应用于无线电能传送系统的测控系统设计与开发

Design and development of measuring & control system for wireless power transfer system

在对无线电能传送(WPT)系统进行测试时,需要对运行频率、开关管的占空比与死区时间等参数进行调整,对电流、电压等参数进行采集,同时需要确保系统的开关管运行于零电压开通状态以获得较大的传输功率和较高的传输效率。因此,设计了一套基于ARM及现场可编程门阵列(FPGA)的测控系统及相应的上位机软件。测控系统的测控板采集直流电压、电流输入值和高频交流电压、电流输出值,以及交流电流与电压之间的相位差,并计算WPT系统的效率。目前,该系统已经成功应用于电动汽车无线充电系统、大间距无线电能传输系统、在轨无线供电的小火车实验系统等。

During WPT（Wireless Power Transfer） system commissioning,some parameters should be adjusted, such as operating frequency,duty cycle ＆ dead time of switch transistor,etc.,some parameters should be sampled ,such as voltage ,current,etc. ,and the zero-voltage open-state of switch transistor operation should be ensured to obtain larger transmission power and higher transmission efficiency. A measuring ＆ control system based on ARM and FPGA with corresponding host-computer software is designed. Its measuring ＆ control board acquires the inputs of DC voltage and current,the outputs of high-frequency AC voltage and current,and the phase angle difference between AC voltage and current,based on which,the efficiency of WPT system is calculated. The designed system has been successfully applied to the wireless EV charging system,long-distance WPT system and experimental train system with on-rail wireless power supply.