Razvoj učnega pripomočka za demonstracijo delovanja fotonapetostnih modulov

VIDERGAR, SILVO (author), Jankovec, Marko (mentor)

Narava nas čedalje bolj opozarja, da bo za dobrobit našega življenjskega okolja potrebno večji del proizvodnje električne energije nadomestiti z obnovljivimi viri energije, eden izmed teh so tudi sončne celice, ki so osnova fotonapetostnih (PV) sistemov. Za razumevanje delovanja PV sistemov pa je pomembno, da to področje vpeljemo v različne nivoje študija elektrotehnike. Magistrska naloga predstavlja načrtovanje in izvedbo učnega pripomočka za demonstracijo delovanja sončnih celic in PV modulov, s pomočjo katerega bodo študentje podrobno spoznali delovanje PV sistemov. V ta namen smo izdelali model PV modula, ki je sestavljen iz 60-tih sončnih celic, zaščitnih diod in temperaturnega senzorja ter napravo, ki omogoča merjenje električnih napetosti vseh sončnih celic PV modula, jakost električnega toka, temperature in osvetljenosti modula. V napravi je izvedeno tudi programsko nastavljivo breme, ki omogoča obremenitev in zajemanje I-U karakteristike PV modula. Nadzor merjenja in ogled rezultatov meritev se izvaja s programom na osebnem računalniku, za prenos podatkov med osebnim računalnikom in napravo se uporablja Modbus RTU komunikacijski protokol. Naprava omogoča detajlni vpogled v karakteristiko PV modula na nivoju posameznih celic v različnih pogojih delovanja glede osvetlitve, delnega senčenja in temperature in predstavlja učinkovit učni pripomoček za študij fotovoltaike.

• Language: Slovenian
• Keywords: fotonapetostni modul, sončna celica, I-U karakteristika, mikrokrmilnik STM32
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2023
• PID: 20.500.12556/RUL-146656
• COBISS.SI-ID: 154684163
• Publication date in RUL: 05.06.2023

Secondary language

• Language: English
• Title: Development of a demonstration tool for photovoltaic modules

Abstract

Nature often reminds us that we must use more renewable energy if we want to save our environment. One type of renewable energy is electricity produced from photovoltaic (PV) systems. To understand how PV systems work, it is very important to implement this subject into all levels of the study of electrical engineering. This master's thesis represents the development and implementation of a demonstration tool for solar cells and modules. This tool allows students to learn about the operation of PV systems in detail. A miniature PV module consisting of 60 solar cells, protection diodes and a temperature sensor was made for this purpose. We also developed a device that measures the voltages of all solar cells, their current, the temperature and the irradiance of the PV module. The device is also equipped with an adjustable electronic load which enables loading in different operational points as well as acquiring the I-V characteristics. A PC application allows for controlling measurements and viewing the results. The Modbus RTU protocol is used for transferring data between a PC and the demonstration tool. With this demonstration tool it is possible to view in detail the influence of illumination, shading, and temperature on each one of the PV cells in the PV module.

• Keywords: solar cell, photovoltaic module, I-V characteristics, microcontroller STM32