scholarly journals Design and Implementation of LED Solar Simulator

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Light Source ◽  
Pid Controller ◽  
Standard Test ◽  
Solar Simulator ◽  
Prototype Implementation ◽  
Flyback Converter ◽  
Design And Implementation ◽  
Test Conditions ◽  
Different Types

In this paper, a complete LED-based solar simulator prototype is designed and implemented. The proposed light source of this solar simulator is formed using only six different types of LEDs to simulate the AM 1.5G spectrum. In addition, the flyback converter is designed to provide the required power of the solar simulator. In order to monitor and adjust the temperature at Standard Test Conditions (STC) of 25 °C, a proposed PID controller is applied and implemented using Arduino Mega 2560. The LED-based solar simulator prototype implementation has been achieved. The performance of the solar simulator prototype has been verified and tested.

scholarly journals Investigation of the effect temperature on the performance of the photovoltaic solar design for the western Region of Paraná - Brazil

DYNA ◽  
2021 ◽  
Vol 88 (217) ◽  
pp. 185-199
Author(s):  
Oswaldo Hideo Ando Junior ◽  
Cristobal Becerra-Díaz
Keyword(s):  
Structural Characteristics ◽  
Standard Test ◽  
Comsol Multiphysics ◽  
Western Region ◽  
Temperature Decrease ◽  
Temperature Variations ◽  
Test Conditions ◽  
Different Types ◽  
Summer Temperatures ◽  
The Western Region

This paper show on impact of temperature decrease applied in Building Integrate Photovoltaics (BIPV) dimensioned on a photovoltaic solar tile with a superimposed photovoltaic arrangement model, in conditions of simulation of Standard Test Conditions for 1000 W/m2 irradiation, for maximum and minimum summer temperatures of Foz do Iguaçu city during 2017-2018. The simulation (Comsol Multiphysics®) uses different types for material tiles (concrete, polypropylene and PVC) and compares the system considering the influence of the materials in the civil-structural characteristics of the roof. The results showed that the efficiency behavior with temperature variations, produce a decrease of linear efficiency. While the, tile designs proposal has a 16% efficiency value in the datasheet in the same conditions. The results shows a decrease of efficiency and power with the increase temperature in the same conditions of the study, obtaining the respectively value of 0.05%/°C and 0.24%/°C.

scholarly journals Virtual Loom: a tool for the interactive 3D representation of historical fabrics

2021 ◽  
Author(s):  
Cristina Portalés ◽  
Manolo Pérez ◽  
Pablo Casanova-Salas ◽  
Jesús Gimeno
Keyword(s):  
Art History ◽  
3D Modelling ◽  
Current Version ◽  
Close Collaboration ◽  
Design And Implementation ◽  
Different Types ◽  
Interactive 3D ◽  
Silk Fabrics ◽  
Definition Of ◽  
3D Representations

Abstract3D modelling of man-made objects is widely used in the cultural heritage sector, among others. It is relevant for its documentation, dissemination and preservation. Related to historical fabrics, weaves and weaving techniques are still mostly represented in forms of 2D graphics and textual descriptions. However, complex geometries are difficult to represent in such forms, hindering the way this legacy is transmitted to new generations. In this paper, we present the design and implementation of SILKNOW’s Virtual Loom, an interactive tool aimed to document, preserve and represent in interactive 3D forms historical weaves and weaving techniques of silk fabrics, dating from the 15th to the 19th centuries. To that end, our tool only requires an image of a historical fabric. Departing from this image, the tool automatically subtracts the design, and allows the user to apply different weaves and weaving techniques. In its current version, the tool embeds five traditional weaving techniques, 39 weaves and six types of yarns, which have been defined thanks to close collaboration of experts in computer graphics, art history and historical fabrics. Additionally, users can change the color of yarns and produce different 3D representations for a given fabric, which are interactive in real time. In this paper, we bring the details of the design and implementation of this tool, focusing on the input data, the strategy to process images, the 3D modelling of yarns, the definition of weaves and weaving techniques and the graphical user interface. In the results section, we show some examples of image analysis in order to subtract the design of historical fabrics, and then we provide 3D representations for all the considered weaving techniques, combining different types of yarns.

Design of Remote Controller Using Code Matching and Frequency Hopping Technology

2010 ◽  
Vol 44-47 ◽  
pp. 1412-1416
Author(s):  
Geng Sheng Zheng ◽  
Cheng Liang Li
Keyword(s):  
Frequency Hopping ◽  
Work Process ◽  
Sleep State ◽  
Prototype Implementation ◽  
Design And Implementation ◽  
Emergency Condition ◽  
Channel Interference ◽  
External Conditions ◽  
System States ◽  
Remote Controller

This paper presents the design and implementation of a RF remote controller using code matching and frequency hopping technology. The proposed controller supports access to different random channels under disturbance environment. The work process of RF remote controller is composed of code matching, running state, handover state, and sleep state. Four system states can transform each other under corresponding external conditions. The suggested controller is more reliable than conventional ones especially during emergency condition such as noise and co-channel interference. The feasibility of the architecture has been demonstrated with a prototype implementation and presented in details.

scholarly journals An Improved Generalized Method for Evaluation of Parameters, Modeling, and Simulation of Photovoltaic Modules

2017 ◽  
Vol 2017 ◽  
pp. 1-19 ◽  
Author(s):  
Vandana Jha ◽  
Uday Shankar Triar
Keyword(s):  
Modeling And Simulation ◽  
Standard Test ◽  
Unknown Parameters ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Test Conditions ◽  
Pv Modules ◽  
Evaluation Of Parameters ◽  
Output Characteristics ◽  
Matlab Programming

This paper proposes an improved generalized method for evaluation of parameters, modeling, and simulation of photovoltaic modules. A new concept “Level of Improvement” has been proposed for evaluating unknown parameters of the nonlinear I-V equation of the single-diode model of PV module at any environmental condition, taking the manufacturer-specified data at Standard Test Conditions as inputs. The main contribution of the new concept is the improvement in the accuracy of values of evaluated parameters up to various levels and is based on mathematical equations of PV modules. The proposed evaluating method is implemented by MATLAB programming and, for demonstration, by using the values of parameters of the I-V equation obtained from programming results, a PV module model is build with MATLAB. The parameters evaluated by the proposed technique are validated with the datasheet values of six different commercially available PV modules (thin film, monocrystalline, and polycrystalline) at Standard Test Conditions and Nominal Operating Cell Temperature Conditions. The module output characteristics generated by the proposed method are validated with experimental data of FS-270 PV module. The effects of variation of ideality factor and resistances on output characteristics are also studied. The superiority of the proposed technique is proved.

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