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Economic Analysis and Modeling Process of Photovoltaic Power Systems

100%

Rustemli S. , Dincer F.

2011

tom R. 87, nr 9a

234-247

The importance of renewable energy sources is increasing in our world. Solar energy is the most natural, unlimited, ergonomic, environmentally friendly, useful and available everywhere source among of the renewable energy sources. The installed capacity of solar energy in electricity generation is increasing rapidly all of the countries. The most important part of photovoltaic power installed projects is cost-effective of projects for these systems installations because millions of dollars are being invested to it. This study is crucial in this respect. An example of location is determined and is designed for photovoltaic installation according to the European Commission Photovoltaic Geographical Information System for the city of Van where is the east of Turkey. Needs of the system, system equipments, design style and how it should be established are indicated and worked while considering the geographical coordinates of the location. A detailed study has been prepared taking into consideration all these data. It is a fact that such a system designing would serve as an example for all photovoltaic applications in the world.

W artykule zaprezentowano ekonomiczne aspekty instalacji sieci elektrycznej bazującej na ogniwach fotowoltaicznych. Przedstawiono przykład instalacji we wschodniej części Turcji.

Theoretical and experimental performance investigation of a twoaxis solar tracker under the climatic condition of Denizli, Turkey

80%

Kivrak S. , Gunduzalp M. , Dincer F.

2012

tom R. 88, nr 2

332-336

In this study, an open-loop, two axes movable photovoltaic (PV) solar tracker is designed and analyzed as detailed. Its performance over a fixed tilted (37o) PV system is evaluated theoretically and experimentally for the climatic condition of Denizli, Turkey. Two DC actuators motors are used for the movement of the solar tracker. In addition to the experimental data, a computer program in Visual C#2005 that uses the equations for the solar radiation values of fixed and moving systems is developed. The performance difference of a fixed tilt PV panel and a two-axis moving PV panel was compared for months of May and June and it was found that the energy generation increases nearly 64% for tracking system when it is compared with fixed PV system. Moreover, the performance improvement values for each month are obtained by using the developed and designed computer program.

Zaprezentowano dwuosiowy układ śledzący do celów sterowania ogniwami słonecznymi na przykładzie miasta Denizli w Turcji. Wykorzystano dwa silniki prądu stałego oraz system komputerowy analizujący nasłonecznienie. Po zastosowaniu układu otrzymana energia wzrosła o 64%.