The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
M.t. Iqbal - One of the best experts on this subject based on the ideXlab platform.
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analysis of a small wind hydrogen stand alone Hybrid Energy System
Applied Energy, 2009Co-Authors: M.j. Khan, M.t. IqbalAbstract:In this article, detailed modeling, simulation, and analysis of an isolated wind-hydrogen Hybrid Energy System is presented. Dynamic nonlinear models of all the major subSystems are developed based on sets of empirical and physical relationships. The performance of the integrated Hybrid Energy System is then analyzed through digital simulation. Design of dynamic controllers and supervisory control schemes are also presented. Expected behaviors during sudden load variation, wind speed change and hydrogen pressure drop are observed under both stochastic and step-variation conditions. MATLAB-SimulinkTM is employed for dynamic System modeling. This exercise, in essence, outlines a process of wind-hydrogen off-grid System control synthesis and performance evaluation. Finally, results of the analysis are summarized, limitations of the simulation study are identified, and scope for future work is indicated.
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dynamic modeling and simulation of a small wind fuel cell Hybrid Energy System
Renewable Energy, 2005Co-Authors: M.j. Khan, M.t. IqbalAbstract:This paper describes dynamic modeling and simulation results of a small wind–fuel cell Hybrid Energy System. The System consists of a 400 W wind turbine, a proton exchange membrane fuel cell (PEMFC), ultracapacitors, an electrolyzer, and a power converter. The output fluctuation of the wind turbine due to wind speed variation is reduced using a fuel cell stack. The load is supplied from the wind turbine with a fuel cell working in parallel. Excess wind Energy when available is converted to hydrogen using an electrolyzer for later use in the fuel cell. Ultracapacitors and a power converter unit are proposed to minimize voltage fluctuations in the System and generate AC voltage. Dynamic modeling of various components of this small isolated System is presented. Dynamic aspects of temperature variation and double layer capacitance of the fuel cell are also included. PID type controllers are used to control the fuel cell System. SIMULINKTM is used for the simulation of this highly nonlinear Hybrid Energy System. System dynamics are studied to determine the voltage variation throughout the System. Transient responses of the System to step changes in the load current and wind speed in a number of possible situations are presented. Analysis of simulation results and limitations of the wind–fuel cell Hybrid Energy System are discussed. The voltage variation at the output was found to be within the acceptable range. The proposed System does not need conventional battery storage. It may be used for off-grid power generation in remote communities.
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simulation of a small wind fuel cell Hybrid Energy System
Renewable Energy, 2003Co-Authors: M.t. IqbalAbstract:This paper describes simulation results of a small 500 W wind fuel cell Hybrid Energy System. The System consists of a Southwest Wind Power Inc. AIR 403 wind turbine, a Proton Exchange Membrane Fuel Cell (PEMFC) and an electrolyzer. Dynamic modeling of various components of this small isolated System is presented. Simulink is used for the dynamic simulation of this nonlinear 48 V Hybrid Energy System. Transient responses of the System to a step change in the load current and wind speed in a number of possible situations are presented. Analysis of simulation results and limitations of a wind fuel cell Hybrid Energy System are discussed.
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modeling and control of a wind fuel cell Hybrid Energy System
Renewable Energy, 2003Co-Authors: M.t. IqbalAbstract:This paper describes a Hybrid Energy System consisting of a 5 kW wind turbine and a fuel cell System. Such a System is expected to be a more efficient, zero emission alternative to wind diesel System. Dynamic modeling of various components of this isolated System is presented. Selection of control strategies and design of controllers for the System is described. Simnon is used for the simulation of this highly nonlinear System. Transient responses of the System for a step change in the electrical load and wind speed are presented. System simulation results for a pre-recorded wind speed data indicates the transients expected in such a System. Design, modeling, control and limitations of a wind fuel cell Hybrid Energy System are discussed.
Saroj Rangnekar - One of the best experts on this subject based on the ideXlab platform.
