Mono-axis vs Bi-axis Tracking for a String of Photovoltaic Modules

Authors

  • N. I. Tatu Author
  • C. Alexandru Author

DOI:

https://doi.org/10.24084/repqj09.696

Abstract

This paper presents a comparative study of

motion laws applied to a mono-axis string of photovoltaic

modules and to a bi-axis system. This study will reveal which

system is more efficient (inclusive economically) in the

geographical area of Braşov and under which conditions. There

are two types of tracking systems: mono-axis and bi-axis, the

last being split into other three types of tracking systems

according to their rotation axis. First the solar angles and direct

solar radiation are computed and graphically modeled. Further

the optimum elevation and daily angles are determined. For

each interval both tracking efficiencies are calculated and then

compared. Also, the yearly tracking efficiencies of mono-axis

and bi-axis systems are compared. Taking into account the

technical and economical aspects, beside the energy gain of the

dual-axis tracking system, it was concluded that a mono-axis

system is preferred for the studied geographical area.

Author Biographies

  • N. I. Tatu

    Department of Renewable Energy Systems and Recycling

    Transilvania University of Braşov

    B-dul Eroilor, 29, 500036 Braşov (România)

    Phone/Fax number: +0040 268 412921, e-mail: nicoleta-irina.tatu@unitbv.ro

  • C. Alexandru

    Department of Renewable Energy Systems and Recycling

    Transilvania University of Braşov

    B-dul Eroilor, 29, 500036 Braşov (România)

    Phone/Fax number: +0040 268 412921, e-mail: calex@unitbv.ro

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Published

2024-01-17

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Section

Articles