A Review of Solar Tracker Control Strategies

Abstract

This paper presents the use of sunlight trackers to increase the efficiency of solar panels. The sunlight tracking is done by passive and active tracking method with one or two axis. The active trackers use an electrical motor as a driver and can be controlled by a microcontroller or a programable logic controller (PLC) according to the direction of sunlight. The use of this controller in sunlight tracking system performed in real time or periodically. The position of the sun as a controller input can be obtained based on azimuth angle and solar elevation angle or by direct measurement using sensors. From the discussion is obtained an increase of efficiency of 29.37% in avarage using the active tracker.