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sizing and performance analysis of standalone wind photovoltaic based Hybrid Energy System using ant colony optimisation
Iet Renewable Power Generation, 2016Co-Authors: Payal Suhane, Saroj Rangnekar, Arvind Mittal, Anula KhareAbstract:This study presents a wind-solar photovoltaic based standalone Hybrid Energy System (HES) for an un-electrified village for central region of India - Madhya Pradesh. The inputs for the designing of HES are wind speed, solar radiation, temperature and the load demand which are variable with respect to time. In this study, hourly values of meteorological data and hourly load demand are considered over a year. For sizing and performance analysis of this standalone HES, ant colony optimisation technique has been used. The performance analysis of the System is done for the various parameters such as total cost of the System, power generated by various sources, state of charge of battery, contribution of various sources, continuity of supply to the load demand and unmet load. The obtained optimal configuration of the proposed HES is found to provide minimal Energy cost with excellent performance and reduced unmet load.
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minimization of green house gases emission by using Hybrid Energy System for telephony base station site application
Renewable & Sustainable Energy Reviews, 2010Co-Authors: Pragya Nema, R K Nema, Saroj RangnekarAbstract:Cellular mobile service is a rapidly expanding and a very competitive business worldwide, including developing countries. This paper proposes that the suitable alternative solution of grid power is the stand-alone PV/wind Hybrid Energy System with diesel generator as a backup for cellular mobile telephony base station site in isolated areas. It is expected that the newly developed and installed System would provide very good opportunities for mobile telephony base station in near future. In addition, protecting the environment and combating climate change are two of the most pressing challenges facing humankind. As Energy prices soar, network operators are increasingly scrutinizing their environmental and social responsibilities. This System will be more cost effective and environmental friendly over the conventional diesel generator. Approximately 70–80% fuel cost over conventional diesel generator and the emission of CO2 and other harmful gasses in environments were reduced.
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pre feasibility study of pv solar wind Hybrid Energy System for gsm type mobile telephony base station in central india
International Conference on Computer and Automation Engineering, 2010Co-Authors: Pragya Nema, Saroj Rangnekar, R K NemaAbstract:This paper proposes the most feasible configuration of a stand alone PV/Wind Hybrid Energy System with diesel generator as a backup for cellular mobile telephony base station site in isolated areas of Central India. It is expected that the newly developed and installed System will provide very good opportunities for mobile telephony base station in near future. The meteorological data of Solar Insolation, hourly wind speed, are taken for Bhopal, Central India and the pattern of load consumption of mobile base station are studied and suitably modeled for pre-feasibility study of the Hybrid Energy System. This System is more cost effective and environmental friendly over the conventional diesel generator. It should reduced approximate Seventy to Eighty percent fuel cost over conventional diesel generator and also reduced the emission of Carbon dioxide and other harmful gasses in environments.
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pv solar wind Hybrid Energy System for gsm cdma type mobile telephony base station
2010Co-Authors: Pragya Nema, R K Nema, Saroj RangnekarAbstract:This paper gives the design idea of optimized PV-Solar and Wind Hybrid Energy System for GSM/CDMA type mobile base station over conventional diesel generator for a particular site in central India (Bhopal) . For this Hybrid System ,the meteorological data of Solar Insolation, hourly wind speed, are taken for Bhopal-Central India (Longitude 77 ο .23’and Latitude 23 ο .21’ ) and the pattern of load consumption of mobile base station are studied and suitably modeled for optimization of the Hybrid Energy System using HOMER software. The simulation and optimization result gives the best optimized sizing of wind turbine and solar array with diesel generator for particular GSM/CDMA type mobile telephony base station. This System is more cost effective and environmental friendly over the conventional diesel generator. It should reduced approximate 70%-80% fuel cost over conventional diesel generator and also reduced the emission of CO2 and other harmful gasses in environments. It is expected that the newly developed and installed System will provide very good opportunities for telecom sector in near future. Copyright © 2010 International Energy and Environment Foundation - All rights reserved.
