Pedro Rosas

Pedro Rosas
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Pedro verified their affiliation via an institutional email.
Verified
Pedro verified their affiliation via an institutional email.
  • Ph.D.
  • Professor (Full) at Federal University of Pernambuco

About

55
Publications
13,670
Reads
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739
Citations
Current institution
Federal University of Pernambuco
Current position
  • Professor (Full)
Additional affiliations
May 2003 - present
Federal University of Pernambuco
Position
  • Professor (Full)
January 2004 - present
Federal University of Pernambuco
Position
  • Professor
February 1999 - present
Federal University of Pernambuco
Position
  • Professor (Associate)
Education
November 1999 - July 2003
Technical University of Denmark
Field of study
  • Electrical Engineering
June 1997 - June 1999
Federal University of Pernambuco
Field of study
  • Wind Engineering
January 1991 - December 1995
Federal University of Pernambuco
Field of study
  • Electrical Engineering

Publications

Publications (55)
Article
Full-text available
The transition to a low-carbon energy matrix has driven the electrification of vehicles (EVs), yet charging infrastructure—particularly fast direct current (DC) chargers—can negatively impact distribution networks. This study investigates the integration of Battery Energy Storage Systems (BESSs) with the power grid, focusing on the E-Lounge project...
Article
Full-text available
The adoption of electric vehicles (EVs) has shown exponential growth in recent years, with expectations for further development in the years to come. With such significant expansion, efforts and incentives are shifting from EV sales to projects aimed at expanding charging station infrastructure. In order to sustain this growing trend, a reliable an...
Article
Full-text available
The energy supply for isolated systems remains a current challenge in Brazil and worldwide, particularly when known solutions are compared regarding their cost, ability to supply energy on demand, and sustainability. In this context, green hydrogen, which has been considered one of the main paths for the decarbonization of the energy chain, is also...
Preprint
Full-text available
The energy supply for isolated systems remains a current challenge in Brazil and worldwide, particularly when known solutions are compared regarding cost, the ability to supply energy on demand, and sustainability. In this context, green hydrogen, which has been considered one of the main paths for the decarbonization of the energy chain, is also s...
Article
Full-text available
Microrredes são sistemas integrados de recursos energéticos distribuídos e cargas elétricas operando como uma rede única e autônoma, em paralelo ou “ilhada” da rede de distribuição. Este artigo descreve a implementação de uma microrrede híbrida para fins didáticos, capaz de simular diferentes cenários, incluindo aplicações operacionais do sistema d...
Article
The electric distribution sector is facing significant challenges in integrating distributed energy resources (DERs), with most assessment methodologies being primarily tested on standard feeders. However, given the nature of electric distribution systems, each feeder is unique and constantly changing, emphasizing the need for customized and update...
Article
Full-text available
The energy transition towards a low-emission matrix has motivated efforts to reduce the use of fossil fuels in the transportation sector. The growth of the electric mobility market has been consistent in recent years. In Brazil, there has been an accelerated growth in the sales rate of new electric (and hybrid) vehicles (EVs). Fiscal incentives pro...
Article
Full-text available
Uma estratégia de avaliação dos parâmetros que influenciam a rede elétrica durante o carregamento de veículos elétricos é apresentada neste trabalho. A análise proposta oferece subsídios para gestão de redes elétricas, viabilizando uma avaliação do impacto do carregamento de veículos, possibilitando adoção de medidas para garantir a operação adequa...
Article
Full-text available
Microgrids have emerged as a popular solution for electric energy distribution due to their reliability, sustainability, and growing accessibility. However, their implementation can be challenging, particularly due to regulatory and market issues. Building smaller-scale microgrids, also known as nanogrids, can present additional challenges, such as...
Article
Full-text available
In recent years, the integration of electric vehicles (EV) into urban fleets has seen a significant rise, leading to a considerable increase in the number of EV chargers and fast charging stations (FCS) connected to distribution networks. Depending on the characteristics of the electrical power system, such as short-circuit power and voltage harmon...
Article
Full-text available
This work discusses the use of a battery energy storage system applied to the smoothing of power generated at the output of wind turbines based on a fuzzy logic power control. The fuzzy control logic proposed can perform the aforementioned activity while the state of charge of the energy storage system is maintained within operational limits. In or...
Conference Paper
Full-text available
Este artigo avalia o emprego de sistemas de armazenamento de energia integrados à geração solar fotovoltaica, para incrementar a flexibilidade operativa e mitigar restrições de transmissão, devido à limitada capacidade de despacho do Sistema Interligado Nacional, frente à alta penetração de fontes renováveis de energia. Para a avaliação técnica é u...
Article
Full-text available
