The invention discloses a parameter identification method for a wireless charging system of an electric vehicle, which is applied to the wireless charging system of the electric vehicle adopting an SS compensation structure and comprises the following steps of: (1) storing and reading a relevant parameter nominal value from the interior of a controller; (2) a sensor collects data such as voltage, current and working frequency in real time according to a set sampling period; (3) calculating corresponding parameters based on a normalized spectrum characteristic formula of the electric vehicle wireless charging system of the SS compensation structure; (4) judging whether parameter deviations such as inductance/capacitance, load, frequency and the like are considered or not, and if not, identifying a coupling coefficient, calculating a mutual inductance value and judging whether the parameters are in an allowable range or not; and (5) if considering, pre-estimating a coupling coefficient, enabling capacitance deviation to be equivalent to self-inductance deviation, and then identifying all parameters. According to the invention, based on the measurement of current, voltage and working frequency, the rapid parameter identification of the wireless charging system of the electric vehicle can be realized.

    本发明公开了一种电动汽车无线充电系统的参数辨识方法,是应用于采用SS补偿结构的电动汽车无线充电系统中,并包括:(1)从控制器内部存储读取相关参数标称值;(2)传感器按设定采样周期实时采集电压、电流、工作频率等数据;(3)基于SS补偿结构的电动汽车无线充电系统的归一化频谱特性公式计算相应的参数;(4)判断是否考虑电感/电容、负载、频率等参数偏差,若不考虑,辨识耦合系数,计算互感值,判别参数是否在允许范围内;(5)若考虑,先预估耦合系数,并将电容偏差等效为自感偏差,再辨识所有参数。本发明基于电流、电压与工作频率的测量,能实现对电动汽车无线充电系统的快速参数辨识。


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    Titel :

    Parameter identification method for wireless charging system of electric vehicle


    Weitere Titelangaben:

    一种电动汽车无线充电系统的参数辨识方法


    Beteiligte:
    LI WEIHAN (Autor:in) / SONG JIAYI (Autor:in) / LI CHENGXI (Autor:in) / ZHAN LIMIN (Autor:in)

    Erscheinungsdatum :

    2023-09-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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