CD Tesis
Analisa Peningkatan Efisiensi Dan Unjuk Kerja Modul Pv Berdasarkan Penggunaan Coating Anti Reflective Dan Perlakuan Intensitas Serta Suhu
Photovoltaic (PV) modules are devices that can convert sunlight into
electrical energy. PV module performance can be improved by providing an antireflection
coating in the form of a coating. In addition, PV module performance is
also influenced by the intensity, temperature and value of parasitic internal
resistance which consists of internal resistance (Rs and Rsh). This parameter is
determined by measuring the current and voltage I (V) of the PV module by varying
the value of the load resistance from 0 to 100 and determining three important
points from the I-V curve, namely Isc, Voc and MPP. In this study, polycrystalline
PV modules were characterized in two conditions, with and without 3M Glass Thin
type AR coating. The current and voltage of the PV module are acquired using the
INA-219 current sensor in an interval of less than 5 minutes. Characterization I(V)
was tested based on variations in sunlight intensity and surface temperature of the
PV module by irradiating a 500 Watt Philips Halogen flood light controlled by a
Hereous Oven. The surface temperature distribution of the PV module is simulated
with COMSOL software.
Based on the results of characterization I (V) PV modules coated with AR
coating with variations in intensity produce greater power than without coating.
The efficiency value () increases with increasing power, where the PV module
coated with AR coating has a greater efficiency value than without AR coating. This
is because the coating layer has low absorbance properties which effectively reduce
the reflectivity of the glass surface. PV modules that were coated with an AR coating
experienced an increase in efficiency by 2.5%, 1.8% and 1.6% after being given AR
coating at intensities of 800 W/m2, 600 W / m2 and 500 W/m2, respectively. The
intensity variation also causes the Rs and Rsh values to change but not significantly,
where the largest changes in the Rs and Rsh values in coated PV modules are 1.9%
and 0.83%.
The temperature distribution on the surface of the PV module generates more
heat in the middle of the PV module than the edges, this is because the halogen
lamp is placed right above the center of the module. This temperature variation
affects the resulting Voc value where this value decreases as the surface
temperature of the PV module increases, causing a decrease in output power.
Maximum value of power at a temperature of 40C is 3.75%. The Rs value on the
PV module that was coated with AR was changed by 4.5%, 4% and 3.57% and the
Rsh value changed by 0.9%, 0.18% and 1.0% respectively at 40C, 50C and 60C.
This indicates that temperature, intensity and the addition of coatings do not
significantly affect the values of Rs and Rsh.
Keywords: PV module, AR coating, intensity, temperature, efficiency and internal
resistance value
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