Off-grid Solar Power System Dimensioning for Telecom Sites
Frankenhaeuser, Carl-Mikael (2025)
2025
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2025060721433
https://urn.fi/URN:NBN:fi:amk-2025060721433
Tiivistelmä
Telecom infrastructure sites for cellular communications need to be in service uninterrupted, which demands reliable power supply. Traditionally solar powered off-grid sites use lead-acid batteries and diesel generators as back-up, which is pollutant and expensive. The focus of this thesis is the sizing of off-grid solar systems for telecom sites. The thesis considers what these sites are, what they include and how to dimension a solar system corresponding to the consumption of the telecom site.
In this engineering work an Excel-calculator was created, which includes four tabs where the actual calculations are made. In these tabs the main components of an off-grid solar system are sized, and these are solar panels, rectifiers, solar charge controllers and batteries. The required number of these components are determined based on the given specifications by the user. These specifications are mostly basic data sheet information such as efficiency.
The determination of the number of panels requires solar irradiation data, which can be obtained from various websites. To avoid the process of manually obtaining the data from a website, the process was automatized by coding.
This thesis was conducted for Efore Telecom Finland Oy. The outcome is an Excel-calculator, which accurately dimensions solar powered off-grid telecom sites in given geographical locations.
In this engineering work an Excel-calculator was created, which includes four tabs where the actual calculations are made. In these tabs the main components of an off-grid solar system are sized, and these are solar panels, rectifiers, solar charge controllers and batteries. The required number of these components are determined based on the given specifications by the user. These specifications are mostly basic data sheet information such as efficiency.
The determination of the number of panels requires solar irradiation data, which can be obtained from various websites. To avoid the process of manually obtaining the data from a website, the process was automatized by coding.
This thesis was conducted for Efore Telecom Finland Oy. The outcome is an Excel-calculator, which accurately dimensions solar powered off-grid telecom sites in given geographical locations.