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A current and future state of art development of Hybrid Energy System using wind and PV-solar: A review
Renewable and Sustainable Energy Reviews, 2009Co-Authors: Pragya Nema, Rajesh Kumar Nema, Saroj RangnekarAbstract:The wind and solar Energy are omnipresent, freely available, and environmental friendly. The wind Energy Systems may not be technically viable at all sites because of low wind speeds and being more unpredictable than solar Energy. The combined utilization of these renewable Energy sources are therefore becoming increasingly attractive and are being widely used as alternative of oil-produced Energy. Economic aspects of these renewable Energy technologies are sufficiently promising to include them for rising power generation capability in developing countries. A renewable Hybrid Energy System consists of two or more Energy sources, a power conditioning equipment, a controller and an optional Energy storage System. These Hybrid Energy Systems are becoming popular in remote area power generation applications due to advancements in renewable Energy technologies and substantial rise in prices of petroleum products. Research and development efforts in solar, wind, and other renewable Energy technologies are required to continue for, improving their performance, establishing techniques for accurately predicting their output and reliably integrating them with other conventional generating sources. The aim of this paper is to review the current state of the design, operation and control requirement of the stand-alone PV solar-wind Hybrid Energy Systems with conventional backup source i.e. diesel or grid. This Paper also highlights the future developments, which have the potential to increase the economic attractiveness of such Systems and their acceptance by the user. Crown Copyright © 2008.
Bjorn Palm - One of the best experts on this subject based on the ideXlab platform.
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feasibility study for a standalone solar wind based Hybrid Energy System for application in ethiopia
Applied Energy, 2010Co-Authors: Getachew Bekele, Bjorn PalmAbstract:The aim of this paper is to investigate the possibility of supplying electricity from a solar-wind Hybrid System to a remotely located model community detached from the main electricity grid in Eth ...
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feasibility study for a standalone solar wind based Hybrid Energy System for application in ethiopia
Applied Energy, 2010Co-Authors: Getachew Bekele, Bjorn PalmAbstract:The aim of this paper is to investigate the possibility of supplying electricity from a solar-wind Hybrid System to a remotely located model community detached from the main electricity grid in Ethiopia. The wind Energy potential of four typical locations has been assessed in a previous article. The solar potential has also been investigated and the results are presented in detail in an accompanying article awaiting publication. For one of the sites, Addis Ababa, the results of the investigation are given here in detail. For the other sites, the results are given as sensitivity diagrams only. Based on the findings of the studies into Energy potential, a feasibility study has been carried out on how to supply electricity to a model community of 200 families, which comprises 1000 people in total. The community is equipped with a community school and a health post. The electric load consists of both primary and deferrable types and comprises lighting, water pumps, radio receivers, and some clinical equipment. A software tool, Hybrid Optimization Model for Electric Renewables (HOMER) is used for the analysis. The result of the analysis is a list of feasible power supply Systems, sorted according to their net present cost. Furthermore, sensitivity diagrams, showing the influence of wind speeds, PV costs, and diesel prices on the optimum solutions are also provided.
M P Sharma - One of the best experts on this subject based on the ideXlab platform.
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feasibility and sensitivity analysis of an off grid micro hydro photovoltaic biomass and biogas diesel battery Hybrid Energy System for a remote area in uttarakhand state india
Renewable & Sustainable Energy Reviews, 2016Co-Authors: Ankit Bhatt, M P Sharma, R P SainiAbstract:The aim of this paper is to study techno-economic feasibility of microhydro–photovoltaic–biomass and biogas–diesel–battery Hybrid Energy System (HES) in off-grid mode for a rural area in Uttarakhand state, India. The considered HES is designed for Energy access in 5 un-electrified villages. Size optimization and sensitivity analysis of considered System is performed by using HOMER software in order to meet the electricity requirements of study area. The selection of optimum configuration is based on the lowest value of cost of Energy (COE) and net present cost (NPC) along with the maximum value of renewable fraction (RF) and lowest harmful emissions (CO2). By considering economy and environment as the main concerns, comparative analysis of four different types of models is presented here. Based on sensitivity analysis, 3 configurations out of four different models are selected. By considering economy and environment as the main driving factors, one configuration out of three configurations, is selected as the optimum configuration for the study area which comprises total NPC $5,33,654, COE $0.197/kWh, RF 94% and CO2 emission 15,930kg/yr.
