单电容耦合WPT系统电能传输机理及关键技术研究

单电容耦合WPT系统借助高频电场实现电能从电源到用电设备的无线传输，对于移动负载的动态无线充/供电具有更加简单灵活等优点和广阔的市场前景。但由于系统的电能传输机理尚不明确，该技术的发展和系统性能提升受到了极大限制，亟需从系统电能传输机理出发，研究相关理论与关键技术。本项目以电磁场相关理论为基础，深入研究电能发射端与接收端之间的本质联系，将传导电流与位移电流统一起来诠释系统电能传输机理；研究系统在为移动负载动态供电过程中发射极板上的电流密度分布规律及耦合极板之间的电场分布规律，为耦合机构建模与分析奠定理论基础；在上述研究基础上给出系统的建模方法，并对系统的动力学行为进行分析，为系统的控制和多目标优化提供理论指导；研究多移动负载下系统的鲁棒控制技术及负载自适应技术，实现系统能够为负载灵活高效的无线供电。本项目的实施将为单电容耦合WPT技术基础理论体系的建立奠定基础，促进WPT技术的完善和发展。

Single capacitive coupling WPT technology can achieve wireless power transfer from power grid or battery to electric equipment via alternating electric fields. For dynamic power supply & charging system with mobile devices, it shows the advantages of simpler and more flexible, and it has broad market prospects. However, the transmission mechanism of the system is still not clear, so the development of the technology and the improvement of system performances are greatly limited. It is urgent to study the transmission mechanism of the system and key technologies. Based on the electromagnetic theory, this project will analyse the essential relation between power transmitter and receiver of the system, and combine the conduction current and displacement current to explain the transmission mechanism of single capacitive coupling WPT system. For the dynamic power supply system with mobile devices, the current density in the transmitter plate and the electric field distribution between the coupling plates will be researched. It is essential for modeling and analysis of the coupler. On the basis of the above researches, this project will establish the system model and analyse the dynamics behavior characteristics. It will lay a foundation for system control and multi-objective parameter optimization. In order to achieve flexible, efficient and safe wireless power supply, the robust control and load adaptive technology will be researched for the system with multiple mobile devices. The research results of this project will lay a foundation for the establishment of basic theoretical system of single capacitive coupling WTP technology, and further promote the perfection and development of electric-field coupling wireless power transfer technology.