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Pina, João, C. Caracaleanu, A. Gonçalves, Pedro Pereira, S. Valtchev, Mário Neves, and A. Rodrigues. "High Performance, Environment Friendly, Modular and Fault Tolerant Renewable Energy Microgrid." 12th International Energy Conference & Exhibition (ENERGEX2007). 2007. Abstract
Pina, João, Mário Neves, Alfredo Álvarez, and Amadeu Rodrigues. "High Temperature Superconducting Fault Current Limiters as Enabling Technology in Electrical Grids with Increased Distributed Generation Penetration." Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10. 2010. 427-434. Abstract

Amongst applications of high temperature superconductors, fault current limiters are foreseen as one of the most promising in power systems. Several topologies have been developed in the last years, taking advantage of different superconductors? properties. Increasing distributed generation (DG) penetration, based on renewable energy, adds new short-circuit sources to electrical grids, which brings several energy quality and protection issues. Superconducting fault current limiters can obviate these problems, representing thus an enabling technology for DG penetration. In this paper current limiter topologies are presented, its operations principles, strengths and weaknesses, in the context of these DG grids. In the end, future trends are discussed.

Josué, João Gil, João Pina, and Mário Neves. "Home Electric Energy Monitoring System: Design and Prototyping." Technological Innovation for Sustainability. Vol. 349. IFIP Advances in Information and Communication Technology, 349. 2011. 437-444. Abstract

The energy resource management is a major concern worldwide. Energy management activities minimize environmental impacts of the energy production. Therefore, electric energy consumption monitoring has been proposed as an important process which makes immediate reductions in energy use and CO(2) emissions. In recent years, advances in electronics have allowed the implementation of many technological solutions that could help to reduce energy consumption. This paper describes the design and prototyping of a home electric energy monitoring system that provides residential consumers with real time information about their electricity use. The system uses wireless communication and displays the information on a small LCD screen and on a computer.