Research Article
A Low-Cost Closed-Loop Solar Tracking System Based on the Sun Position Algorithm
Figure 4
Variation of EL and Az angles for simulated results on 21 March, 10 July, and 15 December 2016, respectively, for Qatar. Note that the positive values of the elevation angles represent daytime, whereas the negative angles represent nighttime.
| (a) |
| (b) |
| (c) |
| (d) |
| (e) |
| (f) |