One of the challenges faced by Brazilian distribution utilities to enable the connection and operation of microgrids (MGs) is the absence of a solid set of technical standards in the country. An alternative has been to use and adapt existing standards applied to micro- and mini-distributed generation. In this context, this paper presents an analysi...
Article
Full-text available
Paleoclimate simulations are generally performed using coarse global climate models. However, validation of these simulations using a local dataset may be penalized by the coarse grid of the global models. Using a regional climate model, which benefits from the use of higher resolution in a limited area and specific period of time, may help improve...
Article
Full-text available
Electric vehicle (EV) charging may impose a substantial power demand on existing low voltage (LV) and medium voltage (MV) networks, which are usually not prepared for high power demands in short time intervals. The influx of E-mobility may require an increase in grid reinforcements, but these can be reduced and optimized by a combination of new tec...
Article
Full-text available
Increasing wind generation insertion levels on electrical grids through power converters may cause instabilities in the AC grid due to the intermittent wind nature. Integrating a Battery Electric Energy Storage System (BESS) in wind generation can smooth the power injection at the Common Coupling Point (PCC), contributing to the power system voltag...
Article
One of the challenges for the development of electric mobility projects is to estimate the potential demand for charging stations for electric vehicles, as this is an essential and basic information to assess the technical- economic feasibility and long-term sustainability of Electric Stations. Such an estimate is even more complex when data is s...
Conference Paper
Worldwide, mobility electric has represented a tendency to achieve environmental goals. However, the expansion of charging Electric Vehicles (EVs) on power distribution networks could cause problems related to energy quality and reliability. Battery Energy Storage Systems (BESS) associated with Photovoltaics (PV) systems are a promising solution fo...
Article
Wind turbines operate almost uninterruptedly, and their operation is often subject to harsh environments, as well as complex and dynamic loads. Fourier analysis, a standard diagnostic technique, presents some limitations regarding the use of non-stationary, non-periodic, noisy data, which is precisely the case with wind turbine data. Due to these l...
Article
Full-text available
As tecnologias de armazenamento de energia estão sendo consideradas no Brasil e no mundo como solução de vários problemas dos sistemas elétricos relacionados com a inserção de grandes blocos de energia eólica, tornando os sistemas mais seguros e confiáveis. O número de parques eólicos tem crescido muito nos últimos anos, inserindo uma produção esto...
Article
Full-text available
Este artigo tem como principal finalidade mostrar algumas diretrizes para a inclusão de técnicas de armazenamento de energia, em alternativa à utilização de geradores a óleo diesel, com o intuito de obter economia nas contas de energia devido à elevada tarifação nos horários de maior carga no sistema elétrico. Uma breve explanação dos equipamentos...
Article
Full-text available
Este trabalho apresenta os resultados de um estudo prévio de viabilidade de geração de energia para uma comunidade isolada. O objetivo consiste em dimensionar e determinar um sistema de fornecimento de energia elétrica não conectado a rede de distribuição convencional para atender uma comunidade isolada específica contendo 50 famílias. A determinaç...
Article
The share of renewable energy sources has increased worldwide, especially those considered unconventional (i.e. without considering hydropower). Besides proved as economically competitive, these sources cause less environmental impacts when compared to other sources of traditional power generation such as coal and oil. However, solar and wind power...
Article
The share of renewable energy sources has increased worldwide, especially those considered unconventional (i.e. without considering hydropower). Besides proved as economically competitive, these sources cause less environmental impacts when compared to other sources of traditional power generation such as coal and oil. However, solar and wind power...
Article
This paper investigates the performance of the 12 entropy-based features for the monitoring and detection of bearing faults. These entropy measures were proposed both in time, frequency and time-frequency domain. Probability mass function (PMF) was extracted from the time waveforms using four different methods: (i) via power spectral density, (ii)...
Article
Full-text available
Wind turbine installation is growing consistently and fast. Wind turbines are getting bigger in size and power, what incurs that a simple unit breakdown causes large energy losses. They operate under varying, complex and dynamic loads due to the environmental conditions, such as wind shear, turbulence, gusts, etc. Condition-based and prognostic and...
Article
Full-text available
This paper presents the development of a supervisory controller and the main challenges of integrating wind and solar energy into an existing grid with 100% diesel generation. The supervisory controller has been developed for keeping the safety and stability of the network a R&D project financed by the Utility CELPE. The controller keeps the balanc...
Article
Full-text available
This work proposes an approach to simulate wind flow fields around an urban environment with the aim of evaluating the potential impact of buildings on the general wind patterns and power production using the current generation of commercial wind turbines. The simulation process was performed with the aid of accessible computational tools that can...
