Low cost digital module for demonstration of modulation strategies in DC-to-AC converters
Nenhuma Miniatura disponível
Data
2018-01-12
Autores
Dias, Matheus Bortoloti [UNESP]
Goncalves, Flavio Alessandro Serrao [UNESP]
Marafao, Fernando P. [UNESP]
Paredes, Helmo K.M. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
This paper presents the development of an educational digital module able to generate control signals considering several modulation strategies for DC-to-AC converters, single and three-phase, to achieve the integration with power modules usually available in educational power converter kits. The designed system uses an accessible and low-cost microcontroller (PIC18F4520) and also shows a simple and user friendly interface. System outputs are made of a LCD display and the control signals related to the implemented modulations. Regarding the single phase modulations, the module contains carrier based strategies with sinusoidal (SPWM), trapezoidal (TPWM) and third harmonic injection (THIPWM) control signals, there is also Selective Harmonic Elimination (SHE) that is not a carrier based strategy. Considering three phase systems two cases of Six-Steps modulation (120° and 180°) have been implemented, besides an evolution of this technique which is the Space Vector Modulation (SVM). The modulations are validated considering the DC-to-AC converter feeding a resistive inductive load.
Descrição
Palavras-chave
DC-to-AC Converters, Education, Modulation Strategies, Power Electronics
Como citar
14th Brazilian Power Electronics Conference, COBEP 2017, v. 2018-January, p. 1-6.