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Karol Basiński, Bartłomiej Ufnalski and Lech M. Grzesiak
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 I shaque K., S alam Z., A mjad M., M ekhilef S., An improved
Maciej Żołądek, Krzysztof Sornek, Karolina Papis, Rafał Figaj and Mariusz Filipowicz
Nowadays, photovoltaic systems installed in urban areas have to be an essential part of distributed generation systems, and lead to improve energy efficiency of buildings. The paper describes the operation aspects of the 7,5 kWp photovoltaic installation located on the roof of the didactic building of AGH University of Science and Technology. The significant part of the roof Is occupied by HVAC installation, so the periodic shading is occurring. It makes, that a level of energy generated in the PV system is lower than expected. The first part of the test was focused on the validating model of the installation and determine its impact on the CO2 emissions. Then, modifications in the arrangement of the panels were considered (redirecting of additional light stream). Moreover, an economic and environmental analysis of proposed improvements were conducted.
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Ribeiro, H.; Pinto, A.; Borges, B., "Single-stage DC-AC converter for photovoltaicsystems," Energy
The algorithm for maximum power point tracking (MPPT) using a fixed is widely used because of its simplicity and easyness to implement. This paper presents an improvement consisting in a variable step (VS) applied to the standard Hill Climbing MPPT technique to improve both accuracy and tracking speed. Drawbacks will still be encountered in VS tracking algorithms, between response time and power oscillation.
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Oleksandr Veligorskyi, Oleksandr Husev, Viktor Shevchenko, Kostiantyn Tytelmaier, Roman Yershov, Roman Kosenko and Dmitri Vinnikov
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Cortez, L., Cortez, J.I., Aguilar, G.M., Rueda, S.M., Rodriguez, A.D., García, G.T., Camacho, A.P. and Hernandez, EH. (2012), “Determination of the Efficiency of a PhotovoltaicSystem Operating On the Climatic Features of Mexico”, International journal of advanced renewable energy research, Vol. 1, No. 11, pp. 611-617.
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10. Mahela, O.P., Ola, S.R.: Impact of grid disturbances on the output of grid connected solar photovoltaicsystem in IEEE Students’ Conference on Electrical, Electronics and Computer Science, 2016.
11. Lou, X., Loparo, K.A.: Bearing fault diagnosis based on wavelet transform and fuzzy inference, Mechanical Systems & Signal Processing, Vol. 18, no.5, pp. 1077-1095, 2004.
12. Lou, X., Loparo, K.K.: Bearing Fault Diagnosis Based on Wavelet Transform