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  • Utilização de redes sensoriais "wireless" na promoção da eficiência energética em ambiente doméstico
    Publication . Gano, António; Rocha, Pedro A.; Campos, António Miguel de; Martins, Maria João
    A contribuição das tecnologias de electrónica, computação e comunicação de dados para o aumento da eficiência energética em edifícios residenciais e para a promoçõa de redução do consumo energético por parte dos utilizadores domésticos tem vindo a merecer um aumento de atenção por parte do sector de construção europeu e das Instituições de Investigação e Desenvolvimento. Neste artigo, apresenta-se um projecto em curso que tem como principal objectivo o desenvolvimento de um sistema de gestâo energética de baixo custo, projectado de modo afacilitar a promoção de uma maior eficiência no consumo de energia no segmento residencial. O sistema interagirá de um modo não intrusivo com os utilizadores, recolhendo informação útil para os orientar e auxiliar no esforço de redução de consumo e do valor da sua factura energética, assegurando condições de conforto e bem-estar na habitação. A infra-estrutura tecnológica que possibilita a monitorização ambiental e o contolo energético tem por base uma rede digital distribuída, com diversos nós sensoriais inteligentes, e uma aplicação de contolo e gestão da informação, actualmente em fase de desenvolvimento. Apresentam-se as actividades de I&D em curso e referem-se áreas consideradas mais importantes para as actividades de desenvolvimento futuro do "software" aplicacional do actual sistema.
  • The H2Excellence Project: Fuel Cells and Green Hydrogen Centers of Vocational Excellence towards affordable, secure, and sustainable energy for Europe [Resumo]
    Publication . Gano, António; Pinto, P.J.R.; Esteves, M. Alexandra; Rangel, C. M.
    ABSTRACT: The demand for green hydrogen (H2) and related technologies is expected to increase in the coming years mainly framed by drivers such as climate change and energy security of supply amid the European and global energy crises. REpowerEU Plan called for an intensification of hydrogen delivery targets, that will bring large-scale adoption of hydrogen production and applications in various sectors, stressing the need for a skilled workforce in the emergent hydrogen markets. To that end, the Erasmus+ European H2Excellence transnational project[2] has gathered 24 partners across the EU, to establish a Platform of Vocational Excellence in the field of fuel cells and green hydrogen technologies, with an educational and training offer that will tackle identified skill gaps and implement life-long learning opportunities. The project aims to become a benchmark in training and knowledge transfer, contributing to the integration of quality employment into green hydrogen local innovative systems approaching the entire hydrogen value chain.
  • Smart battery management systems: towards an efficient integration of electrical energy storage in smart regions
    Publication . Gano, António; Silva, Hugo M.; Correia, João Bernardino; Martins, Maria João
    Electrical energy storage systems for electric vehicles or stationary applications will be important actors in Smart Region's energy scenarios, strongly contributing to increase the efficient and sustainable use of available resources. However, massive integration of such systems stillposes many problems, requiring enhancements in batteries's life time, autonomy, reliability and cost. The development of new smart and accurate battery management systems able to communicate with a broad range of smart devices and energy management systems, to account with users' needs and smart management directives, are essential to operate such battery based energy storage systems, improving their overall performance. The paper discusses some of the technological developments needed in this domain and the requirements of smart battery management systems to comply with, presenting a modular hardward platform, developed at LNEG, as an example of required structure and functionalities, relevant both in electrical mobility and decentralized smart-grid energy storage systems.
  • Em direcção à Energia Zero/Towards Zero Energy
    Publication . Goncalves, Helder; Ramalho, Álvaro; Gano, António; Correia, João Bernardino; Graça, João Mariz; Aelenei, Laura Elena; Panão, Marta Oliveira; Camelo, Susana
  • Potential for hydrogen production associated to water and food in off-grid communities of Southern Africa
    Publication . Rodrigues, Luiz; Araujo, Luis; Gano, António; Pinto, P.J.R.; Simoes, Sofia; Brito, Paulo; Monjane, Armindo; Rangel, C. M.
    ABSTRACT: Solar energy is called to meet electricity demands for isolated, off-grid communities in Africa. However, solar electric energy is intermittent and can be stored, for a limited amount of time, in batteries, which are expensive and cause serious environmental impacts at the end of their lifetime. Conversion of the surplus electric energy to green hydrogen through water electrolysis and back to electricity, when needed, using electrolyser-fuel cells systems, is examined as a potential solution to meet the water-energy-food nexus in Southern Africa. In the framework of the Agrivoltaics concept, the main constrains, opportunities and parameters to consider its applicability are presented and discussed, in terms of its technical, economic, environmental and social impacts. In the second phase of this work the developing of a PEM electrolyser for connection to a solar PV power source and a fuel cell device, for a stand-alone application, is proposed, ensuring high reliability and energy conversion efficiencies, as well as adequate transient response and a competitive cost. It is intended as a low-carbon energy system, realising the potential for synergy in the Agrivoltaic concept, aligned with global and regional sustainability goals.
  • A Distributed Smart Battery Management System: sBMS, for Stationary Energy Storage Applications
    Publication . Gano, António; Rangel, C. M.
    ABSTRACT: Currently, electric energy storage systems for stationary applications have known an increasing interest, namely with the integration of local renewable energy power sources into energy communities. Li-ion batteries are considered the leading electric storage devices to achieve this integration, and Battery Management Systems (BMS) are decisive for their control and optimum performance. In this work, the advancement of a smart BMS (sBMS) prototype with a modular distributed topology is described. The system, still under development, has a distributed architecture, with modular characteristics, to operate with different battery pack topologies and charge capacities, integrating adaptive algorithms for functional state real time monitoring and management of multicellular Li-ion batteries, and is intended for application in the context of a local energy community fed by renewable energy sources.
  • Baterias de Ião-Lítio: Materiais, Componentes, Integração e Desafios
    Publication . Nogueira, Carlos; Gano, António; Rangel, C. M.
    RESUMO: O armazenamento eletroquímico de energia, através de baterias, constitui uma das tecnologias fundamentais para o armazenamento de energia, tanto nas redes elétricas com elevada penetração de fontes renováveis, como na mobilidade elétrica, com perspetivas de crescimento exponencial, destacando-se ainda a sua contribuição decisiva nos sistemas de armazenamento estacionário em comunidades de energia. Dos variados sistemas de baterias existentes no mercado, as baterias de ião lítio (LIB’s - Lithium-ion Batteries) ocupam atualmente o papel mais relevante.