Estimation of Photovoltaic Cell Parameters Using Measurement Data of Photovoltaic Module String Currents and Voltages

2022 ◽  
pp. 1-6
Author(s):  
Shigeomi Hara ◽  
Hiroshi Douzono ◽  
Makoto Imamura ◽  
Tatsuya Yoshioka
Keyword(s):  
Measurement Data ◽  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Cell Parameters

scholarly journals Estimation of Photovoltaic Cell Parameters Using Measurement Data of Photovoltaic Module String Currents and Voltages

2021 ◽  
Author(s):  
Shigeomi Hara ◽  
Hiroshi Douzono ◽  
Makoto Imamura
Keyword(s):  
Simulation Analysis ◽  
Cell Model ◽  
Measurement Data ◽  
String Model ◽  
Real Data ◽  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Cell Parameters ◽  
Operating Environments ◽  
The Difference

Photovoltac (PV) models play an important role in the simulation analysis and fault diagnosis of PV systems. The<br>single diode model (SDM) is the most frequently used model in research and applications. There are numerous proposed methods to identify the SDM parameters. However, the characteristics of PV cells alter during the lifetime in normal operating environments; these variations may be due to degradation, faults, dust, weed, and so on. Therefore, it is crucial to estimate the actual parameters of the PV cells that represent those present state. The contribution of this study is to propose a method to estimate PV cell parameters on the basis of the measurement data regarding the currents and voltages of the PV module strings. A PV string model is described on the basis of the adaptive SDM for the PV cells in the system, and the parameters of each cell model are obtained by minimizing the difference between the measured string voltages and the string voltages computed by the model. The application of the proposed method to real data measured in a PV power plant is also presented to evaluate the proposed method.

scholarly journals Estimation of Photovoltaic Cell Parameters Using Measurement Data of Photovoltaic Module String Currents and Voltages

2021 ◽  
Author(s):  
Shigeomi Hara ◽  
Hiroshi Douzono ◽  
Makoto Imamura
Keyword(s):  
Simulation Analysis ◽  
Cell Model ◽  
Measurement Data ◽  
String Model ◽  
Real Data ◽  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Cell Parameters ◽  
Operating Environments ◽  
The Difference

Photovoltac (PV) models play an important role in the simulation analysis and fault diagnosis of PV systems. The<br>single diode model (SDM) is the most frequently used model in research and applications. There are numerous proposed methods to identify the SDM parameters. However, the characteristics of PV cells alter during the lifetime in normal operating environments; these variations may be due to degradation, faults, dust, weed, and so on. Therefore, it is crucial to estimate the actual parameters of the PV cells that represent those present state. The contribution of this study is to propose a method to estimate PV cell parameters on the basis of the measurement data regarding the currents and voltages of the PV module strings. A PV string model is described on the basis of the adaptive SDM for the PV cells in the system, and the parameters of each cell model are obtained by minimizing the difference between the measured string voltages and the string voltages computed by the model. The application of the proposed method to real data measured in a PV power plant is also presented to evaluate the proposed method.

scholarly journals Analysis of Power Generation for Solar Photovoltaic Module with Various Internal Cell Spacing

2021 ◽  
Vol 13 (11) ◽  
pp. 6364
Author(s):  
June Raymond L. Mariano ◽  
Yun-Chuan Lin ◽  
Mingyu Liao ◽  
Herchang Ay
Keyword(s):  
Power Output ◽  
Spacing Effect ◽  
Photovoltaic Cell ◽  
Standard Test ◽  
Photovoltaic Module ◽  
Solar Pv ◽  
Engineering Software ◽  
Internal Cell ◽  
Cell Spacing ◽  
Pv Module

Photovoltaic (PV) systems directly convert solar energy into electricity and researchers are taking into consideration the design of photovoltaic cell interconnections to form a photovoltaic module that maximizes solar irradiance. The purpose of this study is to evaluate the cell spacing effect of light diffusion on output power. In this work, the light absorption of solar PV cells in a module with three different cell spacings was studied. An optical engineering software program was used to analyze the reflecting light on the backsheet of the solar PV module towards the solar cell with varied internal cell spacing of 2 mm, 5 mm, and 8 mm. Then, assessments were performed under standard test conditions to investigate the power output of the PV modules. The results of the study show that the module with an internal cell spacing of 8 mm generated more power than 5 mm and 2 mm. Conversely, internal cell spacing from 2 mm to 5 mm revealed a greater increase of power output on the solar PV module compared to 5 mm to 8 mm. Furthermore, based on the simulation and experiment, internal cell spacing variation showed that the power output of a solar PV module can increase its potential to produce more power from the diffuse reflectance of light.

