Motor control method and device, terminal and storage medium

Abstract

The invention belongs to the technical field of motor control, and provides a motor control method and device, a terminal and a storage medium. The method comprises the steps of: injecting a virtual high-frequency signal into a current vector angle of a motor, obtaining a motor torque signal generated after the virtual high-frequency signal is injected, inputting the motor torque signal to a filter for filtering processing, obtaining a first-order alternating-current component signal of the motor torque signal; inputting the first-order alternating-current component signal into a phase shifter for phase shifting processing to obtain an offset signal of a phase offset set value; and summing the product of the first-order alternating-current component signal and a first reference signal and the product of the offset signal and a second reference signal to obtain a first-order partial derivative signal of the torque to a current vector angle, taking the first-order partial derivative signal as an output signal, determining a target current vector angle of the motor based on the output signal, and performing operation control on the motor. According to the motor control method and device, the terminal and the storage medium of the technical schemes, the operation stability of the motor in the optimal state can be ensured.

Description

technical field [0001] The present application belongs to the technical field of motor control, and in particular relates to a motor control method, device, terminal and storage medium. Background technique [0002] Electric energy is a kind of green energy. In today's increasingly developed new energy industry, how to optimize the control of the motor to ensure the efficient and stable operation of the motor is a crucial issue. [0003] In common motor optimal control, an important control principle is that the motor torque T e The first partial derivative with respect to the current vector angle β is zero (ie ), it can be realized that when the current amplitude is given, the output torque of the motor is the maximum. Therefore, it is usually necessary to adjust the motor torque T e The first-order partial derivative of the current vector angle β is extracted to control the relevant parameters to approach zero to ensure that the motor is in the best power output state....

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a motor control method, device, terminal and storage medium to solve the problem of complex structure of the motor control system in the prior art, slow dynamic response speed, serious overshoot and overshoot when the working condition changes suddenly, which is not conducive to the optimal operation of the motor. Accurate and stable estimation of the control state is difficult to achieve the ideal operating state of the motor

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