A method, apparatus, device and medium for suppressing pre-magnetizing current rush

Abstract

The application discloses a method, device, equipment and medium for inhibiting pre-excitation current impact, and is applied to the field of industrial control. The method for inhibiting pre-excitation current impact comprises the following steps: obtaining a modulation ratio in flux linkage closed-loop control and a feedforward component of the modulation ratio; superimposing the feedforward component on the modulation ratio to obtain a modulation ratio instruction; and driving an inverter according to the modulation ratio instruction and a voltage phase angle obtained through the flux linkage closed-loop control to control the start of a motor. The method can inhibit the impact of pre-excitation current by adding feedforward control to the modulation ratio, superimposing the feedforward component on the modulation ratio to obtain the final modulation ratio instruction, making the excitation current tend to be smooth, occupying less computing resources, and reducing the implementation complexity. The application also provides a device, equipment and medium for inhibiting pre-excitation current impact, which correspond to the method for inhibiting pre-excitation current impact, and have the same beneficial effects.

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