scholarly journals Effects of Reflectance of Backsheets and Spacing between Cells on Photovoltaic Modules

2022 ◽  
Vol 12 (1) ◽  
pp. 443
Author(s):  
Hyunsoo Lim ◽  
Seong Hyeon Cho ◽  
Jiyeon Moon ◽  
Da Yeong Jun ◽  
Sung Hyun Kim
Keyword(s):  
Output Power ◽  
Manufacturing Process ◽  
Power Loss ◽  
Power Efficiency ◽  
Loss Rate ◽  
Optical Loss ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Pv Cell ◽  
In Series

In the photovoltaic (PV) module manufacturing process, cell-to-module (CTM) loss is inevitably caused by the optical loss, and it generally leads to the output power loss of about 2~3%. It is known that the CTM loss rate can be reduced by increasing the reflectance of a backsheet and reflective area through widening spaces between the PV cell strings. In this study, multi-busbars (MBB) and shingled PV cells were connected in series, and a mini-module composed of four cells was fabricated with a white and black backsheet to investigate the effects of reflectance of backsheets and space between the PV cells. Moreover, the MBB modules with cell gap spaces of 0.5 mm, 1.5 mm, and 2.5 mm were demonstrated with fixed 3 mm spaces between the strings. The shingled modules with varying spaces from 2 mm to 6 mm were also tested, and our results show that spacing between PV cells and strings should be well-balanced to minimize the CTM loss to maximize the output power (efficiency).

Design of High-Power and High-Density Photovoltaic Modules Based on a Shingled Cell String

2020 ◽  
Vol 20 (11) ◽  
pp. 6996-7001
Author(s):  
Ji-Su Park ◽  
Won-Je Oh ◽  
Jang-Hun Joo ◽  
Jun-Sin Yi ◽  
Byung-You Hong ◽  
...  
Keyword(s):  
Output Power ◽  
High Power ◽  
High Density ◽  
Limited Area ◽  
High Output Power ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Building Integrated Photovoltaic ◽  
In Series ◽  
High Output

Building-integrated photovoltaic (BIPV) arrays, which are installed on the roofs of buildings as part of urban solar power generation, have created a demand for high-power and high-density photovoltaic (PV) modules to produce high-output power in a limited area. In this paper, a high-power PV module using a shingles technology is designed. When the vertical and horizontal dimensions of the module were 201.78 cm × 96.75 cm in the same area as that of the conventional PV module, the number of cell strips reached 390. When six 65-interconnection shingled strings were connected in series, the output power of 367.8 W was achieved. Compared with a conventional PV module of the same area, the output power was 8% greater.

Modelling and Simulation of Solar Photovoltaic Cell for Different Insolation Values Based on MATLAB/Simulink Environment

2014 ◽  
Vol 550 ◽  
pp. 137-143 ◽  
Author(s):  
S. Narendiran ◽  
Sarat Kumar Sahoo
Keyword(s):  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Electrical Characteristics ◽  
Array Type ◽  
Matlab Simulink ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Current Input ◽  
In Series

The paper discuss about the modelling and electrical characteristics of photovoltaic cell and its array type of construction in matlab-simulink environment at different insolation levels. The photovoltaic module is modelled using the diode electrical characteristic equation. The photovoltaic cell is analysed by voltage input and current input modules, The voltage and current input photovoltaic modules are simulated with different insolation values by varying the construction of PV modules. The results conclude that the current input PV module is well suited for applications were it shares same current when connected in series and voltage input PV module, where it shares same voltage when connected in parallel.

scholarly journals Analysis of Power Loss for Crystalline Silicon Solar Module during the Course of Encapsulation

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Hong Yang ◽  
He Wang ◽  
Dingyue Cao ◽  
Dangmin Sun ◽  
Xiaobao Ju
Keyword(s):  
Output Power ◽  
Power Loss ◽  
Crystalline Silicon ◽  
Maximum Output Power ◽  
Total Power ◽  
Maximum Output ◽  
Solar Module ◽  
In Series ◽  
Encapsulation Process ◽  
First Time

