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A.T. de Almeida
Researcher at University of Coimbra
Publications - 100
Citations - 2119
A.T. de Almeida is an academic researcher from University of Coimbra. The author has contributed to research in topics: Mobile robot & Robot. The author has an hindex of 24, co-authored 100 publications receiving 1928 citations.
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Journal ArticleDOI
An Energy-Stored Quasi-Z-Source Inverter for Application to Photovoltaic Power System
Baoming Ge,Haitham Abu-Rub,Fang Zheng Peng,Qin Lei,A.T. de Almeida,Fernando J. T. E. Ferreira,Dongsen Sun,Yushan Liu +7 more
TL;DR: Two strategies are proposed with the related design principles to control the new energy-stored qZSI when applied to the PV power system and prove the effectiveness of the proposed control of the inverter's input and output powers and battery power regardless of the charging or discharging situation.
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Technical and economical considerations in the application of variable speed drives with electric motor systems
TL;DR: In this article, a characterization of the current market of VSDs is presented, including the average prices, the installation costs, and the total sales in each EU country, per power range.
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An equivalent instantaneous inductance-based technique for discrimination between inrush current and internal faults in power transformers
TL;DR: In this paper, a novel equivalent instantaneous inductance (EII)-based scheme is proposed to distinguish the inrush current from internal faults in power transformers, which is derived from the inherent difference of the magnetic permeability, due to the saturation and unsaturation, in the transformer iron core between the INR current and an internal fault.
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Ecoanalysis of Variable-Speed Drives for Flow Regulation in Pumping Systems
TL;DR: The identified large environmental benefits on top of the energy savings provide a strong argument for an increased use of VSDs, and a European standard methodology for the ecodesign analysis of energy-using products is used in this paper.
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Design of Transverse Flux Linear Switched Reluctance Motor
TL;DR: A transverse flux linear switched reluctance motor in which 12 primary-side poles, each composed of four sectors, boost efficiency over the whole operating range is developed, enhancing the robustness of the system by providing fault tolerance.