Software Tool for Evaluation of Electrical Energy Produced by Photovoltaic Systems

2012 ◽  
Vol 49 (4) ◽  
pp. 383-401 ◽  
Author(s):  
Goran Dobrić ◽  
Željko Durišić ◽  
Zlatan Stojković

This paper presents a software tool for evaluation of electrical energy generated by photovoltaic (PV) systems. The software was developed using the MATLAB software package and contains the elements of an expert system. The software is designed for engineers who are involved in photovoltaic system design and for students (undergraduates and Masters) of electrical engineering who, using the software, adopt theoretical assumptions and solve practical engineering problems. The structure, organization and software capabilities are illustrated within the example of the design of an actual photovoltaic system.

Author(s):  
L. Bouhaki ◽  
R. Saadani ◽  
R. Agounoun ◽  
K. Sbai ◽  
M. Rahmoune

Photovoltaic (PV) systems are the most promising renewable energy source in Morocco due to its abundant solar irradiation. The Moroccan government has launched various renewable energy programs to encourage the use of PV systems. In this work we present a comparative study in terms of energy produced and the efficiency of a grid connected photovoltaic (PV) system installed on the roof of the building occupied by the “Ecole Supérieure de Technologie de Meknes” (ESTM). The on-grid connected photovoltaic system has a total power of 5860 Watts (Wp). This system provides an average daily reduction of 30 kWh in the consumption of electrical energy at ESTM facilities; this will allow us to save fossil fuels and reduce emissions of greenhouse gas. The average annual production of electric power is estimated at 10.5 MWh, equivalent to burning 0.9 tons of oil, which will prevent the emission of about 2 tons / year of CO2 in the atmosphere. Three different commercial solar modules, manufactured with different materials and technologies in monocrystalline silicon, polycrystalline silicon and amorphous silicon were tested.


Author(s):  
Ahmed Bouraiou ◽  
Ammar Neçaibia ◽  
Rachid Dabou ◽  
Abderrezzaq Ziane ◽  
Nordine Sahouane ◽  
...  

The electrical energy generation via the Photovoltaic system is widely utilized in the world especially in the countries where it is characterized by considerable potential of solar energy. PV systems are affected by several factors that can reduce its efficiency such as PV generator aging, failures. Photovoltaic systems monitoring is a important task for guaranteeing the reliability and stability of PV system operation. This paper addresses the monitoring of PV systems in renewable energy research unit in the Saharan region (URERMS) Adrar, through to give an insigth about the methods of measuring, acquisition, data storage of monitored parameters. In addition, the existing problems for insuring the suitable solution.


Author(s):  
A. Bosch ◽  
H. P. Hoenes ◽  
A. Jossen ◽  
H. Karl ◽  
G. Lehner ◽  
...  

Author(s):  
Mandeep Guragain ◽  
Kalyan Rapolu ◽  
Pritpal Singh

A single comprehensive software package was developed for architects and building designers to optimize suitable location on various fac¸ades of urban buildings, where when photovoltaic modules were placed, would generate maximum energy. AutoCAD, the most widely used software by building architects, along with the ECOTECT, a building analysis tool, were used as primary tools in this software package. The process of solar analysis was automated with the help of customizing tools such as LISP, Visual Basic for Application and LUA scripts, creating a single plug-in for AutoCAD. The objective of this software package is to perform solar radiation analysis and obtain performance characteristics of the Building Integrated Photovoltaic (BIPV) system, taking into account shading and reflection from neighboring buildings, all within AutoCAD environment. In this project, we developed an urban building model in AutoCAD and performed the solar radiation analysis with the developed software tool. The performance characteristics were obtained and compared with the results from MATLAB model, previously presented [1]. The software package also incorporates provision to calculate energy from various commercially available solar modules.


Author(s):  
Benbouza Naima ◽  
Benfarhi Louiza ◽  
Azoui Boubekeur

Background: The improvement of the voltage in power lines and the respect of the low voltage distribution transformer substations constraints (Transformer utilization rate and Voltage drop) are possible by several means: reinforcement of conductor sections, installation of new MV / LV substations (Medium Voltage (MV), Low Voltage (LV)), etc. Methods: Connection of mini-photovoltaic systems (PV) to the network, or to consumers in underserved areas, is a well-adopted solution to solve the problem of voltage drop and lighten the substation transformer, and at the same time provide clean electrical energy. PV systems can therefore contribute to this solution since they produce energy at the deficit site. Results: This paper presents the improvement of transformer substation constraints, supplying an end of low voltage electrical line, by inserting photovoltaic systems at underserved subscribers. Conclusion: This study is applied to a typical load pattern, specified to the consumers region.


2014 ◽  
Vol 657 ◽  
pp. 121-125
Author(s):  
Daniel Măgurian ◽  
Gheorghe Oancea

This paper presents a design methodology of laminating tools for automotive interior parts using CATIA software package. The authors developed a software tool namedLTFrameDesignusingVBA for Applicationunder CATIA package, which automatically generates the main frame of the laminating tool according to the parts shapes, its dimensions and designer requirements. The software automates some stages of standard design and minimizes the design time and costs. The paper also presents the design stages which are followed by the user to obtain a 3D complete assembly of the laminating tool.


Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3152 ◽  
Author(s):  
Huadian Xu ◽  
Jianhui Su ◽  
Ning Liu ◽  
Yong Shi

Conventional photovoltaic (PV) systems interfaced by grid-connected inverters fail to support the grid and participate in frequency regulation. Furthermore, reduced system inertia as a result of the integration of conventional PV systems may lead to an increased frequency deviation of the grid for contingencies. In this paper, a grid-supporting PV system, which can provide inertia and participate in frequency regulation through virtual synchronous generator (VSG) technology and an energy storage unit, is proposed. The function of supporting the grid is implemented in a practical PV system through using the presented control scheme and topology. Compared with the conventional PV system, the grid-supporting PV system, behaving as an inertial voltage source like synchronous generators, has the capability of participating in frequency regulation and providing inertia. Moreover, the proposed PV system can mitigate autonomously the power imbalance between generation and consumption, filter the PV power, and operate without the phase-locked loop after initial synchronization. Performance analysis is conducted and the stability constraint is theoretically formulated. The novel PV system is validated on a modified CIGRE benchmark under different cases, being compared with the conventional PV system. The verifications demonstrate the grid support functions of the proposed PV system.


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