During the course of solar module encapsulation, the output power of crystalline silicon solar module is less than the sum of the maximum output power of the constituents because of power loss. So it is very important to investigate the power loss caused by encapsulation materials and module production process. In this paper, the power loss of crystalline silicon solar module is investigated by experiments systematically for the first time. It is found that the power loss is mainly caused by the resistance of ribbon and mismatch of solar cells; the total power loss is as high as 3.93% for solar module composed of 72 cells (125 mm × 125 mm) connected in series. Analyzing and reducing the power losses are beneficial to optimizing encapsulation process for the solar module. The results presented in this study give out a direction to decreasing power loss and optimizing encapsulation process of crystalline silicon solar module.

Modelling and Simulation of Solar PV Array Field Incorporated with Solar Irradiance and Temperature Variation to Estimate Output Power of Solar PV Field

2015 ◽  
Vol 3 (2) ◽  
pp. 251-257
Author(s):  
Vishwesh Kamble ◽  
Milind Marathe
Keyword(s):  
Temperature Variation ◽  
Output Power ◽  
Power Plants ◽  
Solar Pv ◽  
Pv Systems ◽  
Dc Power ◽  
Pv Module ◽  
Simulation Based ◽  
Pv Cell ◽  
The Mathematical Model

Photovoltaic systems are designed to feed either to grid or direct consumption. Due to global concerns, significant growth is being observed in Grid connected solar PV Plants. Since the PV module generates DC power, inverter is needed to interface it with grid. The power generated by a solar PV module depends on surrounding such as irradiance and temperature. This paper presents modelling of solar PV arrays connected to grid-connected plant incorporated with irradiance and temperature variation, to design simulator to study and analyse effect on output power of solar PV arrays with irradiance and temperature variation, also to estimate the output power generated by PV arrays. The mathematical model is designed implemented separately on simulator for each PV components connected in PV systems, which are PV cell, Module, sting, array and field of arrays. The results from simulation based on model are verified by the data collected from power plants and experiments done on solar PV cell.

scholarly journals Performance Comparison of Mismatch Power Loss Minimization Techniques in Series-Parallel PV Array Configurations

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 874 ◽  
Author(s):  
Ahmed Mansur ◽  
Md. Amin ◽  
Kazi Islam
Keyword(s):  
Output Power ◽  
Power Loss ◽  
Weather Condition ◽  
Performance Comparison ◽  
Array Configuration ◽  
Pv Array ◽  
Pv Modules ◽  
In Series ◽  
Simulation Results ◽  
Array Output

The mismatch in current-voltage (I-V) characteristics of photovoltaic (PV) modules causes significant power loss in a large PV array, which is known as mismatch power loss (MML). The PV array output power generation can be improved by minimizing MML using different techniques. This paper investigates the performance of different module arrangement techniques to minimize MML both for long series string (LSS) and long parallel branch (LPB) in series-parallel (SP) array configurations at uniform irradiance condition. To investigate the significance of MML LSS-SP configuration with dimensions: 1 × 40, 2 × 20, 4 × 10, 5 × 8 and LPB-SP configuration with dimensions: 40 × 1, 20 × 2, 10 × 4, 8 × 5 were used. A comparative analysis is made to find the effectiveness of MML reduction techniques on PV arrays with three different power ratings. Simulation results show that the PV modules arrangement obtained by the genetic algorithm (GA) and current based arrangement (Im) performed better than the arrangements obtained by all other techniques in terms of PV array output power and MML minimization. The performance of the proposed technique was analyzed for both LSS-SP and LPB-SP array configurations in 400 W, 3400 W, and 9880 W arrays. To substantiate the simulation results experiment was performed using a 400 W PV array in outdoor weather condition and obtained similar results. It was also observed that the percentage of recoverable energy (%RE) obtained by arranging the modules using the GA method was higher than Im based method for both LSS-SP and LPB-SP array configurations. A maximum %RE of 4.159 % was recorded for a 5 × 8 LSS-SP array configuration by applying the GA based MML reduction method.

