The discontinuous conduction mode Sepic and Cuk power factor preregulators: analysis and design

Author

Simonetti, Domingos Sávio Lyrio ; Sebastián, Javier ; Uceda, Javier

Author_Institution

Dept. of Electr. Eng., Univ. Fed. do Espirito Santo, Vitoria, Brazil

Volume

44

Issue

5

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

630

Lastpage

637

Abstract

Sepic and Cuk power converters working as power factor preregulators (PFP) in the discontinuous conduction mode (DCM) present the following desirable characteristics for a PFP: (1) the power converter works as a voltage follower (no current loop is needed); (2) the theoretical power factor is unity; and (3) the input current ripple is defined at the design stage. Besides, input-output galvanic isolation is easily obtained. This paper analyzes the operation of both power converters as DCM-PFP. Design equations are derived, as well as a small-signal model to aid the control loop design. Both simulation and experimental results are presented that are in agreement with the theoretical analysis and complement the work

Keywords

AC-DC power convertors; power factor correction; rectifying circuits; AC/DC power conversion; Cuk power converters; Sepic power converters; control loop design; design equations; discontinuous conduction mode; input current ripple; input-output galvanic isolation; power factor; power factor preregulators; small-signal model; voltage follower; Analytical models; Bridge circuits; Capacitors; Diodes; Equations; Galvanizing; Power harmonic filters; Reactive power; Switches; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.633459

Filename

633459