DocumentCode :
3427875
Title :
Analysis of the zero-current-switched quasiresonant converters used as power factor preregulators
Author :
Gil, P. ; Sebastian, J. ; Cobos, J.A. ; Uceda, J. ; Aldana, F.
Author_Institution :
Div. de Ingenieria Electron., Univ. Politecnica de Madrid, Spain
fYear :
1992
fDate :
29 Jun-3 Jul 1992
Firstpage :
1052
Abstract :
The use of zero-current-switched quasi-resonant converters (ZCS-QRCs) as power factor preregulators (PFPs) is studied. The study is applicable to boost, buck-boost, flyback, SEPIC, and Cuk topologies. The main conclusion is that the switching frequency variation range using a half-wave resonant switch is lower than that using a full-wave resonant switch if the load connected to the output is almost constant. Moreover, using topologies with a transformer (flyback, SEPIC or Cuk), this variation range can be minimized choosing an adequate value of the normalized switching frequency at the peak of the sinusoidal input voltage. However. this range increases greatly when the load changes in the same manner. In this case, a reduced switching frequency variation range is obtained using a full-wave switch. However, this type of resonant switch decreases the efficiency because it handles reactive energy, and then a trade-off between switching frequency variation range and efficiency must be considered
Keywords :
power convertors; power factor correction; Cuk topologies; SEPIC topology; boost topology; buck-boost topology; flyback topology; half-wave resonant switch; power factor preregulators; reactive energy; zero-current-switched quasiresonant converters; DC-DC power converters; Pulse width modulation; Pulse width modulation converters; Reactive power; Resonance; Switches; Switching converters; Switching frequency; Topology; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE
Conference_Location :
Toledo
Print_ISBN :
0-7803-0695-3
Type :
conf
DOI :
10.1109/PESC.1992.254768
Filename :
254768
Link To Document :
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