Escalator integrative frequency conversion controller based on bypass frequency conversion technology

Abstract

The invention provides an escalator integration frequency conversion controller based on bypass frequency conversion technique, in which an escalator controller and a frequency converter are integrated. The integration frequency conversion controller includes a motor drive circuit, a power supply circuit and a control circuit, wherein the control circuit receives signal from peripheral equipment of the frequency conversion controller and sends treated signal to the motor drive circuit, the motor drive circuit separately receives power supply signals from an industrial power supply and a frequency converser output power supply and sends signal to outside to control an escalator towing machine. The invention divides operation process of the escalator into two portions of starting standby and running with operation frequency, when accelerating, decelerating or standby, the escalator is driven by the frequency converser power supply, and when running stably, the escalator is driven by the industrial power supply. Advantages of the invention are: compact structure, convenient installation and debugging, highly efficient running, stable and safe.

Description

technical field [0001] The invention relates to frequency conversion control and logic control systems for escalators and sidewalks, in particular to bypass frequency conversion technology, and belongs to the technical field of manufacturing, processing and operation control of escalators and sidewalks. Background technique [0002] Escalators and sidewalks are widely used in stations, shopping malls, airports and other occasions where the flow of people is relatively large. From the perspective of control methods, the control methods of escalators and sidewalks are basically the same, and the two are consistent. Escalators can be divided into two types in terms of control methods: frequency conversion escalators and non-frequency conversion escalators. Because the frequency conversion escalator has the advantages of energy saving, small motor impact, and small mechanical wear, the proportion of its use is gradually increasing. [0003] The control of the frequency conversi...

AI Technical Summary

Problems solved by technology

Therefore, when debugging the escalator, the debugger must debug the above two parts separately to make the two parts work together, which increases the difficulty of debugging; secondly, to make the two independent parts work in harmony, information exchange is required between them , prone to signal interference as well as signal connection issues, increasing the potential for failure

In addition, during the downward process of the escalator, due to the existence of the potential energy of the passengers, the escalator traction machine is in the state of power generation. resistance, which not only wastes resources, but also increases the operating cost of the escalator

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