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Research on positioning technique of wireless power transfer system for electric vehicles

机译:电动汽车无线电力传输系统定位技术研究

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The relative position of the energy transmitting coil and the energy receiving coil has a great influence on the transfer efficiency of the wireless power transfer systems. The transfer efficiency has a marked fall when the two coils are misaligned. Thus it is important to know the exactly position of the two coils to achieve high system efficiency. This paper focuses on the positioning solution for guiding the electric vehicles to the charging area and ensuring the alignment of the two coils. This solution is based on the RFID(radio frequency identification) technique and combined with the magnetic field coupling method to achieve high accuracy and large scale in positioning. The RFID is considered as one of the most preferable ways for the position estimation in indoor and local environment. The positioning system calculates the real-time position of the vehicle in the parking area. Then the position signal is sent to the screem to show the driver where the car actually is. When the two coils are well aligned, the wireless power transfer system can start charging the vehicle.
机译:能量传输线圈和能量接收线圈的相对位置对无线电力传输系统的传输效率产生了很大的影响。当两个线圈未对准时,转移效率具有标记的下降。因此,重要的是要知道两个线圈的恰好位置,以实现高系统效率。本文侧重于将电动车辆引导到充电区域并确保两个线圈的对准的定位解决方案。该解决方案基于RFID(射频识别)技术并与磁场耦合方法组合,以在定位中实现高精度和大规模。 RFID被认为是室内和局部环境中位置估计的最优选方式之一。定位系统计算停车区中车辆的实时位置。然后将位置信号发送到SCSCem以显示汽车实际的驾驶员。当两个线圈良好对齐时,无线电力传输系统可以开始对车辆充电。

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