Rui Melicio

Rui Melicio
ICT, University of Évora; IDMEC, Instituto Superior Técnico, University of Lisbon, Portugal

IEEE Senior Member; EASN Member; AIAA Member

About

272
Publications
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2,730
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Introduction
ICT, University of Évora; IDMEC, Instituto Superior Técnico, University of Lisbon, Portugal

Publications

Publications (272)
Conference Paper
Any location on Earth might be considered a subject to an asteroid impact because, as previous studies show, they are a proven global threat. the consequences of a collision could be catastrophic, even though such events are rare to occur in a person's lifetime. Tsunami waves can constitute the greatest threat as the Earth's surface is mostly water...
Article
Full-text available
Asteroid impacts are a proven global threat, meaning that any location on Earth might be a subject to their consequences. Such collisions are not likely in any person’s lifetime, but their aftermath could be catastrophic. As Earth’s surface is mostly water, a water impact is more probable than a ground impact, and tsunami waves could pose a signifi...
Conference Paper
The impact of asteroids is an established global threat. Every location on Earth has a similar, a priori asteroid impact probability, which is limited by the current humankind's knowledge of hazardous celestial objects. Asteroid impacts are a low probability but high consequences event, making them a hard concept to grasp by the public as such occu...
Article
Full-text available
WPT system performances highly depend on the misalignment scenarios of the transmitter or the receiver coil. In this contribution, the authors analyze the effect of the misalignment influencing factors of the integrated WPT-PLC system receiving coil on the system performances. The simulations and experimental analysis are based on power efficiency...
Article
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The Light Detection and Ranging (LIDAR) is a time-of-flight altimeter instrument being developed for the HERA mission, designated as Planetary ALTimeter (PALT). PALT is positioned in the center of the top face of the HERA probe, and therefore, it cannot use radiators to stabilize its internal temperature. The contribution of this paper is the desig...
Article
In this paper, a gyrostat satellite in a circular orbit with its gyrostatic moment tangent to the orbital plane and collinear with the orbital speed is studied regarding its equilibria, bifurcation of equilibria, and asymptotic stability conditions. In the general case, where any gyrostat angular momentum is aligned with any of the orbital coordina...
Article
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Near-Earth Objects (NEO) are the topic of several research studies, with objects smaller than 1km in size posing the most threats and being the less understood of this scientific domain. The Asteroid Impact and Deflection Assessment (AIDA) mission involves NASA and ESA with the main mission goal to perform and analyze the asteroid deflection using...
Article
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Industry 4.0 is a paradigm consisting of cyber-physical systems based on the interconnec-tion between all sorts of machines, sensors, and actuators, generally known as things. The combination of energy technology and information and technology communication (ICT) enables measurement , control, and automation to be performed across the distributed g...
Preprint
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A finite strain finite element (FE)-based approach to element-free Galerkin (EFG) discretization is introduced, based on a number of simplifications and specialized techniques in the context of a Lagrangian kernel. In terms of discretization, a quadratic polynomial basis is used, support is determined from the number of pre-assigned nodes for each...
Article
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This paper proposes an aerial data network infrastructure for large geographical area surveillance systems. The work presents a review of previous works from the authors, existing technologies in the market and other scientific work, with the goal of creating a data network supported by Autonomous Tethered Aerostat Airships used for sensor fixing,...
Article
The aim of this work is to evaluate what happens to the spacecraft materials beyond the spacecraft End of Life. A review of spacecraft external materials and effects of space environment is presented. This paper results from a continued study on spacecraft material degradation, and space debris formation in geostationary orbit (GEO). In this paper...
Article
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Many industries, such as aeronautics construction are still equipped with legacy machines and are not keen to change old, however fully functional, equipment to new ones. Hence, an upgrade must be found to cope the legacy and fully functional machines to IoT technologies. This paper is a contribution to embrace those challenges in a new IoT archite...
Conference Paper
Full-text available
In the last two decades, the European Space Agency (ESA) has been working on emerging spaceborne Lidar devices to investigate the Earth’s atmosphere, and Earth and other Solar system topographies thanks to various profiling and altimeter Lidar instruments. Examples of these are the ALADIN instrument in the ADM-Aeolus mission and the BELA altimeter...
Article
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ТНE PURPOSE. The objective of this study is to investigate the possibilities of longer distance resonant energy transmission applying Wireless Power Transfer (WPT) in the MHz frequency range. The planned final purpose is the energy to be transferred to all types (aerial and terrestrial) of electric vehicles (EV), mainly for the battery charging at...
