561

Three-phase four-wire Buck-Boost Modular Converter with Active

Power Filter Functionality

F. Barrero-González, M.I. Milanés-Montero, Eva González-Romera, C. Roncero-Clemente, J. Gutiérrez-Escalona, E. Romero-Cadaval

Department of Electrical, Electronic and Automatic Engineering

Escuela de Ingenierías Industriales, Universidad de Extremadura. Badajoz. Spain

Abstract

This study enhances the buck-boost modularconverter topology, also known as the Y-voltage source inverter, by implementing a control strategy that simultaneously manages active power injection into the grid while functioning as a shunt active power filter...READ MORE

562

Increasing the efficiency of pumped storage power plants

Oleksandr Novykh(1), Juan Albino Méndez Pérez (1), Benjamín González-Díaz(1), Igor Sviridenko(2),  Iurii Lukianchuk(3)

1. Department of Computing and Systems, Higher School of Engineering and

Technology, University of La Laguna. Tenerife. Spain

2. Department of Energy Facilities of Ships and Marine Structures, Maritime

Institute. University of Sevastopol. Russia

3. Department of Computer Science, Faculty of Computer and Information

Technologies, Lutsk National Technical University. Ukraine

Abstract

The use of different types of renewable energysources has been growing very rapidly recently. This is especially true for the use of wind and solar energy to produce heat and electricity. Many advanced countries have already achieved a share of renewable energy sources in the total energy production balance of about 40-50 per cent. This is quite high, although the goal of reducing the level of CO2 in the earth's atmosphere has not yet been achieved...READ MORE

563

Studying unbalance and voltage conformity in residential distribution systems due to asymmetric photovoltaic connections

E. P. Simonetti, S. P. Simonetti, T. R. S. de Freitas, D. S. L. Simonetti

Department of Electrical Engineering. Federal University of Espírito Santo. Brazil

Abstract

As, in Brazil, residential distribution systemspresent two nominal voltages of supply depending on the state you are (127 V or 220 V, phase-neutral), the solution for photovoltaic systems connection are different. In 127 V, majority of insertions make use of 220 V device, in a phase-to-phase connection. This action can lead to unbalanced distribution of power flow in many situations, with associated problems...READ MORE

564

Analysis of low frequency in offshore wind inner-array systems

Iñaqui Arrambide

Department of Electrical Engineering. Escuela de Ingeniería de Guipúzcoa, University of the Basque Country. Donostia-San Sebastián. Spain

Abstract

Since large-scale offshore wind farms have been installed, generators have been constantly improving all the systems that make up these wind farms in order to obtain the cheapest energy price. Numerous improvements have been implemented to achieve this goal over the last few years, leading to a reduction in the levelised cost of energy (LCoE). In all projects using alternating current in both the collector system and the transmission system, the industrial frequency of 50/60 Hz has been used...READ MORE

565

Applications on power systems using HVDC-VSC technology

Iñaqui Arrambide

Department of Electrical Engineering. Escuela de Ingeniería de Guipúzcoa, University of the Basque Country. Donostia-San Sebastián. Spain

Abstract

This paper presents an analysis of the Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) technology in power systems since it was implemented experimentally in the late nineties to the present. The main features as well as the main applications are explained attending to current projects in operation...READ MORE

566

Energy Management for Ground-Generation Airborne Wind Energy Systems

Pablo Flores-Martín(1,2), Carolina Nicolás-Martín(1), Osmany R. Pérez-Aballe(3), Jorge González-García(4), David Santos-Martín(1)

1. Department of Electrical Engineering, Universidad Carlos III de Madrid. Spain

2. CT Ingenieros A.A.I. S.L. Madrid. Spain

3. Department of Electrical Engineering, University of Moa, Moa, Holguín. Cuba

4. Department of Aerospace Engineering, Universidad Carlos III de Madrid. Spain

Abstract

Airborne Wind Energy Systems (AWES) offer a promising alternative to conventional wind turbines, enabling access to highaltitude winds with greater energy yield and reduced infrastructure costs. However, integrating AWES into power grids poses challenges due to their cyclic power generation profile...READ MORE

