scholarly journals An optimisation of the hybrid renewable energy systems

2019 ◽  
Vol 113 ◽  
pp. 03022 ◽  
Author(s):  
Marek Jaszczur ◽  
Qusay Hassan ◽  
Patryk Palej
Keyword(s):  
Renewable Energy ◽  
Environmental Parameters ◽  
Energy System ◽  
Electrical Load ◽  
Renewable Energy Systems ◽  
Photovoltaic Modules ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy ◽  
The Relationship

In this work, we focus on utilization of hybrid renewable energy system for a residential load based in two different optimisation criteria. The presented system utilises photovoltaic modules wind turbines and batteries as energy storage. The analyses were carried out based on experimental measurements, for the electrical load, local solar radiation, wind speed and other environmental parameters. The optimisation process has been performed based on two aspects economic and ecological. The novelty of this work to find the relationship between two optimisation objectives.

scholarly journals Fuzzy Logic Based Controller with Dedicated Safety Function for Hybrid Renewable Energy System

2018 ◽  
pp. 1-13
Author(s):  
Nnadozie Emmanuel Chibuikem ◽  
Oparaku Ogbonna Ukachukwu
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Energy Flow ◽  
Fossil Fuels ◽  
Energy Systems ◽  
Energy System ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

For the dual reasons of energy security and environmental and climate preservation, there has been a global campaign for drastic reduction in the use of fossil fuels and a consequential aggressive pursuit for the development of clean energy systems. Hybrid renewable energy systems, ahead of single source renewable energy systems, promise to be an effective alternative to the use of fossil fuels. However, if hybrid renewable energy systems must effectively and reliably serve as an alternative to fossil fuel use, then improvements in the control and management of energy flow among the renewable energy supplies, energy storage components, and the load is of very vital significance. More intelligent and optimized, and easy-to-develop control techniques need to be introduced to replace already existing conventional techniques. And very importantly, extra measures have to be taken to ensure longer battery life and the overall safety of the system. This work is a design of a fuzzy logic-based control system for managing energy flow in a hybrid renewable energy system. A dedicated output was incorporated in the fuzzy controller for controlling the load connection status. The results showed that the fuzzy logic controller accurately emulated expert decisions in monitoring the battery state-of-charge and renewable energy supply capacities, and effectively determining and controlling the battery charging and discharging functions. The employment of fuzzy logic control in the system eliminated the need for complex and tedious mathematical modelling as required in conventional control methods. Thus the system was easier to develop.

scholarly journals Multi-Objective Decision-Making for Hybrid Renewable Energy Systems for Cities: A Case Study of Xiongan New District in China

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6223
Author(s):  
Bin Ye ◽  
Minhua Zhou ◽  
Dan Yan ◽  
Yin Li
Keyword(s):  
Decision Making ◽  
Renewable Energy ◽  
Energy Systems ◽  
Energy System ◽  
Energy Utilization ◽  
Target Area ◽  
Renewable Energy Systems ◽  
Multi Objective ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy

The application of renewable energy has become increasingly widespread worldwide because of its advantages of resource abundance and environmental friendliness. However, the deployment of hybrid renewable energy systems (HRESs) varies greatly from city to city due to large differences in economic endurance, social acceptance and renewable energy endowment. Urban policymakers thus face great challenges in promoting local clean renewable energy utilization. To address these issues, this paper proposes a combined multi-objective optimization method, and the specific process of this method is described as follows. The Hybrid Optimization Model for electric energy was first used to examine five different scenarios of renewable energy systems. Then, the Technique for Order Preference by Similarity to an Ideal Solution was applied using eleven comprehensive indicators to determine the best option for the target area using three different weights. To verify the feasibility of this method, Xiongan New District (XND) was selected as an example to illustrate the process of selecting the optimal HRES. The empirical results of simulation tools and multi-objective decision-making show that the Photovoltaic-Diesel-Battery off-grid energy system (option III) and PV-Diesel-Hydrogen-Battery off-grid energy system (option V) are two highly feasible schemes for an HRES in XND. The cost of energy for these two options is 0.203 and 0.209 $/kWh, respectively, and the carbon dioxide emissions are 14,473 t/yr and 345 t/yr, respectively. Our results provide a reference for policymakers in deploying an HRES in the XND area.

