IJREE – Volume 5 Issue 1 Paper 2

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PV SYSTEM UNDER PARTIAL SHADING CONDITION TO IMPROVE THE GENERATING POWER BY USING SINGLE SENSOR BASED MPPT

Author’s Name :  M Manickaraj | K Ramamoorthi

Volume 05 Issue 01  Year 2018  ISSN No: 2349-2503  Page no: 5-7

12

Abstract:

Power processing converters and voltage equalizers have been proposed and used for photovoltaic (PV) string comprising multiple modules/substrings connected in series in order to preclude negative influences of partial shading in differential method. The single-switch voltage equalizer using multi-stacked special converters can significantly reduce the necessary switch count compared to that of conventional topologies, achieving simplified circuitry. However, multiple current sensors are necessary for this single-switch equalizer to effectively perform equalization. In this paper, a current Sensorless equalization technique (?V-controlled equalization) is presented. The equalization strategy using the ?V-controlled equalization is explained and discussed on the basis of comparison with current-controlled equalization strategies for improved the output power. Experimental equalization tests emulating partial-shading conditions were performed using the single- sensor based mppt and its equalizer employing the ?V-controlled equalization. Negative impacts of partial-shading were successfully precluded, demonstrating the efficacy of the proposed special converters is used.

Keywords:

Photovoltaic Modules, Special Converters , Sensors, and So on

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