567

Comparative Analysis of Single-Phase Shift and Extended Phase Shift Modulations in Dual Active Bridge Converters for Fast EV Charging

Mohamed R. Farid(1,2), Ahmed L. Elrefai(1,3), Sobhy M. Abdelkader(1,4)

1. Electrical Power Engineering Department, Faculty of Engineering, Egypt-Japan

University of Science and Technology (E-JUST) Alexandria. Egypt

2. Electrical Engineering Department, Benha Faculty of Engineering, Benha

University. Egypt

3. Electrical Power Engineering Department, Cairo University. Egypt

4. Electrical Engineering Department, Mansoura University. Egypt

Abstract

This paper presents a comprehensive comparisonbetween Single-Phase Shift Modulation (SPSM) and Extended Phase Shift Modulation (EPSM) in Dual Active Bridge (DAB) converters, focusing on their switching losses, performance, and efficiency under various load conditions. The analysis is conducted using SPICE-based simulations to evaluate the converters' behaviour under low, medium, and high-loading conditions...READ MORE

568

Optimal operation of Distributed Battery Energy Storage System

R. Chaer(1,2), G. Flieller(2), G. Casaravilla(1)

1. Institute of Electrical Engineering (IIE). Faculty of Engineering –

Universidad de la República Oriental del Uruguay. Montevideo. Uruguay

2. Administración Del Mercado Eléctrico (ADME)

Abstract

This paper presents an algorithm for the optimal-operable dispatch of distributed battery banks in systems with high integration of variable renewable energies. As a test case, the application of the algorithm is presented in a possible expansion of the Colombian system 2024-2039, subdivided into five regions each with its DBESS...READ MORE

569

Comparison between different electrolysis technologies under varying conditions

D. Tejada(1), A. Castro(1), A. Monterroso(1), E. López(1), J. Renau(2), M. A. Ridao(3)

1. El Arenosillo Energy Laboratory. Energy and Environment Area National Institute

for Aerospace Technology (INTA), Huelva. Spain

2. Escuela Superior de Enseñanzas Técnicas. Universidad Cardenal Herrera.

Valencia. Spain

3. Escuela Técnica Superior de Ingeniería. Universidad de Sevilla. Spain

Abstract

The use of renewable hydrogen is becomingincreasingly relevance as a sustainable alternative to conventional energy sources, particularly in the transport and industrial sectors. One of its main advantages is that it enables energy use without generating direct pollutant emissions, thus contributing to the reduction of greenhouse gases emissions and the mitigation of climate change...READ MORE

570

Transition mechanism of an Inductive-resistive Superconducting Fault Current Limiter (IR-SFCL)

Pilar Suárez, Belén Rivera, Alfredo Álvarez, Belén Pérez1

Lab. “Benito Mahedero” of Electrical Applications of Superconductors

Escuela de Ingenierías. Industriales, University of Extremadura

Abstract

Superconducting fault current limiters (SFCL) areprotective devices that limit the current in power lines when it suddenly increases above a certain safe level as a consequence of a fault. This element is connected in series with the line and has a null impedance when the line current is below the safe value (limit current) but significative increase the impedance when the line current tries to surpass this value...READ MORE

571

Stability analysis of an off-grid hybrid power plant for hydrogen production

A. Llamazares, S. Martín-Arroyo, A. Bestué Coarasa, M. García-Gracia

Department of Electrical Engineering EINA, Zaragoza University

Zaragoza. Spain

Abstract

A 500 kW off-grid hybrid system based onrenewable energies (PV and Wind) is designed to produce green hydrogen. This energy system includes a Battery Energy Storage System (BESS) to improve the grid stability. To control the power plant two strategies are assessed...READ MORE

572

Lifetime Extension of Wind Farms by a Low-Cost Energy-Autonomous IoT-Based Structural Health Monitoring System

A. Lopez-Martin, C. Castellano, M. Zivanovic, X. Iriarte, A. Carlosena

Institute of Smart Cities. Public University of Navarra. Pamplona. Spain

Abstract

The latest results of a research project pursuing anenergy-autonomous Structural Health Monitoring (SHM) system for wind farms are presented. The SHM system is based on the development of low-power IoT wireless nodes and electromagnetic harvesters to capture energy from low-frequency vibrations of wind towers...READ MORE

