Elevator main unit protection method and device, computer equipment and storage medium

Abstract

The invention relates to an elevator main unit protection method and device, computer equipment and a storage medium. The elevator main unit protection method comprises the steps of obtaining elevatorparameters and current counter emf generated by an elevator main unit; determining a quotient of the current counter emf and resistance value as short-circuit current, and judging whether the short-circuit current is larger than demagnetizing current value or not; and if the judging results shows yes, transmitting a speed reduction instruction to the elevator main unit, wherein the speed reduction instruction is used for indicting the elevator main unit to reduce the rotating speed. When the short-circuit current of the elevator main unit is larger than the demagnetizing current value, motormagnetic steel demagnetizing is caused, and scrapping of the main unit is caused. Through obtaining of the elevator parameters and the current counter emf, the magnitude of the short-circuit current is determined, the short-circuit current of the main unit is related with the rotating speed of the main unit, the short-circuit current is obtained in time, when the short-circuit current is larger than the demagnetizing current value, the rotating speed of the elevator main unit is controlled, and therefore even if the short-circuit fault appears in the elevator main unit, the elevator main unitcannot generate the demagnetizing phenomenon.

Description

technical field [0001] The present application relates to the technical field of elevator safety protection, in particular to an elevator host protection method, device, computer equipment and storage medium. Background technique [0002] At present, due to cost reasons, some elevator products use magnetic field weakening control to make the elevator run at a speed higher than the rated speed. impact on the host. If the demagnetization current limit of the host is less than the short-circuit current, it will demagnetize the host and cause damage to the host. [0003] During the implementation process, the inventors found at least the following problems in the traditional technology: there is no solution for the degaussing phenomenon of the elevator host in the traditional method. Contents of the invention [0004] Based on this, it is necessary to provide an elevator host protection method, device, computer equipment and storage medium capable of solving the degaussing p...

AI Technical Summary

Problems solved by technology

[0002] At present, due to cost reasons, some elevator products use magnetic field weakening control to make the elevator run at a speed higher than the rated speed. impact on the host

If the demagnetization current limit of the host is less than the short-circuit current, it will demagnetize the host and cause damage to the host

[0003] During the implementation process, the inventor found that there are at least the following problems in the traditional technology: there is no solution for the degaussing phenomenon of the elevator host in the traditional method

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