tailieunhanh - solar collectors and panels theory and applications Part 8

Tham khảo tài liệu 'solar collectors and panels theory and applications part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 202 Solar Collectors and Panels Theory and Applications The theoretical maximal power as seen in the figure is around 40 W. Our algorithm behaves best on 10 and 12 bits by staying as close as possible to the maximum power while on 8 bits our algorithm s performance is still comparable to Santos et al. 2006 algorithm. Fig. 19. shows that the algorithm needs about 50 ms less than 15 steps to calibrate the variables D and A. Fig. 19. The algorithm behavior a D variation and b A variation Using this algorithm we reached the following result represented graphically Theory Algorithms and Applications for Solar Panel MPP Tracking 203 Fig. 20. Algorithm result for MPP s calculation with three points Note that the power produced PReal seeks the maximum power PMax with a delay of 5 seconds. The algorithm needs 5 seconds to calibrate the variables A and d . The difference between the captured power and the available power is less than 5 . Fig. 21. Tracing of the maximum power through different algorithms for high lightness and temperature variations We made test implementations of this algorithm on 8 10 and 12 bits and we compared their results with a set obtained from an 8 bits reference algorithm Ptgb Santos et al. 2006 and with one without MPPT Po for very fluctuant meteorological conditions simulated by our application - figure 5