The invention provides a dynamic wireless charging constant-current control method based on active-disturbance-rejection control. The method is used for solving the problems that an existing dynamic wireless charging system is slow in constant-current control response and weak in anti-interference capacity. The constant current control method comprises the following steps: S1, analyzing the wireless charging system to obtain a differential equation of output current and Boost converter parameters, and determining the total disturbance quantity of the system according to the LADRC control principle and the differential equation; s2, constructing an LADRC controller according to the wireless charging system; s3, current and voltage signals of a charging load are collected in real time and transmitted to the LADRC, and the LADRC estimates each state variable and total disturbance and compensates the state variables and the total disturbance; and S4, the control signal is subjected to amplitude limiting and then acts on a PWM generator, the control signal passes through a driving circuit and then controls a power switch tube of a Boost converter, and constant-current control of the receiving end of the wireless charging system is achieved. The method has the advantages that the dynamic response is fast, the anti-interference performance is high, the dependence degree on a system model is low, and an accurate mathematical model is not needed.

    本申请提供基于自抗扰控制的动态无线充电恒流控制方法,用于解决现有动态无线充电系统恒流控制响应慢且抗干扰能力弱的问题。恒流控制方法步骤为:S1对无线充电系统进行分析获得输出电流与Boost变换器参数的微分方程,并根据LADRC控制原理和微分方程确定系统的总扰动量;S2根据无线充电系统构建LADRC控制器;S3实时采集充电负载电流、电压信号并传给LADRC控制器,LADRC控制器通过估计各状态变量及总扰动并加以补偿;S4将控制信号限幅后作用于PWM发生器,经驱动电路后控制Boost变换器的功率开关管,实现无线充电系统接收端的恒流控制。本申请具有动态响应快,抗干扰性能强,对系统模型依赖度低,不需要精确的数学模型的优势。


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    Title :

    Dynamic wireless charging constant current control method based on active disturbance rejection control


    Additional title:

    基于自抗扰控制的动态无线充电恒流控制方法


    Contributors:
    LIU QUAN (author) / CHEN FENGWEI (author) / WU NING (author) / XIAO JING (author) / XIAO JIANG (author) / TANG CHUNSEN (author) / CHEN SHAONAN (author) / CHEN WEIDONG (author) / GUO MIN (author) / GUO XIAOXUAN (author)

    Publication date :

    2024-10-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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