scholarly journals STUDY OF OPERATING MODES OF A STAND-ALONE PHOTOVOLTAIC SYSTEM FOR OUTDOOR LIGHTING

2013 ◽  
Vol 4 (2) ◽  
Author(s):  
Stoyo Platikanov ◽  
Milko Yovchev
Keyword(s):  
Light Emitting Diode ◽  
Electrical Energy ◽  
Operating Mode ◽  
Photovoltaic System ◽  
Pv System ◽  
Remote Visualization ◽  
Light Emitting ◽  
Operating Modes ◽  
Pv Module ◽  
Led Luminaire

Photovoltaic power supply of street lighting has been developing rapidly in recent years. A stand-alone photovoltaic (PV) system supplying light-emitting diode (LED) outdoor luminaires has been constructed in the Technical University of Gabrovo. A PV-LED system consists of a PV module, a storage battery, a solar controller, a LED lamp and a system for remote visualization of operating modes. Working processes for optimization of the night operating mode of LED luminaire have been studied. Data on electrical energy stored by the battery and consumed for lighting have been presented.

Performance assessment of free standing and building integrated grid connected photovoltaic system for southern part of India

2020 ◽  
pp. 014362442097774
Author(s):  
VS Chandrika ◽  
M Mohamed Thalib ◽  
Alagar Karthick ◽  
Ravishankar Sathyamurthy ◽  
A Muthu Manokar ◽  
...  
Keyword(s):  
Geographical Location ◽  
Photovoltaic System ◽  
Building Structures ◽  
System Efficiency ◽  
Pv System ◽  
Free Standing ◽  
Pv Module ◽  
Building Integrated Photovoltaic ◽  
Community Buildings ◽  
Equatorial Climate

Photovoltaic (PV) system efficiency depends on the geographical location and the orientation of the building. Until installing the building structures, the integration of the PV module must be evaluated with ventilation and without ventilation effects. This work optimises the performance of the 250 kWp grid-connected photovoltaic (GPV) for community buildings in the southern part of India. This simulation is carried out to evaluate the system efficiency of the GPV system under various ventilation conditions, such as free-standing PV (FSPV), building integrated photovoltaic ventilated (BIPV_V) and Building Integrated Photovoltaic without ventilation (BIPV). The PVsyst simulation tool is used to simulate and optimise the performance of the system with FSPV, BIPV and BIPV_V for the region of Chennai (13.2789° N, 80.2623° E), Tamilnadu, India. An annual system energy production is 446 MWh, 409 MWh and 428 MWh of FSPV, BIPV and BIPV_V system respectively. while electrical efficiency for the FSPV, BIPV_V, BIPV system is 15.45%. 15.25% and 14.75% respectively. Practical application: Integrating the grid connected photovoltaic system on the building reduces the energy consumption in the building. The integration of the PV on the roof or semi integrated on the roof is need to be investigated before installing on the buildings. The need for installation of the BIPV with ventilation is explored. This study will assist architects and wider community to design buildings roofs with GPV system which are more aesthetic and account for noise protection and thermal insulation in the region of equatorial climate zones.

scholarly journals Design of a Building-Integrated Photovoltaic System with a Novel Bi-Reflector PV System (BRPVS) and Optimal Control Mechanism: An Experimental Study

Electronics ◽  
2018 ◽  
Vol 7 (7) ◽  
pp. 119 ◽  
Author(s):  
Muhammad Khan ◽  
Kamran Zeb ◽  
Waqar Uddin ◽  
P. Sathishkumar ◽  
Muhammad Ali ◽  
...  
Keyword(s):  
Low Cost ◽  
Input Voltage ◽  
Photovoltaic System ◽  
Solar Pv ◽  
Pv System ◽  
Building Integrated Photovoltaics ◽  
Pv Module ◽  
Solar Pv System ◽  
Zero Carbon ◽  
The Cost