scholarly journals A dynamic model for series and parallel resistance of photovoltaic cell using material properties extraction and energy tunnel

2017 ◽  
Vol 16 (1) ◽  
pp. 9-21
Author(s):  
Kotchapong Sumanonta ◽  
Pasist Suwanapingkarl ◽  
Pisit Liutanakul
Keyword(s):  
Series Resistance ◽  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Practical Application ◽  
Pv Module ◽  
Proposed Model ◽  
Outdoor Test ◽  
The Relationship ◽  
Parallel Resistance ◽  
Novel Model

This article presents a novel model for the equivalent circuit of a photovoltaic module. This circuit consists of the following important parameters: a single diode, series resistance (Rs) and parallel resistance (Rp) that can be directly adjusted according to ambient temperature and the irradiance. The single diode in the circuit is directly related to the ideality factor (m), which represents the relationship between the materials and significant structures of PV module such as mono crystalline, multi crystalline and thin film technology.  Especially, the proposed model in this article is to present the simplified model that can calculate the results of I-V curves faster and more accurate than other methods of the previous models. This can show that the proposed models are more suitable for the practical application. In addition, the results of the proposed model are validated by the datasheet, the practical data in the laboratory (indoor test) and the onsite data (outdoor test). This ensures that the less than 0.1% absolute errors of the model can be accepted.

A Case Study of Developing SEMI PV Standards in Taiwan (2009~2014)

2017 ◽  
Vol 870 ◽  
pp. 231-236
Author(s):  
Shu Tsung Hsu ◽  
Yean San Long ◽  
Teng Chun Wu
Keyword(s):  
Task Force ◽  
Photovoltaic Cell ◽  
Test Methods ◽  
Technical Committee ◽  
Photovoltaic Module ◽  
Specific Test ◽  
Series Of Experiments ◽  
Set Up ◽  
Cell Module

This work aims to analysis the SEMI PV standards developed in Taiwan during 2009 to 2014. The major technical committee (TC) and task force (TF) include Photovoltaic Technical Committee (2009), Photovoltaic Module Vibration TF (2010), Photovoltaic Cell Vibration TF (2011), Package Performance TF (2012), OPV and DSSC TF (2013), BIPV TF (2013) and Reliability TF (2014). ITRI coordinated these TFs to set up a series of experiments and discussions, which focused on the performance evaluation for PV cell, module and materials. The TFs have developed four standards include SEMI PV23 (2011), SEMI PV38 (2012), SEMI PV56 (2014) and SEMI PV57 (2014). Through these standardizations, some specific test methods and test flows were completed to evaluate the reliability for both c-Si and organic/inorganic PV products, which are helpful to improve the performances of cell and module, and propose the common testing guidelines for PV industry to refer to when desired.

Hybrid Optimization Approach for Evaluating Photovoltaic Cell Parameters

2013 ◽  
Vol 373-375 ◽  
pp. 1261-1264
Author(s):  
Mei Ying Ye
Keyword(s):  
Cell Model ◽  
Computation Time ◽  
Photovoltaic Cell ◽  
Evaluation Procedure ◽  
Model Parameters ◽  
Optimization Approach ◽  
Problem Space ◽  
Local Optima ◽  
Cell Parameters ◽  
Intelligent Technique

A new hybrid intelligent technique is proposed to evaluate photovoltaic cell model parameters in this paper. The intelligent technique is based on a hybrid of genetic algorithm (GA) and LevenbergMarquardt algorithm (LMA). In the proposed hybrid intelligent technique, the GA firstly searches the entire problem space to get a set of roughly estimated solutions, i.e. near-optimal solutions. Then the LMA performs a local optima search in order to carry out further optimizations. An example has been used to demonstrate the evaluation procedure in order to test the performance of the proposed approach. The results show that the proposed technique has better performance than the GA approach in terms of the objective function value, the computation time and the reconstructedI-Vcurve shape.

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.

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