Motor, and pre-protection control method and pre-protection system thereof

Abstract

The invention discloses a motor, and a pre-protection control method and pre-protection system thereof. The pre-protection control method comprises the following steps: before the motor is started, disconnecting a power supply input end of the motor from a wiring end of a motor body; when a motor starting instruction is received, detecting and judging whether a power supply parameter of a power supply input end of the motor meets a corresponding preset condition or not; if not, continuing to keep the power supply input end of the motor disconnected with the wiring end of the motor body, and performing fault removal; and if yes, connecting the power input end of the motor with the wiring end of the motor body. In the operation process of the motor, monitoring whether the power supply parameters of the power supply input end meet the corresponding preset conditions, and when the power supply parameters do not meet the corresponding preset conditions, the power supply input end of the motor is disconnected from the wiring end of the motor body. Compared with the prior art, the situation that the motor is still powered on and started when the power supply is abnormal is prevented, and the risk that the motor is burnt out due to the fact that the motor is connected with the abnormal power supply is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor, a motor pre-protection control method and a pre-protection system. Background technique [0002] With the continuous development of industrial technology, the application of high-power low-voltage motors is becoming more and more extensive. For low-voltage motors, the rated current can reach the kiloampere level. Cause low-voltage motor windings to burn out; in fact, it is not uncommon for low-voltage motors to burn out. The industry is also thinking of various ways to protect low-voltage motors from being burned out, but with little success. The phenomenon of low-voltage motors burning out still happens from time to time, which not only causes a lot of waste of manpower, material resources, and resources, but also brings considerable economic losses to the enterprise. The direct cause of low-voltage motor burnout is mainly high current (several times more than th...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a motor, a motor pre-protection control method and a pre-protection system, which solves the problem in the prior art that the motor is easily affected by a large current and has a high risk of being burned

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