Integrating water desalination plants in renewable energy systems for isolated areas

2020 ◽  
Author(s):  
Argyris Ntrizai ◽  
Panayiotis Dimitriadis ◽  
Theano Iliopoulou ◽  
Nikos Mamassis ◽  
Demetris Koutsoyiannis
Keyword(s):  
Renewable Energy ◽  
Energy System ◽  
Water Desalination ◽  
Stochastic Methods ◽  
Water Network ◽  
Renewable Energy Systems ◽  
Desalination Plant ◽  
Hybrid Renewable Energy System ◽  
Desalination Plants ◽  
Hybrid Renewable Energy

<p>Isolated areas may face difficulties regarding both energy security and water supply as they are often not connected to the energy and water network of the mainland. In this respect, we investigate the integration of a desalination plant in the planning of a hybrid renewable energy system for an isolated area, in order to satisfy energy and freshwater needs. We examine the major desalination technologies (thermal, membrane) and we compare their advantages, limitations and potential for water production, in a small Aegean island. Using stochastic approaches for the energy and water demand and production, the reliability and feasibility of such a renewable energy-based desalination plant are investigated.</p><p>Acknowledgement: This research is conducted within the frame of the undergraduate course "Stochastic Methods" of the National Technical University of Athens (NTUA). The School of Civil Engineering of NTUA provided moral support for the participation of the students in the Assembly.</p>

scholarly journals Control of the Hybrid Renewable Energy System with Wind Turbine, Photovoltaic Panels and Battery Energy Storage

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1595
Author(s):  
Piotr Gajewski ◽  
Krzysztof Pieńkowski
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Synchronous Generator ◽  
Energy System ◽  
Permanent Magnet Synchronous Generator ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Hybrid Renewable Energy

The aim of the paper is the study of the Hybrid Renewable Energy System, which is consisted of two types of renewable energy systems (wind and sun) and is combined with storage energy system (battery). The paper presents the classification and review of architectures of Hybrid Renewable Energy Systems. The considered Hybrid Renewable Energy System was designed as a multi-converter system with gearless Wind Turbine driven Permanent Magnet Synchronous Generator and with a Photovoltaic Array and Battery Energy System. The mathematical models of individual elements of a complex Hybrid Renewable Energy System were described. In the control of both systems of Wind Turbine with Permanent Magnet Synchronous Generator and Photovoltaic array, the algorithms of Maximum Power Point Tracking have been implemented for higher efficiency of energy conversion. The energy storage in the battery has been managed by the control system of a bidirectional DC/DC converter. For the control of the Machine Side Converter and Wind Turbine with Permanent Magnet Synchronous Generator, the vector control method has been implemented. In the control system of the Grid Side Converter, the advanced method of Direct Power Control has been applied. The energy management strategies for optimal flows of electrical energy between individual systems of considered hybrid renewable energy system are developed and described. In order to determine the operation of proposed control systems, the simulation studies have been performed for different conditions of operation of individual elements of the complex hybrid system. The considered control methods and energy management strategies were tested thorough simulation studies for different wind speed variations, different sun irradiations, and different local load demands. The performed simulations are of practical importance in terms of proper operation requirements, design selection of components and energy management of Hybrid Renewable Energy Systems.

scholarly journals Stationary Hybrid Renewable Energy Systems for Railway Electrification: A Review

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5946
Author(s):  
Sergey V. Mitrofanov ◽  
Natalya G. Kiryanova ◽  
Anna M. Gorlova
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Systems ◽  
Energy System ◽  
Hydrogen Energy ◽  
Railway Transport ◽  
Renewable Energy Systems ◽  
Storage Devices ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

This article provides an overview of modern technologies and implemented projects in the field of renewable energy systems for the electrification of railway transport. In the first part, the relevance of the use of renewable energy on the railways is discussed. Various types of power-generating systems in railway stations and platforms along the track, as well as in separate areas, are considered. The focus is on wind and solar energy conversion systems. The second part is devoted to the analysis of various types of energy storage devices used in projects for the electrification of railway transport since the energy storage system is one of the key elements in a hybrid renewable energy system. Systems with kinetic storage, electrochemical storage batteries, supercapacitors, hydrogen energy storage are considered. Particular attention is paid to technologies for accumulating and converting hydrogen into electrical energy, as well as hybrid systems that combine several types of storage devices with different ranges of charge/discharge rates. A comparative analysis of various hybrid electric power plant configurations, depending on the functions they perform in the electrification systems of railway transport, has been carried out.

An investigation on wind/PV/fuel cell/battery hybrid renewable energy system for nursing home in Istanbul

2019 ◽  
Vol 233 (5) ◽  
pp. 616-625 ◽  
Author(s):  
Bahtiyar Dursun ◽  
Ercan Aykut
Keyword(s):  
Renewable Energy ◽  
Nursing Home ◽  
Fuel Cell ◽  
Energy Systems ◽  
Power Converter ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Cost Of Energy ◽  
Hybrid Renewable Energy