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selection of a suitable Energy management strategy for a Hybrid Energy System in a remote rural area of india
Energy, 2016Co-Authors: Subho Upadhyay, M P SharmaAbstract:Renewable Energy, a viable alternative of the world, can overcome the Energy crisis that hinders growth of today's economies. The present work includes sizing of Hybrid Energy System using various Energy management strategies. The Energy management strategies considered in the present work are cycle charging strategy, load following strategy and peak shaving strategy. The sizing of Hybrid Energy System for all the mentioned strategies are carried out using genetic algorithm, particle swarm optimization and biogeography based optimization techniques by keeping Energy index ratio at 1. The model also incorporates net present cost, cost of Energy, renewable fraction and emissions of carbon di-oxide from diesel generator. From the analysis, it can be concluded that the 10th combination of cycle charging strategy is most cost effective as compared to other dispatch strategies. Seven unelectrified villages of Dhauladevi block of Almora district in Uttarakhand, India, has been selected for the development of Hybrid Energy System, comprising of renewable Energy resources available locally along with the addition of diesel generator, for meeting the Energy deficit. The results show that cycle charging strategy is most cost effective compared to load following and peak shaving strategies, with a minimum cost of Energy value of 5.64 ₹/kWh.
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development of Hybrid Energy System with cycle charging strategy using particle swarm optimization for a remote area in india
Renewable Energy, 2015Co-Authors: Subho Upadhyay, M P SharmaAbstract:In recent years, renewable Energy can be seen as one of the important prospect of today's research, as it is likely to enlighten the lives of millions of people by fulfilling demand of electricity in their daily life. The present work focuses on the development of optimal Hybrid Energy System sizing model based on comparative analysis of particle swarm optimization, genetic algorithm and Homer software for Energy index ratio of 1. The model also incorporates renewable fraction, emissions of carbon di oxide from diesel generator, net present cost and cost of Energy. The System is developed to supply the demand of 7 un-electrified villages of Dhauladevi block of Almora district in Uttarakhand, India with the help of the available resources of solar, hydro, biomass and biogas Energy along with the addition of diesel generator, for meeting out the Energy deficit. From the optimization results, minimum cost of Energy and maximum renewable fraction are obtained as 5.77 Rs/kWh and 92.6% respectively.
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modelling of Hybrid Energy System part ii combined dispatch strategies and solution algorithm
Renewable Energy, 2011Co-Authors: Ajai Gupta, R P Saini, M P SharmaAbstract:Computer simulation is an increasingly popular tool for determining the most suitable Hybrid Energy System type, design and control for an isolated community or a cluster of villages. This paper presents the development of the optimum control algorithm based on combined dispatch strategies, to achieve the optimal cost of battery incorporated Hybrid Energy System for electricity generation, during a period of time by solving the mathematical model, which was developed in Part I of this tri-series paper.
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modelling of Hybrid Energy System part i problem formulation and model development
Renewable Energy, 2011Co-Authors: A Gupta, R P Saini, M P SharmaAbstract:A well designed Hybrid Energy System can be cost effective, has a high reliability and can improve the quality of life in remote rural areas. The economic constraints can be met, if these Systems are fundamentally well designed, use appropriate technology and make use effective dispatch control techniques. The first paper of this tri-series paper, presents the analysis and design of a mixed integer linear mathematical programming model (time series) to determine the optimal operation and cost optimization for a Hybrid Energy generation System consisting of a photovoltaic array, biomass (fuelwood), biogas, small/micro-hydro, a battery bank and a fossil fuel generator. The optimization is aimed at minimizing the cost function based on demand and potential constraints. Further, mathematical models of all other components of Hybrid Energy System are also developed. This is the generation mix of the remote rural of India; it may be applied to other rural areas also.
S Ashok - One of the best experts on this subject based on the ideXlab platform.
