感应电机矢量控制相关量的采集及其在DSP中的处理

Acquisition of Relative Parameters in Induction Motor Vector Control and Their Processing in DSP

在感应电机双闭环矢量控制中,需要对电机定子相电流进行实时采集,并将采集到的值送入DSP中进行处理。为了对系统实施欠压保护,对直流母线电压的采集也是必要的。在定点DSP中,需要对相应的反馈值进行处理并Q定标。本文介绍了相电流以及母线电压的采集过程,并分析了对采集到的值在定点DSP中的Q格式处理过程。

In the double closed-loop vector control of the induction motor, it is necessary to collect the stator current of the motor in real time and send the collected values into the DSP for processing. In order to implement the system under-voltage protection, the DC bus voltage acquisition is also necessary. In the fixed-point DSP, we need to use Q calibration to process the corresponding feedback values. This paper introduces the phase current and bus voltage acquisition process, and analyzes the Q Format of the collected values in the fixed- point DSP processing process.