Title :
Improving dynamic response of power-factor preregulators by using two-input high-efficient postregulators
Author :
Sebastian, Javier ; Villegas, Pedro J. ; Nuno, Fernando ; García, Oscar ; Arau, Jaime
Author_Institution :
Dept. de Ingenieria Electrica, Electron., de Computadores y Sistemas, Oviedo Univ., Spain
fDate :
11/1/1997 12:00:00 AM
Abstract :
A new method to improve the dynamic response of power-factor preregulators (PFPs) is developed in this paper. The method is based on the use of a very high efficient postregulator with two inputs instead of only one. This two-input postregulator exhibits very high efficiency due to the fact that only a part of the total power undergoes a power conversion process. Such postregulators need two-output PFPs at their inputs, which can be easily obtained in PFPs with transformers or with two PFPs working in parallel
Keywords :
AC-DC power convertors; dynamic response; power convertors; power factor correction; power transformers; rectifying circuits; dynamic response; efficiency; power conversion process; power factor correctors; power-factor preregulators; transformers; two-input postregulators; Capacitors; DC-DC power converters; Helium; Reactive power; Rectifiers; Stress; Switches; Topology; Transformers; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
