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: obtaining motor parameters including the d-axis voltage, q-axis voltage, d-axis current, q-axis current and d-axis inductance of a motor, the mechanical angular speed of a rotor in the motor, the stator resistance of the motor, and the number of pole pairs of permanent magnets in the motor; and calculating a first-order partial derivative signal of a motor torque to a current vector angle according to the motor parameters; 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 and performing operation control on the motor based on the target current vector angle. According to the motor control method and device, terminal and storage medium of the invention, the state stability of the motor running at the optimal state running point can be ensured.

Description

Technical field [0001] The present application belongs to the technical field of motor control, and more particularly to a motor control method, a device, a terminal, and a storage medium. Background technique [0002] As a green energy, electric energy is growing in today's increasingly developed today, how to optimize the motor to ensure that the motor can efficiently and stable operation is a matter of importance. [0003] In a common motor optimization control, an important control principle is that motor torque T e The first-order deflection number of current vector angle β is zero (ie When a given current amplitude is achieved, the torque of the motor is maximized. Therefore, the motor torque T is usually required. e Extract a first-order deflection number of current vector angle β to control relevant parameters to make it apprond to zero to ensure that the motor is in the best power output state. [0004] In the existing motor control method, it is mainly based on virtual...

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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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