Design of an Efficient Positive Output Self-Lift and Negative Output Self-Lift Luo Converters using Drift Free Technique for Photovoltaic Applications

DC-DC converter plays a vital role in recent years due to its development in generation of electrical power by using renewable energy resources such as solar, wind etc. Fundamental DC-DC converter with Maximum Power Point Tracking (MPPT) technique in solar applications gives poor output power density due to the changeable sunlight and weather condition. In this work a Positive Output Self-Lift Luo Converter (POSLLC) and a Negative Output Self-Lift Luo Converter (NOSLLC) with Drift Free MPPT Technique has been designed and simulated using MATLAB/Simulink Software. Results demonstrate that the Drift Free MPPT Technique along with POSLLC and NOSLLC has the ability to track maximum power even in fast changing weather conditions. Further, the output voltage of a POSLLC and a NOSLLC are ten times greater than that of the input given to the converters.