Implementation of SPWM control of an autonomous voltage inverter using an Arduino microcontroller

U završnom radu opisana je izrada jednofaznog naponskog izmjenjivača u mosnom spoju te implementacija pulsno-širinske modulacije preko Arduino mikroupravljača. Napravljena je teorijska podloga za analizu rada. Cilj je bio napraviti izmjenjvač, napraviti kod za SPWM, uspješno implementirati kod te analizirati rezultate. Nakon toga je objašnjen princip rada. Dan je popis komponenti korištenih u radu, shema rada te je objašnjen kod i generiranje matrica korištenih u kodu. Objašnjene su simulacije u Proteus-u i mjerenja na stvarnom sklopu u slučaju promjene modulacijskog faktora i dubine modulacije te harmonijska analiza napona i struja u MATLAB-u. Napravljena je usporedba mjerenja i simulacija te analiza rezultata.The final paper describes the creating of a single-phase voltage inverter in a full-bridge configuration and the implementation of pulse-width modulation using an Arduino microcontroller. A theoretical basis for the analysis of the work was made. The goal was to create an inverter, create code for SPWM, successfully implement the code, and analyze the results. After that, the working principle was explained. The list of components used in the project and the scheme of project is given, and the code and generating matrices used in the code are explained. Simulations in Proteus and measurements on the real circuit for different modulation factor and depth of modulation and harmonic analysis of voltages and currents in MATLAB are explained. A comparison of measurements and simulations and an analysis of the results were made