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Design and control of power converter for LED lighting driven from the PV module

Extraction of electric power from solar PV module for lighting applications is highly beneficial in the off-grid areas. A highly reliable and cost effective power converter with the effective control strategy is required to drive the LED lamp for the household applications. This paper proposes a power converter which is suitable to supply the lighting load under different conditions. Based on the availability of intensity of solar radiation, battery charge level and the load requirement, four states of operation each with two modes have been analyzed. Suitable control algorithm with an integration of MPPT and charge controller is implemented for closed loop control of the proposed converter. Simulation results based on Matlab/ Simulink prove the effectiveness of the proposed power converter to improve the reliability and economic implications of the existing system.