摘要
为了改进无线供电系统中用电设备与供电系统在相对运动条件下的电能传输特性,提出一种改进动态电能传输性能的线圈结构.首先,基于电磁耦合原理建立无线电能的动态传输模型,再依据Newman公式精确分析动态传输系统的互感,进而研究线圈匝数、传输线圈间距、接收线圈运行速度对互感、传输功率和效率的影响.仿真结果表明:所应用的互感计算方法可以比较准确地计算线圈之间的互感;线圈匝数、传输线圈间距、接收线圈运行速度等的改变将会引起传输特性的大幅变化;传输线圈的合理布置能使系统在减小动态磁耦合传输成本的情况下获取较好的电能传输性能,为动态无线电能传输提供参考.
In order to improve the power transmission characteristics of the electrical equipment and power supply in the wireless dynamic power supply system in relative motion,this paper presents a coil structure to improve the dynamic power transmission performance.Firstly,a dynamic transmission model of wireless power was established based on the electromagnetic coupling principle,and then the mutual inductance of the dynamic transmission system was precisely analyzed based on the Newman formula,so as to study the effects of the number of turns of the coil,the distance between transmission coils and the running speed of the receiver coil on the mutual inductance,transmission power and efficiency.The results show that the mutual inductance calculation method proposed in this paper can calculate the mutual inductance of coils accurately.The changes in the number of coil turns,the distance between transmission coils,and the running speed of receiver coil will cause significant changes in the transmission performance.The system can get a better power transmission performance by reducing the cost of dynamic magnetic coupling transmission with a reasonable arrangement of transmission coil which can provide reference for dynamic wireless power transmission.
作者
章维新
孙伟
ZHANG Wei-xin;SUN Wei(School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《兰州交通大学学报》
CAS
2020年第1期50-55,61,共7页
Journal of Lanzhou Jiaotong University
关键词
无线电能传输
线圈结构
互感
传输特性
wireless power transmission
coil structure
mutual inductance
transmission characteristics
