Title :
Analysis of the FB-ZCS-PWM converter as a power factor preregulator
Author :
Gil, P.M. ; Lumbreras, A. ; Sebastián, J. ; Uceda, J.
Author_Institution :
Dept. de Autom. y Electronica, univ. Publica de Navarra, Pamplona, Spain
Abstract :
In this paper the full bridge-zero current switching-pulsewidth modulation (FB-ZCS-PWM) converter is analyzed in order to be used as a power factor preregulator (PFP). Firstly, the equations that show its steady state operation are determined and then they are applied to the study of the converter as a PFP. Its dynamic model is found using the transfer functions deduced from it in order to close the current control loop. In order to properly close this loop in power factor correction (PFC), the coefficient values of its transfer function which depend on the the DC operation point along a line semicycle, are deduced by using the notion of “load seen” by the converter in PFC. Finally, the results are verified through simulation and by building a small power converter
Keywords :
PWM power convertors; bridge circuits; closed loop systems; electric current control; power factor correction; switching circuits; transfer functions; DC operation point; PWM converter; closed loop control; current control loop; dynamic model; full bridge converter; line semicycle; power factor correction; power factor preregulator; pulsewidth modulation; steady state operation; transfer functions; zero current switching; Frequency control; Pulse width modulation; Reactive power; Rectifiers; Steady-state; Switching converters; Topology; Transfer functions; Voltage control; Zero current switching;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474924