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optimal power management controller for a stand alone solar pv wind battery Hybrid Energy System
Energy Sources Part A-recovery Utilization and Environmental Effects, 2015Co-Authors: S Kumaravel, S AshokAbstract:In this article, a DC-linked stand-alone solar photovoltaic (PV)/wind/battery Hybrid Energy System is proposed. The wind and PV generation Systems are the main power generation sources, the battery System is used as backup generation, and the water heater acts as a dump load to utilize any excess power available with source. The simulation model of the Hybrid System has been developed in MATLAB/Simulink platform. Simulation studies have been carried out to verify the System performance under different scenarios using the practical load profile and real weather data collected at National Institute of Technology Calicut campus. The overall control and power management strategy for the proposed Hybrid Energy System is also developed. The simulation results, given for two scenarios, show the effectiveness of the overall power management strategy and the feasibility of the proposed Hybrid System.
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fuzzy controlled dual input dc dc converter for solar pv wind Hybrid Energy System
IEEE Students Conference on Electrical Electronics and Computer Science, 2012Co-Authors: P R Shiyas, S Kumaravel, S AshokAbstract:This paper proposes a multiple input power conditioner topology with Fuzzy controller to integrate intermittent nature of renewable sources such as solar, wind, etc. Solar PV and wind generator are utilized as the primary Energy source to meet the load demand and well-regulated output voltage is obtained from the multiple input power conditioner. The regulated Energy is transferred to the load through PWM inverter. Mathematical model of the multiple input power conditioner topologies has been developed. Based on the developed model dynamic simulation has been carried out and the results obtained from the simulation are presented in this paper. Performance evaluation of the proposed converter shows that the proposed fuzzy controller tune the parameters of dc/dc converter to obtain well regulated output voltage to the load from the intermittent nature of source.
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an optimal stand alone biomass solar pv pico hydel Hybrid Energy System for remote rural area electrification of isolated village in western ghats region of india
International Journal of Green Energy, 2012Co-Authors: S Kumaravel, S AshokAbstract:Biomass based Hybrid Energy System is utilized for the electrification of villages, especially in developing countries like India. Hybrid Energy System (HES) components, feasibility study, and cost analysis are presented in this paper for a remote area Kakkavayal, a forest region in Kerala, India. A water stream at 25 m height has been identified at Kakkavayal by the Forest Department of Kerala. The village has been marked to study hourly measured meteorological and load data for a period of time. The performance of the proposed Hybrid System is determined on hourly basis and optimum configuration, which can meet the Energy demand with minimum cost using the Hybrid System design tool HOMER. Parametric analysis indicates that with 2 kW solar PV, 15 kW pico-hydel, and 5 kW biomass gasifier generator together with five numbers of 12 V, 200 Ah of battery storage to meet the primary load demand of 56 kWh/d and 17 kWh/d (scaled annual average) of deferrable load. From the simulation, the cost of Energy is found...
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optimised model for community based Hybrid Energy System
Renewable Energy, 2007Co-Authors: S AshokAbstract:Abstract Hybrid Energy System is an excellent solution for electrification of remote rural areas where the grid extension is difficult and not economical. Such System incorporates a combination of one or several renewable Energy sources such as solar photovoltaic, wind Energy, micro-hydro and may be conventional generators for backup. This paper discusses different System components of Hybrid Energy System and develops a general model to find an optimal combination of Energy components for a typical rural community minimizing the life cycle cost. The developed model will help in sizing Hybrid Energy System hardware and in selecting the operating options. Micro-hydro-wind Systems are found to be the optimal combination for the electrification of the rural villages in Western Ghats (Kerala) India, based on the case study. The optimal operation shows a unit cost of Rs. 6.5/kW h with the selected Hybrid Energy System with 100% renewable Energy contribution eliminating the need for conventional diesel generator.
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optimised model for community based Hybrid Energy System
Renewable Energy, 2007Co-Authors: S AshokAbstract:Hybrid Energy System is an excellent solution for electrification of remote rural areas where the grid extension is difficult and not economical. Such System incorporates a combination of one or several renewable Energy sources such as solar photovoltaic, wind Energy, micro-hydro and may be conventional generators for backup. This paper discusses different System components of Hybrid Energy System and develops a general model to find an optimal combination of Energy components for a typical rural community minimizing the life cycle cost.
