Motor energy-saving converting controller and control method

Abstract

The invention discloses a motor energy-saving conversion controller, relating to the field of motor control. The structure of the controller is a contactor structure of a relay; buttons on a control panel are connected with an intermediate relay coil by a conversion board; the relay electric shock extends a contactor outwards and the contactor then controls the running of the motor; three contactors can realize the star-triangle conversion of the overall working process; the three contactors are respectively KM1, KM2 and KM3, and each contactor is provided with two pairs of auxiliary contacts. The three-phase contacts of KM1 and KM2 are shortly connected correspondingly to form the star connection and the phase contacts of KM1 and KM3 are connected from beginning to end to form the triangle connection. When working, a starting button PSB2 is pressed, and then a PLC controller controls automatically according to collection signals to realize the triangle-star automatic conversion connection of the motor. The motor energy-saving conversion controller has the advantages that the PLC automatic controller is adopted to realize the star-triangle automatic mutual conversion in the running process, a large amount of energy is greatly saved, the cost of the controller is low and installation and use is convenient.

Description

technical field [0001] The invention relates to the field of motor control, which is suitable for use in a motor energy-saving conversion control device. Background technique [0002] Electric energy is a form of energy that is widely used in modern times. This energy form has many advantages, such as economical production and transformation, easy transmission and distribution, and convenient use and control. Liberation, labor productivity has been greatly improved, and production tasks that are difficult or impossible to complete by manual labor can be completed. Therefore, electric energy has become the main source of power in various sectors of the national economy. [0003] The production, conversion, transmission, distribution, use and control of electric energy must use the motor as an electromechanical device for energy conversion or signal conversion. In the power industry, generators and transformers are the main equipment of power stations and substations. In indus...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned deficiencies of electric motors wasting energy, the object of the invention provides a kind of electric motor energy-saving conversion controller and control method, utilizes PLC programmable controller, all adopts automatic control, realizes that the electric motor is connected as star-delta automatic conversion, with Achieve energy saving, low cost, convenient installation and simple operation

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