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A SIMULATION STUDY OF THE EFFICIENCY OF HIGH VOLTAGE α-Si STAND-ALONE PV INSTALLATIONS

Carlos Armenta-Deu, David Arroyo del Saz

Abstract


The paper analyzes different configurations, direct-PV, PV-battery, either with PWM or MPP
regulator, and hybrid-PV, of stand-alone PV installation operating with high voltage α-Si panels that
supplies energy to a DC-AC external circuit. Global efficiency is determined as a function of voltage
conversion ratio and individual element efficiency. The paper concludes that direct-PV is the most
efficient mode with average performance ratio (PR) of 92.2% followed by PV-battery with MPPT,
68.3% of efficiency, and PWM regulator with 40.3% efficiency. Hybrid mode only achieves 30.3%. The
analysis of results shows PV-battery with PWM is suitable for DC applications while hybrid mode is
better for AC ones. PV-battery mode with MPP regulator can be used in AC or DC applications.
Intermediate voltage ratio from 24 VDC to either 110 V or 220 V represents the best option among the
three analyzed, 12 V, 24 V and 48 V.


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DOI: https://doi.org/10.37591/joaest.v12i2.5604

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