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Present paper discusses about a reliable and cost effective optimal design for hybrid energy systems using meta-heuristic techniques. Design, planning and control of hybrid systems require complex optimization of the same which may not be solved easily with the conventional optimization methods. Several meta-heuristic optimization techniques such as particle swarm optimization techniques (PSO), differential...
The electrical energy consumption is expanding all over the globe and the gap between the demand of electrical power and generation is escalating day by day. In addition to conventional power generation, renewable energy systems are being integrated to meet the rising demand of electrical power. To provide reliable, cost effective power solutions and to reduce the greenhouse gas emissions effectively...
Role of off-grid renewable energy in extending basic healthcare services to rural villages where there is no grid extension or unreliable power supply cannot be over emphasized. This paper thus evaluated the technical and economic benefit of powering off-grid rural health clinic with renewable energy resources. The rural clinic selected as a case study in this paper is situated at Fatika rural village...
Diesel generators account for the majority of generation into remote and off-grid power systems. However, complementary generation alternatives are increasingly becoming both available and cost competitive, specifically via the introduction of renewable technologies. Achieving optimal integration requires the diesel generators to be able to operate sustainably at low load levels. A key roadblock to...
Hybrid renewable energy systems shows a great potential for electricity generation in Bangladesh. Hybrid renewable energy system can be set up such a way that the electricity will add to national grid connection and it will eventually reduce the pressure of electricity demand from national grid. Abundance of renewable energy sources in the form of solar energy provides opportunities of renewable energy...
Hybrid Technology has been successfully incorporated into passenger and commercial heavy vehicles. Seeing the success and evolution of hybrid technology, many Defense Organizations around the world are currently researching and developing hybrid prototypes of tracked combat vehicles to move into a new era of warfare equipment with less emissions, less fuel consumption, better performance, more power...
The share of renewable energy utilization is growing fast in recent years, resulting in an increase in intermittence in power supply systems. Additionally, the demand profile will change drastically in the short and long term through increasing electrification of transport and heating, respectively. It is an important task to address the impact caused by the generation and demand uncertainties. In...
This paper discusses new powertrain concepts for outdoor robotic systems, which have to work energy autarkic over several hours under workload. The main idea is to separate the powertrain components into different devices (combustion and electric engines) according to functional and workload criteria, as well as device power characteristics. For demonstrating and validating the concept an existing...
The addition of renewable energy to the existing power system introduces several complexities. With increased penetration of wind energy there are power balancing and frequency issues that come into existence. A hybrid energy storage application towards smoothing the power output from a wind generator and a frequency domain based sizing of the same is done in this paper. The sizing also considers...
This paper proposes a strategy base on a Population-Based Incremental Learning (PBIL) algorithm to reduce the fuel consumption in hybrid fuel cell/photovoltaic power systems. The strategy is focused on increasing the power produced by the photovoltaic (PV) generator to reduce the fuel needed to supply the load. Such an improvement is achieved by reducing the effect of shadows over the system, which...
The interconnections and mutual impacts between the real-time market update process and the physical response of the power system will bring about new stability issue. This paper presents a more realistic discrete-time pricing model including congestion management, then models the coupling dynamics of the power systems and markets as a nonlinear hybrid system. And based on the locally sampling theorem,...
In this paper, the main aim is developing a product which will take automatic decisions according to the algorithm for selecting the source from all available energy sources depends on varying load conditions at the output. The different available energy sources will be at a common junction and one output from the developed system will drive the load. Two methods hybrid power train and demand side...
In this paper we have described a hybrid automaton based approach towards the development of a simplified Medium Voltage Direct-Current (MVDC) Shipboard Power System (SPS) model. SPS is considered a good subject of hybrid modeling and hybrid control system design as it combines a variety of continuous component dynamics, discrete control actions as well as a variety of switching components. Therefore,...
In this paper, a detailed study and implementation of a reliable and efficient regenerative braking system is presented. It is applied on a prototype electric vehicle, that uses a hydrogen fuel cell as its only power source. Supercapacitors are used to store the energy that is generated during braking, transistors for switching the alternative circuits and an embedded computer controller program undertakes...
Electrical demand continues to increase in both developing and developed countries. In Lebanon, the cost of electricity is relatively high because the utility burns expensive heavy fuel oil and gasoil in low-efficiency power plants. In addition, customers are using expensive private diesel generators to compensate for power shortages caused by the unreliable grid hence further escalating the energy...
This paper deals with the very short time predictive control of a hybrid microgrid (μG). The hybrid μG is characterized by the presence of two sections operating in alternating current (AC) and in direct current (DC), respectively. The proposed very short time predictive control is based on an optimal strategy focused on the coordination of loads and energy resources and aimed at minimizing the cost...
Photovoltaic (PV) and wind energies are renewable and clean, which can be alternative to fossil fuels. The PV/wind hybrid system optimal design problem is the hot topic nowadays. The aim of the optimal design is to develop an independent energy supply system with minimum total annual cost and loss power supply probability by determining the number of PV panels, wind turbines and backup batteries....
Tagalaya village, Northern Halmahera has implemented a hybrid power plant Photovoltaic (PV) -Diesel generator. This paper presents the hybrid system's condition in Tagalaya village, Tagalaya Island, includes the potential and constraint factors. The result of the evaluation process of potential hybrid system in Tagalaya village is PV standalone only capable to ward off the 10% load of the installed...
The aim of this paper is to present an approach to economically improve the overall performance, dependability, reliability and availability of electricity generation power plants in south of Algeria by integrating renewable energy. A prefeasibility study of a hybrid 9×1.9MW Diesel power generation plant in Tindouf (Algeria) from conventional and renewable energy sources will help to improve the performances...
A 28-GHz dual-vector phase rotator is introduced, having the capability of generating two quadrature output signals that track one another in phase. The 4-bit dual-vector rotator was implemented in IBM 0.12-µm SiGe BiCMOS technology and achieves full 360o phase shifting, RMS phase and amplitude errors of < 5 degrees and < 0.8 dB, respectively for both output vectors, and 10-12 dB of gain. Output...
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