scholarly journals Outdoor Performance Characterization of the Poly-crystalline Silicon Solar Module

2018 ◽  
Vol 16 (1) ◽  
pp. 13-19
Author(s):  
Indra Bahadur Karki
Keyword(s):  
Temperature Coefficient ◽  
Crystalline Silicon ◽  
Short Circuit ◽  
Outdoor Environment ◽  
Positive Temperature ◽  
Solar Pv ◽  
Solar Module ◽  
Performance Characterization ◽  
Pv Module

The outdoor performance characterization of the poly-crystalline silicon solar PV module was studied. Daily solar illumination data were measured using two pyranometers and analyzed together with the module output power. The present paper reports the temperature dependencies of full-spectrum photovoltaic parameters for poly-crystalline PV module. The measurements were performed under outdoor environment conditions. The most interesting feature that was observed for these devices is that above a cell temperature of 20 0C the positive temperature coefficient observed for the short-circuit current exceeds in magnitude the negative temperature coefficient that was found for the open-circuit voltage. This means that, unlike the situation for conventional PV module, these cells actually exhibit decrease in efficiency with increasing temperatureJournal of Science Foundation 2018;16(1):13-19

Outdoor Performance Characterization of Multi-Crystalline Silicon Solar Module

2012 ◽  
Vol 12 (18) ◽  
pp. 1953-1959 ◽  
Author(s):  
S. Parthasara ◽  
P. Neelamegam ◽  
P. Thilakan
Keyword(s):  
Crystalline Silicon ◽  
Solar Module ◽  
Performance Characterization

scholarly journals Effect of Temperature on the I-V Characteristics of a Polycrystalline Solar Cell

2016 ◽  
Vol 3 (1) ◽  
pp. 35 ◽  
Author(s):  
Indra Bahadur Karki
Keyword(s):  
Temperature Coefficient ◽  
Short Circuit ◽  
Negative Temperature ◽  
Short Circuit Current ◽  
Positive Temperature Coefficient ◽  
Open Circuit ◽  
Outdoor Environment ◽  
Effect Of Temperature ◽  
Positive Temperature ◽  
Full Spectrum

<p>The present paper reports the temperature dependencies of full-spectrum photovoltaic parameters for poly-crystalline PV module. The measurements were performed under outdoor environment conditions. The most interesting feature that was observed for these devices was that above a cell temperature of 20°C the positive temperature coefficient observed for the short-circuit current exceeds in magnitude the negative temperature coefficient that was found for the open-circuit voltage. This means that, unlike the situation for conventional PV devices, these cells actually exhibit decrease in efficiency with increasing temperature (reaching a value of 0.05 % at 60°C).</p><p>Journal of Nepal Physical Society Vol.3(1) 2015: 35-40</p>

The Effect of Concentrated Light Intensity on Temperature Coefficient of the InGaP/InGaAs/Ge Triple-Junction Solar Cell

2015 ◽  
Vol 8 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Zilong Wang ◽  
Hua Zhang ◽  
Wei Zhao ◽  
Zhigang Zhou ◽  
Mengxun Chen
Keyword(s):  
Solar Cell ◽  
Light Intensity ◽  
Temperature Dependence ◽  
Temperature Coefficient ◽  
Triple Junction ◽  
Concentration Ratio ◽  
Crystalline Silicon ◽  
Photovoltaic System ◽  
Solar Pv ◽  
Junction Solar Cell

Research on automatic tracking solar concentrator photovoltaic systems has gained increasing attention in developing the solar PV technology. A paraboloidal concentrator with secondary optic is developed for a three-junction GaInP/GalnAs/Ge solar cell. The concentration ratio of this system is 200 and the photovoltaic cell is cooled by the heat pipe. A detailed analysis on the temperature coefficient influence factors of triple-junction solar cell under different high concentrations (75X, 100X, 125X, 150X, 175X and 200X) has been conducted based on the dish-style concentration photovoltaic system. The results show that under high concentrated light intensity, the temperature coefficient of Voc of triple-junction solar cell is increasing as the concentration ratio increases, from -10.84 mV/°C @ 75X growth to -4.73mV/°C @ 200X. At low concentration, the temperature coefficient of Voc increases rapidly, and then increases slowly as the concentration ratio increases. The temperature dependence of η increased from -0.346%/°C @ 75X growth to - 0.103%/°C @ 200X and the temperature dependence of Pmm and FF increased from -0.125 W/°C, -0.35%/°C @ 75X growth to -0.048W/°C, -0.076%/°C @ 200X respectively. It indicated that the temperature coefficient of three-junction GaInP/GalnAs/Ge solar cell is better than that of crystalline silicon cell array under concentrating light intensity.

scholarly journals A Data Acquisition System for Solar PV Module with Variable Load

2017 ◽  
Vol 65 (1) ◽  
pp. 67-72
Author(s):  
Md Habibur Rahman ◽  
Nasif Shams ◽  
Gour Chand Mazumder ◽  
Saiful Huque
Keyword(s):  
Data Acquisition ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Operating Point ◽  
Variable Load ◽  
Solar Pv ◽  
Design Development ◽  
Pv Module

This paper describes the design, development and performance of a locally developed data acquisition system for solar PV module with variable load. The system can automatically change the operating point of a PV module and acquire the output voltage and load current into computer and then analyze. To change the operating point, a variable load has been developed by IRF250 MOSFETs. The current drawn by the load from the PV module is controlled by a staircase voltage, which is developed by a counter and a DAC. The count value of the counter and hence the voltage level of the staircase is changed by an Arduino-based controlling unit. To get the short-circuit current, the PV module is connected in series with a high ampere power supply and the voltage across the PV module is conditioned by a difference amplifier and fed to an ADC channel of the controlling unit. The output current of the PV module has been sensed by a Hall sensor, ACS712, and read by another ADC channel. To make the whole system automatic, a program has been developed using Arduino IDE and loaded in the Arduino board. With the help of this program, the system can measure the current and voltage of the PV module and send to a PC. This acquired data is processed by software and the performance of the PV module is obtained. The system has been developed in laboratory and its performance has been studied. Although, there are some fluctuations in the acquired data but with filtration satisfactory performance is obtained. This instrument can be used for PV module testing purpose. Dhaka Univ. J. Sci. 65(1): 67-72, 2017 (January)

scholarly journals Impacts of Cloud Cover and Dust on the Performance of Photovoltaic Module in Niamey

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Abdoulatif Bonkaney ◽  
Saïdou Madougou ◽  
Rabani Adamou
Keyword(s):  
Cloud Cover ◽  
Photovoltaic Module ◽  
Energy Yield ◽  
Solar Pv ◽  
Solar Module ◽  
Pv Module ◽  
Long Term Effect ◽  
Daily Energy ◽  
Dust Accumulation

The sensitivity of monocrystalline solar module towards dust accumulation and cloud cover is investigated from May to August 2015 for Niamey’s environment. Two solar modules with the same characteristics have been used to assess the impacts of the dust on the solar PV module. One of the modules is being cleaned every morning and the second one was used for monitoring the effect of dust accumulation onto the surface of the unclean module for May and June. Results show that dust accumulation has a great effect on decreasing the daily energy yield of the unclean module. But this effect is a long-term effect. For the cloud cover, the effect is immediate. It was estimated that exposing the module into the environment in 23 days in June 2015 has reduced the daily energy yield by 15.29%. This limitation makes solar PV an unreliable source of power for remote devices and thus strongly suggests the challenges of cleaning the module’s surface regularly.

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