Escalator energy-saving control system based on embedded type technology

Abstract

The invention discloses an escalator energy-saving control system based on an embedded type technology, and a main loop is that each phase of a three-phase power supply is connected with two groups of star-connected pulse duration modulation controllers respectively and successively after passing through an inductance and a resistor, the center point of each group of pulse duration modulation controllers is a positive electrode output end and a negative electrode output end, and the positive electrode output end and a negative electrode output end bridges the capacitance; a control circuit is that each phase voltage and current signal are sampled and extracted from each phase of the three-phase power supply and are connected with a microprocessor through a reshaping circuit and an isolating circuit; voltage is output from the positive electrode output end and the negative electrode output end and is connected with the microprocessor through the isolating circuit; The three-phase pulse duration modulation output of the microprocessor is respectively connected with each pulse duration modulation controller through a driver and an isolator; and the microprocessor is connected with a fault protective circuit, a keyboard display circuit and a communication interface circuit. The most obvious characteristic of the escalator energy-saving control system is energy conservation. The energy conservation of the escalator on average is more than 40%. The average energy consumption is 50% of that in single speed operation. Simultaneously, mechanical abrasion is reduced, and service life of installation kit and a complete machine is prolonged.

Description

technical field [0001] The invention belongs to escalator control, in particular to an escalator energy-saving control system based on embedded technology. Background technique [0002] Escalator control The traditional direct torque control (DTC) uses hysteresis to compare the deviation between the flux linkage and torque and the given value, and according to the comparison result, the basic space voltage vector generated by the inverter is selected by looking up the table , although the dynamic response of the torque is fast, there are shortcomings such as large torque, flux linkage and current ripple, and the switching frequency of the inverter is not constant. To this end, scholars from various countries have explored new methods to improve the problems of torque ripple in traditional DTC. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an escalator energy-saving control system based on embedded technology. ...

AI Technical Summary

Problems solved by technology

[0002] Escalator control The traditional direct torque control (DTC) uses hysteresis to compare the deviation between the flux linkage and torque and the given value, and according to the comparison result, the basic space voltage vector generated by the inverter is selected by looking up the table , although the dynamic response of the torque is fast, there are shortcomings such as large torque, flux linkage and current ripple, and the switching frequency of the inverter is not constant.

Images