Projeto e implementação de um reator eletrônico auto-oscilante para acionamento de lâmpadas LED

Abstract

FAUSTO, Gustavo Santos. Project and implementation of a self-oscillating electronic ballast to drive LED lamps. Graduation in electric engineering. Undersidade Tecnologica Federal do Paraná. Pato Branco - Brazil, 2018. This paper shows an analysis and project of a self-oscillating electronic ballast to drive LED lamps, this one will operate eight power LEDs. This ballast is built with a half-bridge inverter, a resonant filter and rectification stages for high and low frequencies. The main characteristic of the ballast projected is the use of a self-oscillating command to switch the MOSFETs of the circuit, being represented by an control system with non-linear behavior. The analysis and project is done through the method of descriptive function and the extended Nyquist’s stability criteria. The experimental results are shown to validate the methodology.