Trabalho de Conclusão de Curso de Graduação
Análise de conversor Ca–Ca monofásico rebaixador de topologia clássica com solução do problema de comutação
Fecha
2019-07-11Autor
Silva Júnior, Vander Silvio da
Institución
Resumen
In this paper the design and losses analysis on the semiconductors of a PWM chopper
single-phase converter are presented. It steps down a voltage of 220 Volts at the source
to 127 Volts at the load. The ordering of the commutation according to a voltage or current
measured is described, as a solution for the commutation problem. The commutation and
conduction losses are estimated for two arrangements: IGBT with a SiC-diode and SiCMOSFET.
The filters are designed for both technologies, the MOSFET having its electrical
parameters significantly smaller because of its higher operating frequency. Simulation results
are presented and a prototype is designed.