Environment protection and energy saving are the most attractive trends in zero-carbon buildings. The most promising and environmentally friendly technique is building integrated photovoltaics (BIPV), which can also replace conventional buildings based on non-renewable energy. Despite the recent advances in technology, the cost of BIPV systems is still very high. Hence, reducing the cost is a major challenge. This paper examines and validates the effectiveness of low-cost aluminum (Al) foil as a reflector. The design and the performance of planer-reflector for BIPV systems are analyzed in detail. A Bi-reflector solar PV system (BRPVS) with thin film Al-foil reflector and an LLC converter for a BIPV system is proposed and experimented with a 400-W prototype. A cadmium–sulfide (CdS) photo-resistor sensor and an Arduino-based algorithm was developed to control the working of the reflectors. Furthermore, the effect of Al-foil reflectors on the temperature of PV module has been examined. The developed LLC converter confirmed stable output voltage despite large variation in input voltage proving its effectiveness for the proposed BRPVS. The experimental results of the proposed BRPVS with an Al-reflector of the same size as that of the solar PV module offered an enhancement of 28.47% in the output power.

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.

scholarly journals ANALYSIS AND SIMULATION OFF-GRID PV PANELS BY USING MATLAB / SIMULINK ENVIRONMENT

2021 ◽  
pp. 97-105
Author(s):  
L. M. Abdali ◽  
H. A. Issa ◽  
Q. A. Ali ◽  
V. V. Kuvshinov ◽  
E. A. Bekirov
Keyword(s):  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Test System ◽  
Photovoltaic System ◽  
Photovoltaic Module ◽  
Operating Modes ◽  
Pv Module ◽  
Pv Modules ◽  
Generating System

The use of renewable energy sources and in particular solar energy has received considerable attention in recent decades. Photovoltaic (PV) energy projects are being implemented in very large numbers in many countries. Many research projects are carried out to analyze and verify the performance of PV modules. Implementing a pilot plant for a photovoltaic power system with a DC / DC converter to test system performance is not always possible due to practical limitations. The software simulation model helps to analyze the performance of PV modules, and more useful would be a general circuit model that can be used to test any commercial PV module. This paper presents a simulation of a mathematical model of a photovoltaic module that boosts a DC / AC converter and also simulates the operating modes of a solar generating system at various load characteristics. The model presented in this article can be used as a generalized PV module to analyze the performance of any commercially available PV module. In the presented work, the parameters that affect the performance of the generating system were investigated. The results were obtained for the operation of DC/AC photoelectric converters. The presented characteristics strongly depend on such parameters as solar insolation, the temperature of the working surface of the photovoltaic module, the charge-discharge time of storage batteries, etc. When one of the values ​​of these parameters changes, the operating modes of the solar power generating battery change. Changing the operating modes can lead to malfunctions of the entire operation of the system, therefore, it is necessary to control all the energy characteristics of the installation. The actions proposed in this work aimed at studying the operation of the photovoltaic system and the energy storage system, as well as the use of the necessary auxiliary devices for monitoring and controlling the parameters of the installation, are capable of achieving an increase in the efficiency of the generation of the system. The studies carried out in the course of the presented work make it possible to increase the level of knowledge on the control and management of the parameters of photovoltaic generating plants and expand the possibilities of their uninterrupted operation and increase energy production.

scholarly journals Modeling the Operating Modes of a Photovoltaic System

2021 ◽  
Vol 24 (3) ◽  
pp. 78-87
Author(s):  
L.M. Abdali ◽  
H.J. Mohammed ◽  
B.A. Yakimovich ◽  
V.V. Kuvshinov ◽  
N.V. Korovkin ◽  
...  
Keyword(s):  
Solar Power ◽  
Circuit Simulation ◽  
Electrical Energy ◽  
Power Converter ◽  
Photovoltaic System ◽  
Solar Array ◽  
Efficient Operation ◽  
Operating Modes ◽  
Different Types ◽  
Generating System