scholarly journals Improving the Efficiency of Partially Shaded Photovoltaic Modules without Bypass Diodes

Electronics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1046
Author(s):  
Anas Al Tarabsheh ◽  
Muhammad Akmal ◽  
Mohammed Ghazal
Keyword(s):  
Power Loss ◽  
Output Current ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Performance Reduction ◽  
Mode 2 ◽  
Pv Modules ◽  
Connection Type ◽  
Mode 3

Photovoltaic (PV) modules comprise bypass diodes to limit hotspot formation. However, they suffer from performance reduction in the presence of partial shading. This paper proposes external circuitry to control the connection type (series/parallel) of the PV cells through a pair of on/off switches resulting in three different operation modes. Mode 1 represents the typical 36 series-connected cells, while mode 2 represents two parallel-connected strings, and mode 3 maximizes the output current where the four strings are connected in parallel. The added values of the approach are that (1) the output current of the PV module can be increased without the need for a buck-boost converter and (2) the partial shading has less impact on the output power than the adoption of bypass diodes. This work shows that simulating three monocrystalline PV modules (120 W, 200 W, and 241 W), consisting of 36, 60, and 72 series-connected cells, lose about 74% when one cell has 80% shading in the absence of bypass diodes. The application of a bypass diode for each pair of strings in the PV module improves this decrease to 61.89%, 40.66%, and 39.47%, respectively. According to our proposed approach, this power loss can be significantly decreased to 19.59%, 50%, and 50.01% for the three PV modules, respectively, representing more than a 42% improvement compared to bypass diodes.

scholarly journals Effect of Colour Spectrum and Plastic on the Performance of PV Solar System

2019 ◽  
Vol 8 (4) ◽  
pp. 10843-10846
Keyword(s):  
Output Power ◽  
High Efficiency ◽  
Solar Irradiation ◽  
Solar Pv ◽  
Primary Input ◽  
Pv Panel ◽  
Pv Module ◽  
Pv Cell ◽  
Different Types ◽  
Two Factors

Solar irradiation is the primary input for the solar PV module. Different types of PV module are used to get high efficiency such as polycrystalline, monocrystalline and amorphous PV module . Among all module polycrystalline PV cell is the most reliable one. Two valuable inputs of a solar PV cell are solar irradiation and temperature. For temperature, solar PV material is very sensitive. However, solar irradiation has many types of wavelengths, and each wavelength has a different effect on solar cell because each wavelength has different energy frequency. Energy frequency is the primary term which affects the output of PV panel.so in this paper two types of experimental analysis has done to know the effect of the colour spectrum, and another experiment has done to know the effect of different types of plastic on PV panel. The experimental data used to verify the efficiency and output power of the system. The results show how the output power and efficiency of PV affected by these two factors.

scholarly journals Study on Mitigation Method of Solder Corrosion for Crystalline Silicon Photovoltaic Modules

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Ju-Hee Kim ◽  
Jongsung Park ◽  
Donghwan Kim ◽  
Nochang Park
Keyword(s):  
Crystalline Silicon ◽  
Corrosion Mechanism ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Oxidation Reduction ◽  
Voltage Mapping ◽  
Current Voltage ◽  
Pv Modules ◽  
Mapping Analysis ◽  
In Series

The corrosion of 62Sn36Pb2Ag solder connections poses serious difficulties for outdoor-exposed photovoltaic (PV) modules, as connection degradation contributes to the increase in series resistance (RS) of PV modules. In this study, we investigated a corrosion mitigation method based on the corrosion mechanism. The effect of added sacrificial metal on the reliability of PV modules was evaluated using the oxidation-reduction (redox) reaction under damp heat (DH) conditions. Experimental results after exposure to DH show that the main reason for the decrease in power was a drop in the module’s fill factor. This drop was attributed to the increase ofRS. The drop in output power of the PV module without added sacrificial metal is greater than that of the sample with sacrificial metal. Electroluminescence and current-voltage mapping analysis also show that the PV module with sacrificial metal experienced less degradation than the sample without sacrificial metal.

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