Title :
A soft switched forward converter without current and voltage stress
Author :
Da Silva, E. Soares ; Coelho, E.A.A. ; de Freitas, L.C. ; Vieira, J.B., Jr. ; Farias, V.J.
Author_Institution :
Departamento de Engenharia Eletrica, Univ. Fed. de Uberlandia, Brazil
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper presents a steady-state analysis with a description of a two transistor forward converter operating in soft switching mode without voltage and current stresses. The use of a soft commutation cell allows the auxiliary switch to operate in ZCS mode at turning on and ZVS mode at turning off. The main switch S1 operates in ZVS-ZCS at turning on and ZVS at turning off and the main switch S2 operates in ZCS at turning on and hard switching at turning off. The output voltage is controlled using the PWM technique. Operating principles, simulation and experimental results are presented
Keywords :
DC-DC power convertors; power semiconductor switches; power transistors; switching circuits; PWM control technique; ZCS; ZVS; ZVS-ZCS; auxiliary switch; current stresses reduction; hard switching; main switch; operating principles; output voltage; soft commutation cell; steady-state analysis; two-transistor forward DC/DC power converter; voltage stresses reduction; Active inductors; Capacitors; Chromium; Stress; Switches; Switching converters; Switching frequency; Turning; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954031
