Abstract

Abstract:The main purpose of this project is to control parameters of  load by VB application powered by continuous power supply , by selecting thesupply from any of the four sources namely solar, inverter, main and generatorautomatically in case if one the source is absent. The need of electricity isincreasing day by day and the frequent power cuts of electricity are causingmany problems in different areas like banks, colleges/schools, hospitals,houses and industries. Thus there is requirement for an alternate arrangementof power supply. This arrangement can be designed by using ARM7 microcontrollerand relays. When mains supply fails automatically it shifts to next sourcegenerator by priority and so on. LEDs (Light emitting diodes) can be used toshow that which source is used to provide the supply. This work presents asimple control application for a DC motor and LED in laboratory use. Thepurpose of this application is to maintain the desired parameters on a deviceoperating on the same processor. Two small laboratory DC motor and pairs of LEDof nominal power have been used for testing the controller. The controllerfunctions as a DC chopper and PWM signal is produced by an Arduino UNOcontroller. A detailed analysis is provided on the equipment and the techniquesthat have been used for the control of the power electronic device is by“visual Basic”. The scope of this work was to plan and test the controller, interms of energy efficiency and economical operation. This study presents thecritical results of the tests focusing on the best operational point anddiscusses the related conclusions. The both controller’s operation wasefficient that were tested.

Keywords:  LED, VB, ARM7, DC, PWM, UNO,M.S.E.B