During the operation of photovoltaic installations, the inconstancy of the energy characteristics of the flow of incident solar radiation adversely affects the generation of electrical energy. Consumers are highly dependent on climatic factors and solar insolation. For more efficient operation of generating solar installations, it is necessary to conduct detailed studies of the characteristics of the auxiliary and control equipment of the photovoltaic system. When using mathematical programs to simulate the operating modes of solar power generating systems, it is possible to significantly improve the operating parameters of control units and auxiliary systems and increase the generation of electrical energy. The paper presents an improved electrical diagram of a photovoltaic generating system, its control elements, and the efficiency of energy generation is increased. It also describes a method for modeling the operating modes of photovoltaic (PV) modules, implemented in the Matlab/Simulink program. In the work, it was necessary to define a circuit simulation model for the solar array to ensure interaction with the power converter. The characteristics of the solar cells, which are influenced by irradiation and temperature, are modeled by a circuit model. A simplified equivalent circuit for a diode equivalent PV system is used as a model. The simulation results are compared with different types of PV module data. As a result of the work, it was shown that the created simulation blocks in the Matlab/Simulin system well simulate the operation of solar panels, while they are compatible with different types of photovoltaic modules and are convenient in providing various operating modes. In the study of real operating modes of the proposed generating system, the possibility of increasing the generation of electrical energy was shown. When using the proposed circuit solutions for the operation of solar installations, it is possible to significantly increase their efficiency, extend the trouble-free operation, and increase the service life of the equipment. The conducted research contributes to a better use of blocks of photovoltaic systems used to provide electrical energy to industrial, municipal and individual consumers. The circuit solutions proposed in the work are possible for use both at large solar power plants operating in parallel with the general energy system, and at small photovoltaic installations used to provide individual consumers.

scholarly journals The Electrical Energy Modeling of the Modular Off-Grid PV System for Aquaculture Application in the EEC Region

2021 ◽  
Vol 302 ◽  
pp. 01006
Author(s):  
Sukkhi Buakaew ◽  
Prayut Jiamrittiwong ◽  
Nutdechatorn Puangngernmak
Keyword(s):  
Electrical Energy ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Pv System ◽  
Modular Systems ◽  
Traditional System ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
Gravid Females ◽  
Solar Photovoltaic System

Renewable energy as a solar photovoltaic system represents an essential role in improving and promoting energy sustainability in agricultural/aquaculture-related activities. The “Crab Bank” is the program on practicing the caught gravid females of Blue Swimming Crab (BSC) in supporting conditions, allowing them to spawn and then release the zoea and young crabs back to the sea where are in the Eastern Economic Corridor (EEC). Onward with the project, many scientific studies assess the BSC stocks condition, evaluate the fishing habitat, and other relevant issues as the energy used in a micro-indoor system as Recirculating Aquaculture Systems (RAS). The off-grid solar photovoltaic system is used in the system cause the installed location was near the seaside area. The system’s large size was operating, including solar panels, inverter, charger, and batteries to maintain the AC motor pump, affecting much energy loss in the system. The off-grid solar system design for modular systems is represented in this paper to describe the new structure of the micro modular RAS that reduces cost and increases the solar system’s efficiency in modular concepts comparing the traditional system. The new structure model represents the calculation result in the term of electrical energy and experiment to scale for replacement in the aquaculture area in Rayong or Jantaburi in the EEC region. This research is a cooperation between KMUTNB Rayong and the Provincial Energy Office Of Rayong.

scholarly journals Smart Street Lighting Detecting Vehicle and Pedestrian Movement Aiming for Sustainable Bhutan

2020 ◽  
Vol 9 (3) ◽  
pp. 4276-4281
Keyword(s):  
Light Emitting Diode ◽  
Electrical Energy ◽  
Fluorescent Lamp ◽  
Infrared Source ◽  
Light Emitting ◽  
Underdeveloped Countries ◽  
Global Issue ◽  
High Initial Cost ◽  
Compact Fluorescent Lamp ◽  
And Control

An energy crisis is global issue nowadays. Bhutan however, does not realize it being blessed with good geographical and demographical diversity. It is high time that Bhutan realize the need of energy conservation technique. The electrical energy is wasted unnecessarily which starts from keeping the mobile charger plugged in the socket when not in use to lamps keeping ON in streets throughout day and night. People don’t seem to care but monitoring it for better conservation benefit has become crucial in underdeveloped countries like Bhutan whose source of energy is limited to hydropower only. Wind and solar generations are feasible but the energy cost per unit would be very high due to high initial cost. A case study conducted within the college campus revealed tremendous savings a college can make just by replacing conventional compact fluorescent lamp (CFL) with light emitting diode (LED). Therefore, the best option for Bhutan and Bhutanese people is to take better care of the existing energy sources and use it judiciously. This paper proposes a method to monitor and control the street/compound lighting in a smarter way. The two types of sensors are employed. The light dependent resistor (LDR) is used to monitor the intensity or brightness of surrounding and passive infrared (PIR) sensor is employed for detecting infrared source. The sensor output is processed and monitored by the PIC16F877A microcontroller. Moreover, the incandescent lamp and the compact fluorescent lamp will be replaced by LED lamps. The project aims to reduce power consumption in Bhutan through proposer control of street/compound lighting so as to have better economy of the country by exporting more unit of energy to neighboring country.

