Comparative Analysis of Buck Converter and Mo...

Comparative Analysis of Buck Converter and Modified Interleaved Buck Converter for Standalone Wind Energy System

Author Name : Ashwini A. Patil, D. S. Chavan,

This paper presents comparative analysis of buck converter and interleaved buck converter for standalone wind energy system. The comparisons of both converters are on the basis of harmonics, power factor, efficiency and output voltage. As compare to buck converter the modified interleaved buck converter is better. Because the disadvantages of buck converter are more. In buck converter switching losses inductor ac losses are more also efficiency is less. Power density is also less. Power factor of buck converter is less as compare to modified interleaved converter. Also there are disadvantages of conventional interleaved buck converter like less efficiency, high switching losses, high cost. In Modified interleaved buck converter switches are connected in series also capacitor provides power path. As the modified interleaved buck converter works in continuous conduction mode so the current stress is less. The voltage stress across switches is half of input voltage before switch on and switch off conditions. So the switching losses are less and efficiency is also high. Control logic is implemented for controlling the buck converter. Proportional integral derivative controller is used in modified interleaved buck converter. Simulation results verify the difference between buck converters modified interleaved buck converter. By using MATLAB/ SIMULINK the proposed system is modeled.