573

Development of a near-ground novel wind energy converter

K. Calautit(1), K. Velayutham(1), W.-G. Früh(2)

1. Katrick Technologies, Glasgow. United Kingdom

2. Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University,

Edinburgh. United Kingdom

Abstract

This paper investigates the performance of a novel wind energy capture system consisting of ducted oscillating aerofoils. The primary objectives of this study were to evaluate the system's ability to capture and focus wind energy, and its potential for scalability. The system is designed with modular units, each containing two aerofoils that can oscillate independently...READ MORE

574

Optimization of the RC branch of the LCL filter of a SiC-based inverter

S. Martín-Arroyo, M. García-Gracia, Á. Llamazares

Department of Electrical Engineering. EINA, Zaragoza University. Spain

Abstract

This work begins with the initial design of an LCLfilter for a 20 kW SiC inverter, and its response is experimentally analysed from the perspective of grid quality. Based on these results, a sensitivity analysis is carried out by varying the parameters of the RC branch. The objective is to identify the RC branch that achieves maximum efficiency in harmonic content reduction, as well as minimising losses...READ MORE

575

Empowering Rural Communities through Microgrids: The CEL-

RURAL Project Approach

L. Vargas(1), R. Vidal(1), J.R.D. Frejo(2)

1. Instituto Nacional de Técnica Aeroespacial (National Institute of Aerospace

Technology) Huelva. Spain

2 Departament of Ingeniería de Sistemas y Automática, Universidad de Sevilla.

Spain

Abstract

The CEL RURAL project has been conceived with the objective of promoting the implementation of renewable energy solutions in rural areas, with a view to enhancing the development of sustainable energy systems. The project has three overarching aims: first, to create energy selfsufficient Local Energy Communities (LECs); secondly, to optimise energy efficiency; and thirdly, to monitor energy systems for improved operation...READ MORE

576

Short term energy arbitrage in PV-battery grid-connected systems

Rodolfo Dufo-López, Juan M. Lujano-Rojas, José L. Bernal-Agustín, Jesús S. Artal-Sevil, Ángel A. Bayod-Rújula, Juan A. Tejero-Gómez

Department of Electrical Engineering. E.I.N.A., Zaragoza University. Spain

Abstract

In this work, we show the optimization of the dailyarbitrage operation of a PV-battery power generating system. Genetic algorithms (GA) metaheuristic technique is used for the optimization. A new arbitrage method is applied. An integer variable which can take one of three values (-1, 0 or 1) for each hour of the day decides the operation of the battery (charge/inactive/discharge), considering as inputs the average hourly irradiance, temperature and electricity price forecast for the day-ahead, and the state of charge (SOC) at the first hour of the day-ahead...READ MORE

577

Technical Design Report for a Photovoltaic Self-Consumtion Installation with Surplus Injection

Luis Fernando García Galvis(1), Carlos Ponce Corral(2), José Antonio Domínguez Navarro(1,3)

1. School of Doctorate, PhD Program in Renewable Energy and Energy Efficiency,

Zaragoza University. Spain

2. Department of Industrial Engineering and Manufacturing – Autonomous

University of Juárez City, Chihuahua. México

3. Department of Electrical Engineering - EINA Zaragoza University. Spain

Abstract

This technical report documents a photovoltaic(PV) installation with self-consumption and surplus injection installed in Spain, which was designed for residential consumption and started up in an isolated single-family home with connection to the electricity distribution grid. Photovoltaic solar panels, inverter, lithium-ion batteries and a bidirectional meter have been integrated by this system...READ MORE

578

A MILP Approach to Optimising Energy Storage in a Commercial Building

Tomás Barosa Santos, Filipe Tadeu Oliveira, Hermano Bernardo

Centre for Power and Energy Systems. INESC TEC. Porto. Portugal

Abstract

To achieve carbon neutrality by 2050, commercialbuildings have installed photovoltaic systems to reduce carbon emissions and operational costs. Nevertheless, PV generation does not always match the building’s energy demand profile, therefore storage systems are needed to store excess energy and supply it when necessary...READ MORE