Comparison between open- and closed-loop trackers of a solar photovoltaic system

Solar energy is one of the renewable energy sources which is widely used to provide heat, light and electricity. The solar tracking controller used in solar photovoltaic (PV) systems to make solar PV panels always perpendicular to sunlight. This approach can greatly improve the generated electricity of solar PV systems. There are popularly two drive approaches including open- and closed-loop drives. This paper analyses and compares the open- and closed-loop trackers of a solar PV system. The obtained experimental results are to validate the effectiveness of each tracker.