The invention discloses a current correction method, device and equipment and a medium, and belongs to the technical field of motor control. The method comprises the steps that after an operation instruction is received and before an elevator enters an operation state, all switching tubes of an upper bridge arm or all switching tubes of a lower bridge arm in a three-phase inverter circuit are controlled to be switched on, recording the sampling value of the three-phase current of the three-phase inverter circuit in the control process to obtain a sampling current; determining a target current bias value according to the sampling current; after the elevator enters a running state, the sampling value of the three-phase current is corrected through the target current bias value, and the corrected three-phase current is obtained; the corrected three-phase current is used for controlling operation of the elevator. According to the method, the three-phase current is subjected to bias processing by using the current bias value corresponding to the elevator in the actual operation state, so that the result after the bias processing of the three-phase current can accurately represent the real state of the three-phase current, and the stability of the elevator in the operation process can be further improved.
本申请公开了一种电流校正方法、装置、设备及介质,属于电机控制技术领域,该方法包括:接收到运行指令后、且在电梯进入运行状态前,控制三相逆变电路中上桥臂的所有开关管或下桥臂的所有开关管导通,并在控制过程中记录三相逆变电路的三相电流的采样值,得到采样电流;根据采样电流确定目标电流偏置值;在电梯进入运行状态后,利用目标电流偏置值对三相电流的采样值进行校正,得到校正后的三相电流;校正后的三相电流用于控制电梯运行。由于该方法是利用电梯在实际运行状态下所对应的电流偏置值来对三相电流进行偏置处理,这样就使得三相电流偏置处理后的结果能够准确表征三相电流的真实状态,由此就可以进一步提高电梯在运行过程中的稳定性。
Current correction method, device, equipment and medium
一种电流校正方法、装置、设备及介质
2024-05-14
Patent
Electronic Resource
Chinese
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