AT90S8535-single-chip-microcomputer-based electronic soft starter

Abstract

The invention relates to an AT90S8535-single-chip-microcomputer-based electronic soft starter having advantages of simple structure, flexible parameter adjustment, good controlling effect, improved control system reliability, and convenient maintenance and having certain application value. The electronic soft starter with a three-phase voltage-regulation circuit structure is composed of a main circuit module and a control circuit module. The structural key points are as follows: the output of the main circuit module is connected with a voltage detection module and a current detection module; the control circuit module includes a single-chip microcomputer; and the input terminal of the single-chip microcomputer is connected with the voltage detection module and the current detection module. The connection of the input terminal of the single-chip microcomputer includes a remote control module and a keyboard input module; and the connection of the output terminal of the single-chip microcomputer includes a liquid crystal display module, a trigger signal module and an output signal module and the trigger signal module is connected to a main circuit.

Description

technical field [0001] The invention belongs to the field of three-phase asynchronous motors, in particular to an electronic soft starter based on an AT90S8535 single-chip microcomputer. Background technique [0002] At present, the annual power consumption of three-phase asynchronous motors is about 50% of the total global power generation, and its starting current is as high as 5 to 10 times the rated current, and large and medium-sized asynchronous motors will generate a large inrush current when they are directly started. Not only will it cause electrical and mechanical damage to the motor and the equipment it drives, but it will also cause a drop in the grid voltage and affect the normal operation of other electrical equipment in the grid. [0003] Today, due to the development of frequency conversion and soft start technology, some problems in motor control have been fundamentally solved, especially soft start technology has excellent functions in solving the problem o...

AI Technical Summary

Problems solved by technology

[0002] At present, the annual power consumption of three-phase asynchronous motors is about 50% of the total global power generation, and its starting current is as high as 5 to 10 times the rated current, and large and medium-sized asynchronous motors will generate a large inrush current when they are directly started. Not only will it cause electrical and mechanical damage to the motor and the equipment it drives, but it will also cause a drop in the grid voltage and affect the normal operation of other electrical equipment in the grid.

Images