the electromagnetic characteristic and circuit characteristic of the system. Based on this model, the main impact factors on the power transfer amount, efficiency and stability will be specified. Meanwhile, the evaluation indexes of the power transfer amount and efficiency, and the stability criteria of the system will be proposed. Based on the theoretical analysis of the system, the magnetic coupler will be designed, and the corresponding control strategy of the transmitter will be put forward to help to improve the coupling between the transmitting and receiving coils in layered media. An automatic identification method to measure the mutual inductance of the coils in layered media will be given subsequently. Finally, to effectively improve the efficiency, amount and stability of the system, a linear active disturbance rejection control strategy which can be designed and utilized without the precise mathematical model of the system will be put forward for the system under multi-parameter disturbance conditions. The conclusions of this project are expected to enrich the basic theory of the wireless power transfer technology and make contribution to the popularization and industrialization of the wireless power transfer technology and intelligent equipment.