HIGH GAIN DC-DC CONVERTER WITH LOAD REGULATION

Sreehari G Nair, Reshma M, Kshemada Devi .V, Sheeja G

Abstract: High gain dc-dc converters are gaining importance due to the latest trends in extracting power from renewable energies. The most commonly available renewable energy resources are wind and solar. The voltage developed while tapping energy from these sources are very low. Often the load requires larger than the voltage developed by the renewable sources which necessitates a high gain DC-DC converter with moderate duty ratio. Conventional boost converter cannot achieve ultra high voltage gain at moderate duty ratio. The aim of designing engineers is to obtain converters with high gain with moderate duty ratio, reduced switch stress, and cost. Here a single switch non isolated dc-dc converter with capacitor-diode voltage multiplier topology is presented. A 30W prototype of the converter is designed and closed loop simulation is conducted to explain the effectiveness of the controller at different load condition to obtain regulated output.

Keywords: Boost Converter, Single Switch Converter, PI-controller, Voltage Regulation.

DOI: https://doi.org/10.15623/ijret.2015.0406037