Exergy, Energy, and Dynamic Parameter Analysis of Indigenously Developed Low-Concentration Photovoltaic System

摘要

Piecewise linear parabolic trough collector (PLPTC) is designed and developed toconcentrate solar radiation on monocrystalline silicon based photovoltaic module. Atheoretical model is used to perform electrical energy and exergy analysis of low-concentrationphotovoltaic (LCPV) system working under actual test conditions (ATC). The exergy efficiency of LCPV system is in the range from 5.1% to 4.82% with increasingrate of input exergy rate from 30.81 W to 96.12 W, when concentration ratio changes from 1.85 to 5.17 Sun. Short-circuit current shows increasing trend with increasing input exergyrate of≈0.011 A/W. Power conversion efficiency decreases from 7.07 to 5.66%, and open-circuitvoltage decreases from 9.86 to 8.24 V with temperature coefficient of voltage≈-0.021 V/K under ATC. The results confirm that the commercially available silicon solarPV module performs satisfactorily under low concentration.