High efficiency power take-off system for the photovoltaic energy station

Keywords: energy plant, photoenergy module, step-up converter, efficiency, electrical circuit

Abstract

To ensure maximum production of electric power by a photovoltaic station, which is, equipped with high-performance photo energy modules we propose to develop a highly efficient power take-off system. The most important part of the proposed power take-off system is a step-up boost converter, which provides a high transmission and transformation of electricity by increasing the DC voltage generated by photo energy modules.

The aim of the work was a developing of constructive and circuit solutions and working parameters calculation of high- voltage power take-off system for photovoltaic energy station. During the performance it has been investigated the dependence of electrical power generated by photo energy modules from the intensity of solar radiation, it has been carried out the calculation of the parameters of the step-up boost converter and designed its circuit diagram also it has been analyzed the working features of power take-off using a step-up boost converter.

By the results of experimental studies the samples of photo energy modules with a power of solar radiation from 1000 up to 2000 W/m2 it has been established that at the radiation power of 1700 W/m2 tested modules working with maximum efficiency at 16.89% and generates maximum electric power up to 419 W, which is 1.7 times more than power, generating by classic solar panels.

Based on the obtained experimental data and results of LLC resonant circuit of step-up boost converter parameters calculations it has been designed the circuit diagram of bridge resonant digitally controlled step-up boost converter which efficiency reaches up to 95.8%. The analysis of the photovoltaic energy station power take-off system using a step-up boost con­verter working efficiency it has been carried out. It was shown that the efficiency of such a system in a wide range of photo energy module illumination power is at 92%, whereas the efficiency of classic power take-off systems does not exceed 70%.

References

1. Kriukov Yu.A., ZaitsevA.Ye., Feshchenko AA., Gorshkov A.V. Influence of operating temperature on efficiency of silicon photovoltaic devices // International Journal of Applied Engineering Research. -2015. - Vol. 10. -No.15. -P. 35446-35450. (Eng)
2. Rozanov Yu.K., Baranov N.N., Antonov B.M., Yefimov Ye.N., Solomatin A.V. Power electronics in the systems running on non-traditional energy sources // Elektrichestvo. - 2002. - №3.-Pp. 20-28. (Rus)
3. Meleshin V., Ovchinnikov D. Managing transistor type power converters. - M.: Tekhnosfera, 2011. - 576 p. (Rus)
4. Gu Yi., Hang L., Chen H., Lu Z. A simple structure of LLC resonant DC-DC converter for multi-output applications // Applied Power Electronics Conference and Exposition. - 2005. - Vol. 3. -P. 1485-1490. (Eng)
5. Abdel-Rahman S. Resonant LLC converter: Operation and Design 250W 33Vin 400Vout Design Example // Infineon Technologies Application Note AN 2012-09. -2012. -V1.0. (Eng)
6. Freeman D. Introduction to photovoltaic systems maximum power point tracking // Texas Instruments Application Report SLVA446, 2010. (Eng)
7. Bogatyrev N.I., Grigorash O.V., Kurzin N.N., Strelkov Yu.L, Telnov G.V., Tropin V.V. Converters of electric power: basic theory, calculation and design. Tutorial, edited by Bogatyrev N.I. - Krasnodar: Б/И, 2002. - 358 p. (Rus)

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PDF Downloads: 26
Published
2016-03-14
How to Cite
Zaitsev, R., Sokol, F., Khrypunov, G., Kirichenko, M., & Prokopenko, D. (2016). High efficiency power take-off system for the photovoltaic energy station. Vidnovluvana Energetika, (3 (46), 31-39. Retrieved from https://ve.org.ua/index.php/journal/article/view/131