Real Time Monitoring And Controlling Of Solar Panel Using Labview

This paper aims at the development of real time process to track the sun position and maintain maximum efficiency using Arduino UNO and LabVIEW. The parameters such as voltage, current, light intensity of solar panel are acquired continuously. Voltage is measured by using voltage divider, current is measured by using acs712 and light dependent resistors(LDR) is used for capturing maximum light source and the acquired data are processed in Arduino and send to LabVIEW. Arduino compares the value of two LDRs which are placed in the opposite sides of the solar panel and accordingly sends signal to the stepper motor. The stepper motor rotates the solar panel to the maximum light source location sensed by LDR with better resolution than servomotor. In software development, the Graphical User Interface (GUI) is constructed by using LabVIEW. The tracking process of sun is made in both automatic mode and manual mode by using an external switch in the circuit. When the switch is in ON position, it is in the manual mode and vice versa. The automatic mode is governed by Arduino-stepper motor interface. In manual mode, the desired step angle is entered manually in Arduino or LabVIEW. The energy from the solar panel is stored in battery. That stored energy is used to supply the arduino board and also load.

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