Article
This paper presents an analysis of the experimental measurements of fast transients and their electromagnetic interference on the protection system in air isolated distribution substations. Transients were recorded in the relay inputs of potential and current transformers due to switching operations in a 69kV bus bar. A peak overvoltage of up to 6....
Article
Full-text available
Este artigo apresenta o desenvolvimento e a implementação de um sistema de controle baseado em inteligência artificial aplicável a sistemas industriais com o objetivo de aumentar a eficiência energética. O sistema de controle desenvolvido utiliza Redes Neurais Artificiais- RNA em conjunto com um controlador linear do tipo Proporcional Integral-PI e...
Article
Full-text available
The POWWOW project (Prediction of Waves, Wakes and Offshore Wind, a EU Coordination Action) aimed to develop synergy in the fields of wind and wave predictions from short to resource timescales by integrating modelling approaches currently used by the communities separately. The project aimed to help these research communities by establishing virtu...
Conference Paper
This paper presents a reduced order model for grid connected wind turbines with doubly fed induction generators. The model is based on the field oriented control of the generator, considering that the rotor is fed by an ideal current regulated voltage source. This assumption makes the order if the induction machine model to be reduced to three but...
Article
Full-text available
Neste artigo, apresentam-se a modelagem de aerogeradores e a análise dos efeitos da sua conexão em redes elétricas. São contempladas três diferentes topologias de turbinas: com gerador de indução com rotor tipo gaiola, com gerador de indução de dupla alimentação e com gerador síncrono a ímãs permanente. Em todos os casos, foi considerada a conexão...
Conference Paper
This paper presents the main limiting operational factors of planning wind-diesel hybrid power systems. The Fernando de Noronha Island, the largest wind-diesel system installed in Brazil, is used as study case. The main operational factors analysed in this paper are the voltage level, the diesel operational limits and electrical losses. The main po...
Article
This paper presents a wind model, which has been developed for studies of the dynamic interaction between wind farms and the power system to which they are connected. The wind model is based on a power spectral description of the turbulence, which includes the coherence between wind speeds at different wind turbines in a wind farm, together with th...
Article
Full-text available
This paper presents the analysis of increasing wind penetration on the Fernando de Noronha island wind/diesel system. The goal is to augment the wind energy penetration to around 25% and increase fuel savings while maintaining system simplicity and robustness. The challenge is to ensure reliable and stable supply without using storage devices and a...
Article
Full-text available
Due to the increasing number of wind power plants all over the world, many studies have been carried out to assess the interaction of such plants with the distribution grid. The electrical power generated by wind turbines is strongly affected by fluctuations in the wind speed and structural vibration excitation, leading to undesired disturbances on...
Conference Paper
Full-text available
A potência elétrica produzida por turbinas eólica é fortemente afetada por variações na velocidade de vento, causando distúrbios na rede elétrica. Este artigo apresenta os resultados de medidas realizadas no Centro Brasileiro de Energia Eólica (CBEE) para analisar o comportamento de uma turbina eólica e de sua influência na rede elétrica sob condiç...
Conference Paper
Full-text available
Due to the recent increase of wind power plants in all over the world many studies have been carried out to assess the interaction of such plants with the distribution grid. The electrical power produced by wind turbines is strongly affected by fluctuations in the wind speed and this may cause disturbances on electrical grid. In Brazil the interest...
Conference Paper
Full-text available
Due to the recent increase of wind power plants in all over the world, many studies have been carried out to assess the interaction of such plants with the distribution grid. The electrical power produced by wind turbines is strongly affected by fluctuations in the wind speed and this may cause disturbances on electrical grid. In Brazil, the intere...
Article
Full-text available
The Brazilian market for wind power will grow considerably in years to come. Following a governmental decision to support, in a first phase, 1,100 MW from wind power, the national power system is going to face a huge increment on wind participation, particularly within the subsystems in which the country is divided. Brazil is well known, among powe...
Article
Full-text available
The continuing growth of grid connected wind turbine generation systems worldwide has driven research efforts in understanding their dynamic behaviour and highlighted the importance of grid integration studies. Within this context, this work develops a systematic analysis of the dynamic behaviour of wind turbines during transient disturbances of th...
Article
Full-text available
Resumo – Este artigo apresenta comparações de ações de economia de energia aplicada em sistemas industriais de bombeamento e ventilação. As comparações são baseadas em dados experimentais coletados na simulação de diferentes processos executados no laboratório de eficiência energética da Universidade Federal de Pernambuco. Os sistemas de ventilação...

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