The major disadvantage in the cuk converter is input current is high due to this inductor losses are maximum and by using the single switch throughout the operation so temperature and switching losses are also high. The advantages of using cuk converter over the conventional Buck-Boost topology are continuous current at both input and output and low output voltage ripple with properly designed filter. Cuk converter is one of the most versatile Buck-Boost converter topologies that is output voltage from converter can be both lower and higher than input voltage. By paralleling the converters, the input current can be shared among inductors so that high reliability and efficiency in power electronic systems can be obtained.
Nowadays, step up conversion is widely used in many applications like Electric vehicles, Photovoltaic (PV) system, Uninterruptable power supplies (UPS) and fuel cell system. INTRODUCTION The recent development of battery powered applications is improving the need of efficient step up dc-dc converters. Keywords: DC-DC converter, cuk configuration, interleaving technique, reduced current and voltage ripple, voltage feedback, fuzzy logic controller. The performance of this system is observed in MATLAB/SIMULINK SOFTWARE. In this paper the proposal model gives high efficiency and gain with limited duty cycle and wide load variation range. The unwanted ripple content is diminished and reduction in settling time by implementing interleaved structure to cuk converter topology with current and voltage feedback control loop by using fuzzy logic controller. The objective of this paper is to analyze, simulate and examine the operation of interleaved cuk converter and to compare with conventional cuk converter using Fuzzy logic controller. Since there is no filter inductor on output side, output current of cuk converter is pulsed, which is not desirable, so it is required to improve the quality of power when DC-DC converters are employed for transferring requisite amount of power.
Conventional DC-DC converters are widely used in non-conventional power conversions namely in solar and wind power generation systems.
0 kommentar(er)
