Elevator control cabinet reliability ground equivalent verification system and method

Abstract

The invention discloses an elevator control cabinet reliability ground equivalent verification system and method. The system comprises a to-be-verified device, a load simulation device and a verification control device. The to-be-verified device comprises an elevator control cabinet and an elevator traction machine, and the load simulation device comprises a load control cabinet and a load motor. The load control cabinet is in closed-loop connection with a current sensor. The load motor is in transmission connection with the power output end of the elevator traction machine. The verification control device is electrically connected with the elevator control cabinet and the load control cabinet. The elevator control cabinet sends a starting or stopping instruction to the verification control device and the load control cabinet, and the load simulation device synchronously achieves loading and stopping of the load according to the instruction. Simulation of elevator operation conditions can be completed on the ground in a high-precision mode, matching verification of reliability of the control cabinet in development is achieved, especially verification of performance such as the power cycle and the thermal cycle life of a power module in a main loop of the control cabinet is achieved, hoistway resources are not occupied, the verification period is shortened, and resource consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a ground equivalent verification system and method for the reliability of an elevator control cabinet. Background technique [0002] Generally, the reliability test of the elevator control cabinet is verified by installing a complete elevator prototype on the tower. The car is fully loaded or the custom car load is tested continuously and periodically according to a certain operating mode to verify the main circuit components of the elevator under extreme working conditions. (such as power modules, etc.) Whether the temperature rise meets the design requirements, and at the same time, the reliability verification of the control cabinet is achieved by accelerating the simulation of the operating conditions of the entire life design cycle of the elevator. Due to the insufficient height of the elevator sample ladder shaft, the difficulty of simulating the rush hour (full load up-e...

AI Technical Summary

Problems solved by technology

The authorized patent with the notification number CN106986246B is to realize the dynamic simulation of load loading according to the speed signal of the traction machine. This control method cannot realize the simulated loading at the moment before and after the opening of the brake. The long-term locked-rotor phenomenon of the load motor when the elevator is stopped, that is, the long-term short-circuit heating of the load motor and the rapid heating of the power module when it is turned on at low frequency, shorten the service life of the motor and the power module of the inverter or even burn it out

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