Article
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This paper presents a neural-network based nonlinear behavioral modelling of I/O buffer that accounts for timing distortion introduced by nonlinear switching behavior of the predriver electrical circuit under power and ground supply voltage (PGSV) variations. Model structure and I/O device characterization along with extraction procedure were descr...
Article
This paper models a hypothetical Apophis asteroid impact on an chosen deep ocean point on the globe. To assess the potential vulnerabilities of an exposed coast population, the impact effects were assessed as a function of the distance to the asteroid's impact point as well as altitude for the tsunami case. All the tools and models used are valid a...
Article
Purpose-The Asteroid Impact & Deflection Assessment (AIDA) is collaboration between the NASA DART mission and ESA Hera mission. The aim of these missions is to study the asteroid deflection through a kinetic collision. DART spacecraft will collide with Didymos-B, while ground stations monitor the orbit change. Hera spacecraft will study the post-im...
Article
Full-text available
The hybrid three-phase rectifiers (HTR) consist of parallel associations of two rectifiers (rectifier 1 and rectifier 2), each one of them with a distinct operation, while the sum of their input currents forms a sinusoidal or multilevel waveform. In general, rectifier 1 is a GRAETZ (full bridge) (can be combined with a BOOST converter) and rectifie...
Article
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Nowadays, satellite images are used in many applications, and their automatic processing is vital. Conventional integer grey-scale edge detection algorithms are often used for this. This study shows that the use of color-based, fractional order edge detection may enhance the results obtained using conventional techniques in satellite images. It als...
Article
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This paper presents a computer application to assist in decisions about sustainability enhancement due to the effect of shifting demand from less favorable periods to periods that are more convenient for the operation of a microgrid. Specifically, assessing how the decisions affect the economic participation of the aggregating agent of the microgri...
Article
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This paper addresses a support information system for the planning of aircraft maintenance teams, assisting maintenance managers in delivering an aircraft on time. The developed planning of aircraft maintenance teams is a computer application based on a mathematical programming problem written as a minimization one. The initial decision variables a...
Article
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Many image processing algorithms make use of derivatives. In such cases, fractional derivatives allow an extra degree of freedom, which can be used to obtain better results in applications such as edge detection. Published literature concentrates on grey-scale images; in this paper, algorithms of six fractional detectors for colour images are imple...
Article
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In this paper, a new way to mitigate the current interactions is proposed. The problem of current interactions arises when a modular three-phase (3-phase) rectifier (three single-phase modules) with boost converter for power factor correction (PFC) is used. A new differential-mode choke filter is implemented in the developed boost converter. The ch...
Article
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In the aviation sector, human factors are the primary cause of safety incidents. Intelligent prediction systems, which are capable of evaluating human state and managing risk, have been developed over the years to identify and prevent human factors. However, the lack of large useful labelled data has often been a drawback to the development of thes...
Article
This paper focuses on a support management system for the management and operation planning of a microgrid by the new electricity market agent, the microgrid aggregator. The aggregator performs the management of microturbines, wind and photovoltaic systems, energy storage, electric vehicles, and usage of energy aiming at having the best participati...
Article
Full-text available
The Asteroid Impact & Deflection Assessment (AIDA) is a collaboration between the NASA DART mission and ESA Hera mission. The aim scope is to study the asteroid deflection through a kinetic collision. DART spacecraft will collide with Didymos-B, while ground stations monitor the orbit change. HERA spacecraft will study the post-impact scenario. The...
Article
Full-text available
This paper has resulted from a continued study of spacecraft material degradation and space debris formation. The design and implementation of a thermal vacuum cycling cryogenic facility for the evaluation of space debris generation at a low Earth orbit (LEO) is presented. The facility used for spacecraft external material evaluation is described,...
Article
Full-text available
Due to the increasing necessity for electrical demand, the microgrids (MGs) based on distributed generations (DGs) within power electronic interfaces are being extended to improve the traditional network control. One of the common ways to achieve the power sharing among the resources on an islanding MG is to use droop control approach, performing b...
Article
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This paper investigates the feasibility of using the three-dimensional omnidirectional inductive channel for power transfer and as a power line communication (PLC) for ground-based vehicle, electric air vehicle, or space applications. The simulation results were performed by the advanced design system software using lumped equivalent circuit model....