This paper presents a techno-economic analysis of hybrid renewable energy systems to supply the electrical load requirements of the nursing home located in Istanbul, Turkey. The standalone hybrid renewable energy systems (Photovoltaic (PV)/wind/fuel cell/electrolyzer, PV/fuel cell/electrolyzer, and wind/fuel cell/electrolyzer, etc.) considered in the analysis were comprised of different combinations of PV panels, fuel cells, and wind turbines supplemented with hydrogen storage. In this study, the Hybrid Optimization of Multiple Energy Resources (HOMER) software is used as the assessment tool to determine the optimal configuration of hybrid renewable energy systems taking total net present cost and cost of energy into consideration. As a result, it is determined that the optimal system configuration of standalone wind/PV/fuel cell/electrolyzer hybrid renewable energy systems with the lowest total net present cost consists of 30 kW PV panel, 20 kW wind turbine, 20 kW fuel cell, 20 kW power converter, 50 kW electrolyzer, 20 kW rectifier, and 100 kg hydrogen tank. Besides, the net present cost and cost of energy of the optimum configuration are calculated to be $607,298 and $1.306/kWh, respectively. The system is considered as completely renewable. When wind speed and solar radiation values increase, then the cost of energy decrease about $0.979/kWh.

scholarly journals Optimisation of hybrid renewable energy systems on islands: A review

2021 ◽  
Author(s):  
James Morales Lassalle ◽  
Dante Figueroa Martínez ◽  
Luis Vergara Fernández
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Meteorological Data ◽  
Energy Systems ◽  
Energy System ◽  
Fundamental Aspect ◽  
Power Relationship ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy

Access to energy services is recognised as a fundamental aspect of economic and social development. This is particularly important for isolated areas, where electrical supply is not guaranteed. Because of their inherent geographic characteristics, islands are prominent cases of isolated areas that must import and burn fossil fuels, with environmental and economic consequences. In this context, Hybrid Renewable Energy Systems (HRES) emerge as an alternative to traditional generation to reduce energy costs and environmental issues. This study aims to demonstrate the feasibility of implementing HRES on islands, based on energy optimisation. We present an extensive review of HRES optimisations across 73 island cases, collecting information about energy demand, energy system sizes, and optimisation methodologies. The most commonly proposed HRES components are identified, and a significant power relationship is found between population and annual energy demand on islands. Further, we identify islands with higher-than-expected and lower-than-expected consumption and the underlying causes. The main limitations of the reviewed studies are discussed, particularly with regards to availability and quality of hourly demand data and/or meteorological data required for renewable energy assessments. Several approaches to fill these gaps in information are reviewed here, concluding with a discussion of emergent methods and technologies.

scholarly journals Techno-Economic Analysis of a Stand-Alone Hybrid System: Application in Donoussa Island, Greece

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1868
Author(s):  
Michail Katsivelakis ◽  
Dimitrios Bargiotas ◽  
Aspassia Daskalopulu ◽  
Ioannis P. Panapakidis ◽  
Lefteri Tsoukalas
Keyword(s):  
Renewable Energy ◽  
Economic Analysis ◽  
Hybrid System ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Cost Of Energy ◽  
System Configurations ◽  
Hybrid Renewable Energy

Hybrid Renewable Energy Systems (HRES) are an attractive solution for the supply of electricity in remote areas like islands and communities where grid extension is difficult. Hybrid systems combine renewable energy sources with conventional units and battery storage in order to provide energy in an off-grid or on-grid system. The purpose of this study is to examine the techno-economical feasibility and viability of a hybrid system in Donoussa island, Greece, in different scenarios. A techno-economic analysis was conducted for a hybrid renewable energy system in three scenarios with different percentages of adoption rate (20%, 50% and 100%)and with different system configurations. Using HOMER Pro software the optimal system configuration between the feasible configurations of each scenario was selected, based on lowest Net Present Cost (NPC), minimum Excess Electricity percentage, and Levelized Cost of Energy (LCoE). The results obtained by the simulation could offer some operational references for a practical hybrid system in Donoussa island. The simulation results confirm the application of a hybrid system with 0% of Excess Electricity, reasonable NPC and LCoE and a decent amount of renewable integration.

scholarly journals Adaptation of a Novel Fuzzy Logic Controller to a Hybrid Renewable Energy System

2018 ◽  
pp. 1-10 ◽  
Author(s):  
Emmanuel Chibuikem Nnadozie ◽  
Ogbonna Ukachukwu Oparaku
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Power Management ◽  
Fuzzy Logic Controller ◽  
Energy Systems ◽  
Energy System ◽  
Test Case ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

Global attention has been drawn to exploiting the potentials of renewable energy systems, especially their hybrid configurations, due to sustainability issues and climatic impact associated with the use of fossil fuels. Power management in such hybrid renewable energy systems is still a progressive research. Many power control solutions have been proposed. However, much of them lack validation. This work was done to validate a proposed novel intelligent power management scheme based on fuzzy logic control. The controller, designed by a group of researchers, was validated by adapting it to a hybrid renewable energy system, and simulating test case scenarios to validate the functionality claims of the controller. For each test case, the controller was confirmed to emulate expert decisions. The novel fuzzy logic controller was thus validated and the claims of the authors verified.

Sign in / Sign up

Export Citation Format

Share Document