scholarly journals Development of Photovoltaic Inverter for AC Load

2017 ◽  
Vol 3 (4) ◽  
pp. 28
Author(s):  
Nur Fairuz Mohamed Yusof ◽  
Mazwin Mazlan
Keyword(s):  
Light Emitting Diode ◽  
Harmonic Distortion ◽  
Photovoltaic System ◽  
Oxide Semiconductor ◽  
Solar Pv ◽  
Pv System ◽  
Software Simulation ◽  
Pv Panel ◽  
Ideal System ◽  
Power Switches

This project presents the development of Photovoltaic (PV) push-pull inverter for alternating current (AC) application. There are two main systems in this project which is the PV system and the inverter system. The photovoltaic system consists of the PV panel which is used to seep sunshine to recharge the battery and the solar charger controller circuit that prevent battery from surpluses voltage is connected between solar PV and battery. While the push-pull inverter play a pivotal role in switching from direct current (DC) voltage to AC voltage for the inverter system. Then the AC voltage rose to 230 V by using transformer. The push-pull inverter switching is controlled by a multi-vibrator driver circuit. This project used two light emitting diode (LED) light bulb as an AC load and Metal Oxide Semiconductor Field Effect Transistor (MOSFETs) as the power switches. This project had been analysed through software and hardware prototype for comparison purposed. The efficiency of ideal system that obtains from software simulation is 94.9% while for the hardware prototype is nearly to 95%. While the total harmonic distortion (THD) for both voltage and current is 48.32% from software simulation and 47.9% from hardware prototype analysis. The results have been found in good agreement with the analysis presented in this paper.

scholarly journals The Different Type of MPPT Techniques for Photovoltaic System

2021 ◽  
pp. 1-4
Author(s):  
Apar Chitransh ◽  
◽  
Mr. Sachin Kumar ◽  
Keyword(s):  
Solar Energy ◽  
Electrical Energy ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Main Role ◽  
Maximum Power Point ◽  
Pv Module ◽  
Full Form ◽  
Power Point

We know that sun is the only sources which is available free of cost in our environment for the PV module. when the sun strikes in to the PV cell it converts to the electrical energy. Now a days to fulfill the requirement of energy the solar energy plays a main role of that. But some time this solar energy is not sufficient to fulfill this requirement than some time we use the MPPT techniques which is increase the power generation and main advantage of this techniques is that this is work in any climate. The full form of MPPT is MAXIMUM POWER POINT TRACKER. It gets the maximum power from the available PV unit and it is not depending upon the any environmental conditions. In this paper we discuss in detail the several abilities that how they get the maximum power point and system convergence, efficiency and cost of implementation. In this paper we show that all type pf MPPT techniques.

Manufacture and Experimental Investigation of a Multi-Layer Generator Based on Dielectric Elastomer

2014 ◽  
Vol 960-961 ◽  
pp. 1336-1341
Author(s):  
Xue Jing Liu ◽  
Gong Zhang ◽  
Yong Quan Wang ◽  
Shu Hai Jia
Keyword(s):  
Energy Harvesting ◽  
Light Emitting Diode ◽  
Electrical Energy ◽  
Dielectric Elastomer ◽  
Maximum Energy ◽  
Open Circuit ◽  
Light Emitting ◽  
Energy Harvesting Efficiency ◽  
Open Circuit Condition ◽  
Constant Charge

As a member of Electroactive Polymers (EAPs), dielectric elastomer (DE) has shown considerable potential for energy harvesting applications. After the basic principle of DE energy harvesting is studied, a multi-layer DE generator using VHB 4910 (3M, USA) is specially designed and fabricated. Then, an improved energy harvesting circuit is designed to make use of harvested electrical energy. Finally, energy harvesting experiments are implemented under the constant charge (open-circuit) condition and the results prove that the multi-layer DE generator fabricated can produce enough energy to constantly drive a light emitting diode. The harvested electrical energy has good consistent with generated electrical energy and the maximum energy harvesting efficiency ηh can reach 89%.

Sign in / Sign up

Export Citation Format

Share Document