风光互补发电无线电能传输系统的研究与设计

Research and Design of Wind-solar Hybrid Generation Wireless Power Transmission System

风光互补发电系统作为一种绿色能源可独立对外部供电,无线电能传输(wireless power transfer)技术又提供了一种方便快捷的能量传输方式。结合两者的优点,将风光互补发电系统的输出作为WPT谐振电路的输入端,利用无线电能传输技术对负载供电,利用了绿色能源的同时又能节约电力运输成本。分析了磁耦合感应与磁耦合谐振之间的联系以及平面线圈频率分裂的相关因素,针对目前小型平面谐振无线充电设备随发射端和接收端距离的变化而产生传输波动的问题,在发射端采用XKT-408集成电路进行自动频率锁定,在发生频率分裂时调整线圈偏移角度可削弱两线圈的互感系数来抑制频率分裂现象,提高了接收线圈峰值电压。最后搭建了风光互补发电无线能量传输系统,在径向距离50 mm处可成功对负载充电,该模型为风光互补发电无线充电系统的应用提供了参考。

The wind-solar hybrid generation system can provide power to the outside independently as a kind of green energy resource and wireless power transmission technology also provides a convenient and efficient way to transmit energy. The output energy of hybrid wind-solar generation system can be directly used as the input of the magnetic coupled resonant wireless power transmission system by using the advantages of both technology,which has not only utilize green energy but also saves electricity transportation costs. To counter the problem of transmission power fluctuation of the distance variation between transmitter and receiver,the XKT-408 integrated circuit with the function of automatic frequency locking is applied in transmitter coil and the mutual inductance coefficient of the resonant coils is adjuested by changing offset angle to weaken the mutual inductance coefficient of the two coil when happening frequency splitting to improve the peak voltage of the receiving coil,based on analysing the connection between the induction magnetic coupling,the magnetic coupling resonance,and correlation factor of frequency splitting of planar coil. In the end,the wind-solar hybrid generation system is built and the results show that this system is successful in charging load at the radial distance 50 mm,which can provide a reference for the application of wind-solar hybrid generation wireless power transmission system.