Motor control method and device, storage medium and motor

Abstract

The invention discloses a motor control method and device, a storage medium and a motor. The method comprises the following steps: acquiring a current detection signal of a current sensor; if the current sensor is the current sensor with the bias, the current detection signal is a first detection signal output by the current sensor with the bias; if the current sensor is not provided with the bias, the current detection signal is a second detection signal output after the current sensor without the bias detects the electrified wire; determining whether the current sensor has a fault or not according to the current detection signal; if the current sensor has a fault, controlling the motor to stop, and initiating a reminding message of the fault of the current sensor; If the current sensor does not have the fault, controlling the motor to start. According to the scheme, the problem of frequency converter faults caused by current sensor terminal loosening or inaccurate sampling values caused by current sensor faults can be solved, and the effect of avoiding the frequency converter faults caused by the inaccurate sampling values of the current sensor is achieved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a motor control method, device, storage medium and motor, and in particular to a current sensor fault signal detection and feedback method, device, storage medium and motor of a frequency converter. Background technique [0002] Inverter is a power control device that converts industrial frequency power into adjustable frequency by turning on or off power semiconductor devices. In the refrigeration industry, the frequency converter is one of the key components of the centrifugal unit. As the country vigorously advocates the construction of an energy-saving society, frequency conversion control technology has become the main trend of the refrigeration industry. Whether it is a four-quadrant inverter or an uncontrolled rectifier inverter, it is necessary to detect the current on the input side and the motor side to realize motor control. [0003] During the operation o...

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Problems solved by technology

[0005] The object of the present invention is to provide a motor control method, device, storage medium and motor to solve the problem that the current sensor terminal is loose or the sampling value of the current sensor fault is inaccurate, which leads to the fault of the frequency converter, so as to achieve The effect of avoiding the failure of the inverter caused by the inaccurate sampling value of the current sensor

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