#Efficiency of cuk converter circuit full#

Such improvement, however, is achieved at the expense of using more circuit components. Referring to the IV characteristic shown in Fig.Ĭuk converter has a curve more close to a straight line. This will lead to some improvement in that IV characteristic in Cuk converter. One should note that the results from the Cuk converter are also suitable for Sepic converter. To investigate the input characteristic of these converters, lets take the Cuk converter as an example. In this case, the capacitor C 1 can be designed with large value to balance the instantaneous inputoutput power, resulting in high PF in the input and low second harmonic ripple in the output voltage. Lets consider the case when the input inductor operates in DCM while the output inductor operates in CCM.

#Efficiency of cuk converter circuit full#

View chapter Purchase book Read full chapter URL: Power Factor Correction Circuits Issa Batarseh Ph.D., Huai Wei Ph.D., in Power Electronics Handbook (Third Edition), 2011 F.Ĭuk Converter and Sepic Converter It can be shown that Cuk converter and Sepic converter given in Figs.Įach of these converter topologies has two inductors, with one located at its input and the other at its output. Efficiency Of Cuk Converter Circuit Full Chapter URL It can be electrolytic, however, so physical size is not normally a problem. Cuk Converter The switch must handle the sum of input and output current: (10) I PEAK ( S 1 ) I IN I OUT I OUT 1 V OUT V IN The ripple current in C2 is equal to I OUT, so this capacitor must be large. Efficiency Of Cuk Converter Circuit Full Chapter URLįigure 5.13.