Intelligent relay for improving the performance and the protection of motoresde indusu00c3o trifu00c1sicos

摘要

The present invention, consists of an electronic device whose main and innovative feature aims to significantly improve the efficiency and the power factor of three-phase induction motors by means of automatic switching and intelligent of the connection of the windings estatu00f3ri Cos (which can be a star or triangle) as a function of the value of the line current of the motor.This device combines other useful features, including the optimization of the start-up star - Triangle (innovative concept compared to conventional methods) and motor protection against current surges or overloads), sobretemperaturas and excessive imbalances procedure.According to research conducted by the inventor, the underlying principle of the smart switch connection of the windings estatu00f3ricos of three-phase induction motors, is an innovative concept on a global scale with respect to its application for the order is proposed, and the integration of Other features on the same device has also an innovative concept.