Article
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In recent years, power grid infrastructures have been changing from a centralized power generation model to a paradigm where the generation capability is spread over an increasing number of small power stations relying on renewable energy sources. A microgrid is a local network including renewable and non-renewable energy sources as well as distrib...
Article
This paper presents a methodology and the experimental validation for collaborative load transportation using two UAV (Unmanned Aerial Vehicle). The state variables are estimated, based on measurements from motion sensors installed on-board. Control and estimation solutions were required to ensure the stability of the system, while guaranteeing nul...
Article
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This paper is about the problem of the management of an aggregator of electric vehicles participating in an electricity market environment. The problem consists in the maximization of the expected profit through a formulation given by a stochastic programming problem to consider the uncertainty faced by the aggregator. This uncertainty is due to th...
Conference Paper
Full-text available
The NASA DART and the ESA HERA missions aim to provide an experiment in asteroid defection, though a kinetic collision. DART spacecraft will be sent to collide at high speed, approximately at 6.6 km/s, with the smaller asteroid, usually called Didymoon of the binary asteroid system Didymos. HERA spacecraft will be sent to study the effects of the i...
Article
This paper is on the study of the Equilibria of a Gyrostat Satellite on a Circular Orbit when its angular momentum it's not aligned with any principal axis or when the angular momentum is not aligned with orbital coordinate frame stated in this paper as the general case. This study is conducted to achieve through the use of Euler angles which are d...
Article
This paper presents the identification, development and simulation of a complex order, third generation CRONE (Commande Robuste d’Ordre Non Entier) controller for a new Darrieus type vertical-axis wind turbine design. A prototype of this wind turbine was developed and tested in a wind tunnel. Data acquired in the tests were used to develop and vali...
Article
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Shadow of Obstacles (SoO) on a PV Panel is classified depending on time with changing pattern of the shadow. Due to obstacles, the performance of a silicon c-Si PV panel reduces by a significant level. Different types of obstacles cast shadow on the panel and interrupt to get irradiation reducing the generated power. The simulation model is impleme...
Article
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This paper presents a traffic light system based on wireless communication that provides a support infrastructure for intelligent control in the context of smart cities and aerotropolis areas. An aerotropolis is a metropolitan subregion with an infrastructure centered an airport. Traffic intensity is increasing all over the world. Intelligent dynam...
Article
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This paper is about the dust effect impact on photovoltaic systems on the profit of an electricity market agent acting as an aggregator of photovoltaic power, wind power, thermal power, and an energy storage system. Energy storage ensures arbitrage and smoothing of the variability of photovoltaic power and wind power. The market agent intends to de...
Chapter
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The thesis focuses on the study of the electrical component of the electromagnetic field, radiated by the wireless energy transfer system into the adjacent environment. The wireless energy transfer and the wireless data transfer are studied simultaneously, focusing on the appropriate wireless communication channel between the transmitter and the re...
Chapter
This paper addresses the scenario reduction for stochastic optimization applied to short-term trading of photovoltaic (PV) power. Stochastic optimization becomes a useful technique when leading with problems involving uncertainty. Short-term trading of PV power in electricity markets is an example of a problem involving a high level of uncertainty,...
Chapter
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This chapter is a synthesis about the solar resource aiding in the way of a sustainable future uphold by photovoltaic conversion of solar energy into electric energy. A view is presented about: irradiance and irradiation on the earth; current and emerging technology of photovoltaic systems; hot-spot effect due to shading on photovoltaic systems; jo...
Article
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This paper describes the conception and experimental setup of a new concept for a Vacuum Ultraviolet with extreme Thermal Vacuum Cycle system and the evaluation of LEO satellites materials with the equipment. The system was developed in the framework of a study of spacecraft debris generation due to satellites materials degradation, when exposed to...
Article
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This paper is about a support information management system for a wind power (WP) producer having an energy storage system (ESS) and participating in a day-ahead electricity market. Energy storage can play not only a leading role in mitigation of the effect of uncertainty faced by a WP producer, but also allow for conversion of wind energy into ele...
Conference Paper
Full-text available
The AIDA (Asteroid Impact & Deflection Assessment) is a collaboration between NASA DART mission and ESA Hera mission. The aim is to study asteroid deflection through a kinetic collision. For this mission two spacecrafts will be developed DART provided by NASA and HERA provided by ESA. DART spacecraft will collide with Didymoon, while the orbit chan...
Conference Paper
This paper addresses a development of a support management system for an aggregator bidding in an electricity day-ahead market. The aggregator manages wind power and photovoltaic power systems, thermal power units and demand response on energy usage of end-users. The goal of the aggregator is profit maximization in the day-ahead market by optimal c...
