Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes0-29025 
This is an open access article distributed under the CC BY 4.0
Creative Commons License

Volume 19 article 830 pages: 578-585

Djoko Adi Widodo*
Universitas Negeri Semarang, Faculty of Engineering, Department of Electrical Engineering, Semarang, Indonesia

Purwanto Purwanto
Universitas Diponegoro, Faculty of Engineering, Department of Chemical Engineering, Semarang, Indonesia

Hermawan Hermawan
Universitas Diponegoro, Faculty of Engineering, Department of Electrical Engineering, Semarang, Indonesia

Artificial neural network shows a good performance in predicting renewable energy. Many versions of Artificial Neural Network (ANN) models have been implemented to predict solar potential. This study aims to determine the monthly solar radiation in Semarang, Indonesia using ANN, and to visualize monthly solar irradiance as a map of the solar system of Semarang. This research applied the perceptron multi-layer ANN model, with 7 variables as input data of network learning, which were maximum temperature, relative humidity, wind speed, rainfall, longitude, latitude, and elevation. The input data set was obtained from a NASA normalized geo-satellite database website with a 5-year average daily score. Network training used backpropagation with one of the input layers, two of hidden layers, and one of the output layer. The performance of the model during the analysis of mean absolute percentage error was highly accurate (6.6%) when 12 and 10 neurons were respectively installed in the first and second hidden layers. The result was presented in a monthly map of solar potential within the geographical information system (GIS) environment. The result showed that ANN was able to be one of the alternatives to estimate solar irradiance data. The sun irradiance map can be used by the government of Semarang City to provide information about the solar energy profile for the implementation of the solar energy system.

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