Title :
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
fDate :
10/1/1997 12:00:00 AM
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;
Journal_Title :
Industrial Electronics, IEEE Transactions on