Conference Paper
This paper is about aerostats powered by c-Si PV modules (PVMd) used in aerial surveillance or reconnaissance tethered to the ground and bouncing in the air for long periods. PV cells of the modules are prone to be partially or fully shaded during these periods, eventually delivering hot-spot conditions in the shaded cells. Hot-spot (HSt) are prone...
Chapter
This chapter presents a simulation of a study to improve the ability of an offshore wind system to recover from a fault due to a rectifier converter malfunction. The system comprises: a semi-submersible platform; a variable-speed wind turbine; a PMSG; a 5LC-MPC; a fractional PI controller using the Carlson approximation. Recovery is improved by shi...
Conference Paper
Full-text available
This paper is about a system for supporting action of management in an industrial building integrated photovoltaic system by a supervising and monitoring data collector system of environmental data. The integrated photovoltaic system is a grid-connected rooftop-mounted having energy storage with the main purpose of supplying energy for an industria...
Conference Paper
Full-text available
This work emphasizes on the environmental and organizational pressure, namely, the pressure and fatigue induced in aircraft professionals. Safety is the main driver of aviation; environmental and organizational conditions, including extended working hours, have a negative impact on the performance of aircraft maintenance professionals and on aircra...
Conference Paper
Full-text available
In this paper, a three-phase hybrid rectifier is proposed, employing a boost converter without the addition of isolation transformer and output voltage control. This topology is usually considered to be not viable due to the current interactions. In order to mitigate those interactions, the boost inductor is replaced by a magnetically coupled induc...
Technical Report
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This Guide of Good Practices of Technology Transfer emerges as part of one of the activities of the AERIS project, co-financed by the framework program POCTEP 2014-2020 (Cross-Border Cooperation Spain - Portugal). The objective of this project is to promote business innovation, transfer and technological development and integration of the aeronauti...
Poster
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LIDAR and rangefinders are among the most important instruments for an asteroid mission, a consequently a critical technology for planetary defense. They support spacecraft navigation, from fly by to landing operations and can also provide scientific data, such as relative velocity, falling velocity and reflectance measurements at laser wavelength....
Chapter
This paper addresses a development of a support management system for a power system aggregator managing a fleet of electric vehicles and bidding in a day-ahead electricity market. The support management system is modeled by stochastic mixed integer linear programming approach. The charge and discharge of the batteries of the fleet of vehicles are...
Chapter
This paper focuses on PV power conversion under different internal and environmental conditions with non-constant load, connected to a smart grid system. Due to environmental conditions, the PV system is a non-linear system and difficult to predict the power conversion. In the aspect of internal variables, it includes the five parameters of the sin...
Chapter
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This paper addresses the conception of a prototype based in an implementation of a microcontroller proposed as an alternative solution to programmable logic controllers for controlling a capacitor bank. The control considered is in accordance with the Portuguese Energy Services Regulatory Authority. The prototype uses information concerned with the...
Article
This paper addresses a strategy for decision-making of sustainable aggregation for clean energy participating in a day-ahead electricity market. The clean energy consists of wind turbines, photovoltaic arrays and energy storage, contributing to a better resilience of the system. The power delivered by a wind turbine or by a photovoltaic array is mo...
Article
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This paper introduces the stress, pressure and fatigue as part of the Dirty Dozen and Human Factors procedures. Safety is the main driver in aviation related professions. Maintenance related personal are constantly subjected to several external circumstances that might originate errors in the performance or evaluation in maintenance related tasks....
Chapter
Full-text available
The focus of this chapter is the electromagnetic interference (EMI) and the electromagnetic compatibility (EMC) that the wireless power transfer (WPT) systems reveal as problems. The wireless power transfer (WPT) was introduced by Nikola Tesla more than one hundred years ago, and only recently it attracted the attention of specialists, due to the i...
Chapter
Full-text available
This chapter focuses on mid-range wireless power transfer (WPT) systems applied to electric vehicle (EV) battery chargers. The WPT is recently considered as an efficient electric energy transfer process between two or more points in space, without wiring. The technology associated with each specific process of WPT differs from case to case dependin...
Chapter
This book chapter focuses on mid-range Wireless Power Transfer (WPT) systems applied to Electric Vehicle (EV) battery chargers. The WPT is recently considered as an efficient electric energy transfer process between two or more points in space, without wiring. The technology associated with each specific process of WPT, differs from case to case, d...