scholarly journals Validation of Shadow Effects on Solar Photovoltaic Modules Based on Module Positioning

2020 ◽  
Vol 9 (3) ◽  
pp. 1017-1022
Keyword(s):  
Power Loss ◽  
Photoelectric Effect ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Simulation Results ◽  
Shading Effects ◽  
Load Conditions

Solar Energy is one of the cleanest forms of energy harnessed from the sunlight using semiconductors through photoelectric effect. This paper reviews the existing models to study the effect of partial shading conditions or varying irradiance on the solar modules. In this paper a PV module is simulated in Matlab/ Simulink using solar cell block from Simelectronics Library to study the effect of shadows on the output power under different panel positioning under different load conditions. The simulation results have been validated against the real time study and measurements. Both the simulation and experimental results confirm that the power loss due to shading effects in a solar photovoltaic module is influenced by the topology and the interconnection of the PV cells.

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 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 Modeling the Functioning of the Half-Cells Photovoltaic Module under Partial Shading in the Matlab Package

2020 ◽  
Vol 10 (7) ◽  
pp. 2575
Author(s):  
Mariusz T. Sarniak
Keyword(s):  
Simulation Model ◽  
Internal Structure ◽  
Photovoltaic Module ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Current Voltage ◽  
Replacement Model ◽  
Current Voltage Characteristics ◽  
Matlab Package

In this paper, the usefulness of photovoltaic modules built of half cells for partially obstructed photovoltaic (PV) installations was analyzed based on verified simulation studies. The parameters of these modules are similar to the classic, but the internal structure is different. Instead of 60 cells in a typical classic PV module, there are twice as many cells in modules with half cells. A simulation model was built in the Matlab/Simulink engineering calculations package, using the “Solar Cell” component, which is a double-diode PV cell replacement model. The simulation model reflects the internal structure of the PV module from half cells so that the output current is divided into two equal parts inside, and the structure of the module is divided into six sections. Simulation tests were performed for the same parameters that were measured during actual measurements of the current–voltage characteristics of the partially shaded PV module. Verification tests were carried out for the photovoltaic module—JAM60S03-320/PR—using the I–V 400 meter. Four different cases of partial shading of the module were verified and one for the case of no shading, but in conditions different from the standard, given by the manufacturer.

scholarly journals Design and implementation of an I-V curvetracer dedicated to characterize PV panels

2021 ◽  
Vol 11 (3) ◽  
pp. 2011
Author(s):  
Mansour Zegrar ◽  
M’hamed Houari Zerhouni ◽  
Mohamed Tarik Benmessaoud ◽  
Fatima Zohra Zerhouni
Keyword(s):  
Photovoltaic Effect ◽  
Experimental System ◽  
Experimental Results ◽  
Solar Irradiation ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Efficient Manner ◽  
Photovoltaic Modules ◽  
Curve Tracer ◽  
Current Voltage

In recent years, solar photovoltaic energy is becoming very important in the generation of green electricity. Solar photovoltaic effect directly converts solar radiation into electricity. The output of the photovoltaic module MPV depends on several factors as solar irradiation and cell temperature. A curve tracer is a system used to acquire the PV current-voltage characteristics, in real time, in an efficient manner. The shape of the I-V curve gives useful information about the possible anomalies of a PV device. This paper describes an experimental system developed to measure the current–voltage curve of a MPV under real conditions. The measurement is performed in an automated way. This present paper presents the design, and the construction of I-V simple curve tracer for photovoltaic modules. This device is important for photovoltaic (PV) performance assessment for the measurement, extraction, elaboration and diagnose of entire current-voltage I-V curves for several photovoltaic modules. This system permits to sweep the entire I-V curve, in short time, with different climatic and loads conditions. An experimental test bench is described. This tracer is simple and the experimental results present good performance. Simulation and experimental tests have been carried out. Experimental results presented good performance.

scholarly journals MPPT of PV System Under Partial Shading Conditions Based on Bio-inspired Swarm Intelligence Technique

2021 ◽  
Vol 297 ◽  
pp. 01051
Author(s):  
Mohammed Agdam ◽  
Abdallah Asbayou ◽  
Mustapha Elyaqouti ◽  
Ahmed Ihlal ◽  
Khaled Assalaou
Keyword(s):  
Swarm Intelligence ◽  
Electrical Energy ◽  
Pv System ◽  
Partial Shading ◽  
Matlab Simulink ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Maximum Current ◽  
Maximum Voltage ◽  
Intelligence Technique

To respond to the increase in demand for electricity, the use of photovoltaics is growing considerably as it produces electrical energy without polluting the environment. In addition, to enhance the efficiency of photovoltaic modules, an MPPT algorithm is required to follow the maximum voltage and maximum current in the IV curve. This technique can be achieved by using a DC-DC converter. For this purpose, various MPPT techniques have been developed. The combination of MPPT and DC-DC converter is implemented using Matlab/Simulink and connected to a modelled PV module to validate the simulation.

Investigation of Shading Characteristics of Mono-Crystalline and Poly-Crystalline Photovoltaic Modules Connected in Series

2015 ◽  
Vol 785 ◽  
pp. 220-224 ◽  
Author(s):  
Jin Chuan Teo ◽  
Rodney H.G. Tan ◽  
V.H. Mok
Keyword(s):  
Ideality Factor ◽  
Photovoltaic Module ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
In Series

This paper presents the investigation of partial shading characteristics of mono-crystalline and poly-crystalline photovoltaic module connected in series. Simulink models are developed to assist the investigation to determine the ideality factor for mono-crystalline and poly-crystalline photovoltaic module. Commercially available mono-crystalline and poly-crystalline photovoltaic module are used to extract measurable parameters for the model to study the behaviour of I-V curve. Measurements have been conducted for the investigation includingmono-crystalline only, poly-crystalline only, both unshaded, mono-crystalline shaded and poly-crystalline shaded. This paper contributes to the understanding of partial shading characteristics of different materials presence in photovoltaic string.

scholarly journals Shadow dispersion of PV Array under variable irradiance for superior power Generation by Magic Square Configuration

2018 ◽  
Vol 7 (1.8) ◽  
pp. 172 ◽  
Author(s):  
G Sreenivasa Reddy ◽  
T Bramhananda Reddy ◽  
M Vijaya Kumar
Keyword(s):  
Power Generation ◽  
Power Loss ◽  
Electrical Power ◽  
Partial Shading ◽  
Magic Square ◽  
Photovoltaic Modules ◽  
Pv Array ◽  
Pv Modules ◽  
Square Configuration ◽  
Comparison Data

The PV array generates smaller amount of the power compared with other electrical power generation components. There are many components that are adversely effected the output of PV array in such components, one is partial shading. Due to this, each module in PV array receives different solar irradiations causes different P-V characteristics of its peak values. This paper presents a pioneering method called as Magic Square configuration has been proposed to enhance the generated power of photovoltaic modules by configuring those are under affect of shade. Thus there is no change of electrical arrangement of PV modules in an array but only the objective location in the total cross tied (TCT) array is rearranged according to the magic square arrangement. Proposed paper gives comparison data with the conventional configuration method and hence the performance is calculated. The proposed technique provides a better solution that how shadow effect on the PV  modules has been reduced and how this shadow is distributed, and not only that also gives an idea  about how the inequality losses due to the partial shading is effectively reduced. The power loss of  various configurations of 3X3 and 4X4 array has been compared. The proposed technique is validated through MATLAB/Simulink environment. 

Sign in / Sign up

Export Citation Format

Share Document