Automation of Solar System for Maximum Power Point Tracking using IoT

Deep Learning Techniques for Photovoltaic Solar Tracking Systems: A Systematic Literature Review

“…Image smoothening was another preprocessing technique used to enhance data quality. Sujatha et al [102] used sky image data to trace the position of the sun. In this work, image smoothening filters were used as a preliminary technique to improve the image quality of the sun.…”

“…Further, most of the papers that included data normalization used the Min-Max scaling approach, which adjusts the data value to a range between 0 and 1 or -1 and +1. The authors in [102,106,116,117,121,125,126,129,131,132] used the Min-Max scaling approach to normalize their data. On the other hand, the authors in [111,133] used the standard scaler approach to normalize the data to have a zero mean.…”

“…Carballo et al [119] converted images with four object classes, namely sun, cloud, target and heliostat, from red, green, and blue (RGB) to Hue, Saturation, and Lightness (HSL). Similarly, the authors in [102,132] converted RGB sky images to HSL to improve image quality and enhance solar tracking in the presence of abnormal weather conditions. The researchers reported that the conversion of image colour scales produced a better performance in their model.…”

“…Table 3 shows a summary of the data type, data source and features used in the various publications.              [100]              [101]              [102]              [103]              [104]              [105]              [106]              [107]              [108]              [10]              [109]              [110]              [111]              [112]              [113]              [114]              [115]              [116]              [117]              [118]              [119]              [120]              [121]              [122]                           [125]              [126]              [127]              [128]              [129]              [130]              [131]              [132]             ...…”

“…Similarly, Pierce et al [132] used sky image data obtained from a fisheye-style camera to predict the sun's position and solar irradiance. Additionally, Sujatha et al [102] used sky images, longitude, and latitude variables to predict the azimuth angle of the sun. The images and video data of the sun were captured using vision sensors whose orientation was controlled by a servo motor mechanism.…”