AC motor stalling fault detection system and method, and information data processing terminal

Abstract

The invention belongs to the technical field of motor fault detection, and discloses an AC motor stalling fault detection system and method, and an information data processing terminal, and the methodcomprises the steps that a zero-crossing chopping upper limit value is adjusted to a maximum value X when a motor is started; after the motor is started, the chopping value is gradually increased, ifthe rotating speed is still K rpm/min when the chopping value is increased to the upper limit value, it is indicated that the motor is likely to be locked, chopping is directly adjusted to the maximum value and continuously output for T1 seconds, and a locked-rotor object is removed through inertia; if the rotating speed still cannot reach the target value after T2 seconds of continuous output, it is judged that the motor stalls; all loads are turned off by the electric appliance after entering protection; and meanwhile, the protection can be recovered only by turning off and then turning on,or the protection can be recovered after power-down and power-on. According to the invention, motor stalling can be rapidly and effectively detected, and the consequence of motor burnout is avoided.A reliable detection means is provided for an electric appliance using the alternating current motor, and the safety coefficient of the system is improved through the means.

Description

technical field [0001] The invention belongs to the technical field of motor fault detection, and in particular relates to a system, a method, and an information data processing terminal for detecting a stalled fault of an AC motor. Background technique [0002] At present, the closest existing technology: "AC motor" is a machine used to realize the mutual conversion of mechanical energy and AC electric energy. Due to the tremendous development of AC power systems, AC motors have become the most commonly used motors. Compared with the DC motor, the AC motor has no commutator (see the commutation of the DC motor), so the structure is simple, the manufacture is convenient, and it is relatively strong. It is easy to make a high-speed, high-voltage, high-current, and large-capacity motor. AC motor power covers a large range, from a few watts to hundreds of thousands of kilowatts, or even millions of kilowatts. In the early 1980s, the largest turbogenerator reached 1.5 million ...

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Problems solved by technology

[0004] In summary, the existing problems in the prior art are: the blocking of the

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