旋转式无线充电系统损耗及温度研究

Research on Loss and Temperature of Rotary Wireless Chargingg System

电磁耦合器是实现无线电能传输(WPT)技术的核心组件,其性能和工作温度决定了系统运行的传输效率与使用寿命。为此以强抗偏移性的旋转式电磁耦合器为研究对象,分析和计算了非正弦激励下磁场及损耗分布,通过建立自然对流下计及温度效应的多物理场耦合模型,实现对电磁耦合器温度的精确计算。实验结果验证了理论分析的正确性,通过仿真得到的温升分布规律能较准确展示实际情况,为旋转式电磁耦合器的散热设计提供理论依据。

Electromagnetic coupler is the core component of wireless power transfer(WPT)technology.Its performance and working temperature determine the transmission efficiency and service life of the system.The magnetic field and loss distribution under non-sinusoidal excitation are analyzed and calculated by taking the rotary electromagnetic cou-pler with strong anti-migration as the research object.By establishing the multi-physical field coupling model of natu-ral convection meter and temperature effect,the accurate temperature calculation of the electromagnetic coupler is re-alized.The experimental results verify the correctness of theoretical analysis,and the temperature rise distribution law obtained by simulation can accurately show the actual situation,which provides theoretical basis for the heat dissipa-tion design of rotary electromagnetic coupler.