Energy saver control system for three-phase asynchronous motor

Abstract

The invention discloses an energy saver control system for a three-phase asynchronous motor. The three-phase asynchronous motor comprises an A phase lead, a B phase lead and a C phase lead that are led out; the A phase lead, the B phase lead and the C phase lead are connected with a silicon controlled rectifier A, a silicon controlled rectifier B and a silicon controlled rectifier C respectively; the C phase lead is provided with a resistor; a current sampling module is connected with the resistor through a wire; a voltage sampling module is connected with the B phase lead and the C phase lead separately through wires; the current sampling module and the voltage sampling module input the collected signal into a phase position comparison module; the phase position comparison module inputs the signal after comparison into a controller; and the controller is connected with the silicon controlled rectifier A, the silicon controlled rectifier B and the silicon controlled rectifier C separately. The energy saver control system adopts the integrated circuit control and the intelligent sampling, computing and control are realized; and the energy saver control system has the function of electricity saving as well as the functions of soft start, open-phase protection, overcurrent protection, overhigh protection and the like.

Description

technical field [0001] The invention relates to a control system, in particular to a control system for a three-phase asynchronous motor energy saver. Background technique [0002] In the production process, many electromechanical equipment are in the intermittent load working state, such as planers, slotting machines, etc.; there are also some equipment that are often under-loaded. The existence of these factors increases the unnecessary power loss of the motor, thereby increasing the product cost. . Contents of the invention [0003] The technical problem to be solved by the invention is to provide a three-phase asynchronous motor economizer control system capable of saving energy and reducing consumption. [0004] The technical solution adopted in the present invention is: a three-phase asynchronous motor energy saver control system, including a three-phase asynchronous motor, a controller, a current sampling module, a voltage sampling module and a phase comparison mod...

AI Technical Summary

Problems solved by technology

[0002] In the production process, many electromechanical equipment are in the intermittent load working state, such as planers, slotting machines, etc.; there are also some equipment that are often under-loaded. The existence of these factors increases the unnecessary power loss of the motor, thereby increasing the product cost.

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