The invention belongs to the technical field of wireless power transmission, and provides a dynamic wireless power transmission control method, a dynamic wireless power transmission system and an electric vehicle. The method comprises the following steps: acquiring a load current flowing through a load module of an energy pickup end; inputting the load current into a pre-established first model to obtain an estimated inductive current and an estimated capacitor voltage output by the first model, wherein the first model is a model of a corresponding relation between a state variable and a load current established based on a Kalman filtering algorithm; inputting the estimated inductive current, the estimated capacitor voltage and the load current into a second model, and obtaining a duty ratio value output by the second model based on a preset reference value; and generating a corresponding pulse width modulation signal according to the duty ratio value so as to control the step-down module to generate a load driving signal. The method can quickly and accurately stabilize the amplitude of the load current within a rated range on the premise that only the load current is measured. Therefore, the stability, robustness and quick response performance of the dynamic wireless energy transfer system are improved.
本申请属于无线电能传输技术领域,提供一种动态无线传能的控制方法、动态无线传能系统及电动汽车,通过获取流过能量拾取端的负载模块的负载电流;将负载电流输入预先建立的第一模型,得到由第一模型输出的估计电感电流和估计电容电压;第一模型为基于卡尔曼滤波算法建立的状态变量与负载电流之间的对应关系的模型;将估计电感电流、估计电容电压以及负载电流输入第二模型,基于预设的参考值得到由第二模型输出的占空比值;根据占空比值生成对应的脉宽调制信号,以控制降压模块生成负载驱动信号,从而在只测量负载电流的前提下,快速且精准地将负载电流的幅值稳定在额定范围内,提高动态无线传能系统的稳定性、鲁棒性和快速响应性能。
Dynamic wireless energy transfer control method, dynamic wireless energy transfer system and electric vehicle
动态无线传能的控制方法、动态无线传能系统及电动汽车
2021-10-22
Patent
Elektronische Ressource
Chinesisch
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