An anti-lateral deviation method for wireless charging of an electric vehicle is characterized in that operation is carried out based on a buck circuit cascaded among a magnetic coupling mechanism, a vehicle end rectifier and a load, in order to further improve the anti-deviation performance of a system, when lateral deviation is large, a voltage regulation link of the vehicle end rectifier is controlled to control the duty ratio of a buck circuit switching tube, and the voltage regulation link of the vehicle end rectifier is controlled to control the duty ratio of the buck circuit switching tube; the charging power is consistent with the load demand power; the method specifically comprises the steps that firstly, initial parameters of a system are stored in a controller; secondly, determining a range of a load charging voltage, a duty ratio adjustment range and a constraint condition of minimum transmission efficiency; calculating a real-time mutual inductance value according to the load charging voltage; and finally, adjusting the real-time duty ratio of the buck circuit according to the load demand power. According to the invention, charging power adjustment can be realized without the help of an additional algorithm, and only one voltage sensor is needed for acquiring the load voltage and controlling at the vehicle end, so that double-end communication is avoided, and the use quantity and cost of hardware are reduced.
一种用于电动汽车无线充电的抗横向偏移方法,基于在磁耦合机构、车端整流与负载之间级联的buck电路进行操作,为了进一步提升系统的抗偏移性能,当横向偏移较大时,控制车端整流的调压环节来控制buck电路开关管的占空比,实现充电功率与负载需求功率一致;具体的为:首先,将系统的初始参数存储至控制器;其次,确定负载充电电压的范围、占空比调节范围和最小传输效率的约束条件;然后根据负载充电电压计算实时互感值;最后,根据负载需求功率调整buck电路的实时占空比。本发明无需借助额外的算法即可实现充电功率调节,同时仅需要一个电压传感器用于采集负载电压,在车端进行控制,避免了双端通信,减少了硬件的使用数量和成本。
Lateral offset resisting method for wireless charging of electric vehicle
一种用于电动汽车无线充电的抗横向偏移方法
2025-04-18
Patent
Electronic Resource
Chinese
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