The invention discloses a direct current bus current estimation method of an electric drive system. The method comprises the steps of S1, signal acquisition; s2, direct current bus current estimation activation judgment; s3, direct current bus current calculation: the motor control unit firstly calculates the real-time consumed power Pipu of the electric drive system, and then the motor control unit calculates the original value Idraw of the direct current bus current; s4, calibrating the current of the direct-current bus; and S5, direct current bus current filtering: the motor control unit adopts a low-pass filter to filter the direct current bus current Idccor to obtain the required direct current bus current Idc, and meanwhile, the motor control unit feeds back the direct current bus current Idc signal to the battery control unit in real time through the local area network control bus. The direct current bus current value estimation is more accurate.
本发明公开了一种电驱系统直流母线电流估算方法,S1,信号获取;S2,直流母线电流估算激活判断;S3,直流母线电流计算:电机控制单元首先计算出电驱系统实时消耗功率Pipu,然后,电机控制单元计算出直流母线电流原始值Idc_raw;S4,直流母线电流校准;S5,直流母线电流滤波:电机控制单元采用低通滤波器对直流母线电流Idc_cor进行滤波得到需要的直流母线电流Idc,同时,电机控制单元通过局域网控制总线将直流母线电流Idc信号实时反馈给电池控制单元。本发明对直流母线电流值估算更加准确。
Method for estimating direct current bus current of electric drive system
一种电驱系统直流母线电流估算方法
23.08.2024
Patent
Elektronische Ressource
Chinesisch
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2022
|Europäisches Patentamt | 2021
|