Title :
A self-resonant-PWM boost converter with unity power factor operation by using a bang-bang current control strategy with fixed switching frequency
Author :
Toffano, R., Jr. ; Treviso, C.H. ; Farias, V.J. ; Vieira, J.B., Jr. ; de Freitas, L.C.
Author_Institution :
Dept. de Engenharia Electr., Univ. Federal de Uberlandia, Brazil
Abstract :
A boost converter operating with high power factor and without commutation losses is presented in this paper. The almost unity power factor operation is obtained by using a bang-bang hysteresis current waveshaping technique with fired switching frequency. A self-resonant PWM auxiliary circuit is incorporated in the hard boost converter and a lossless commutation is performed. The operational characteristics of the converter are verified by simulation
Keywords :
AC-DC power convertors; PWM power convertors; bang-bang control; commutation; electric current control; nonlinear network analysis; power factor; rectifying circuits; bang-bang current control strategy; bang-bang hysteresis current waveshaping; fixed switching frequency; lossless commutation; self-resonant-PWM boost converter; single phase boost rectifier; unity power factor operation; Capacitors; Hysteresis; Inductors; Pulse width modulation; Reactive power; Resonance; Switches; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.540006
