非接触电能传输系统恒流控制策略

A constant current control method for contactless power transmission systems

针对负载切换时造成初级回路的导轨电流变化问题,提出了利用智能分段控制算法来调节控制脉冲中的移相角,分析了非接触电能传输系统主电路的电流恒定性问题,最终保证原边导轨电流的恒定,使得系统能在额定条件下正常工作,并对运用分段控制算法的主电路采用了MAT-LAB的Simulink进行了仿真,通过仿真图可得在负载切换前后电流的恒定时间仅在2 ms之内,结果表明采用分段控制算法的仿真结果与理论分析相符合。

In a contactless power transfer （CPT） system, a constant current determines the stability and power transfer capability of the entire system. We focused on track current constant control problems with load changes. We analyzed the influence of load changes on track current and acquired several factors influencing track current. We put forward a piecewise control strategy for phase shifting angle control in primary circuits of CPT systems. We conducted simulation experiments using MATLAB and Simulink. The simulation results indicate that the current stable time is less than 2 ms before and after switching, and show that the control method can control track current constant effectively.