Belt speed starting method, system and equipment of asynchronous motor and storage medium

The invention discloses a belt speed starting method, system and device for an asynchronous motor and a storage medium, and is applied to the technical field of motor control, and the method comprises the steps: connecting a current to the asynchronous motor which is rotating freely; judging whether the detected d-axis component of the back electromotive force of the rotor is 0 or not; if yes, the rotating speed of the asynchronous motor is determined based on the q-axis component of the rotor back electromotive force; otherwise, performing feedback adjustment on the d-axis component of the rotor back electromotive force until the d-axis component of the rotor back electromotive force is 0, and determining the rotating speed of the asynchronous motor based on the q-axis component of the rotor back electromotive force; and taking the determined rotating speed of the asynchronous motor as an initial rotating speed, and controlling the asynchronous motor based on the normal operation mode. According to the schem