Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Paulo J. Costa Branco"'
Publikováno v:
Actuators, Vol 13, Iss 6, p 196 (2024)
This paper analyzes the viability of different solutions to passively augment the axial stiffness of a horizontal axis radial levitation passive magnetic bearing (PMB) with a previously studied topology. The zero-field cooling (ZFC) of high-temperatu
Externí odkaz:
https://doaj.org/article/022bc841ef3447a99f44c74c2639e5ae
Autor:
Helena M. Ramos, Modesto Pérez-Sánchez, Prajwal S. M. Guruprasad, Armando Carravetta, Alban Kuriqi, Oscar E. Coronado-Hernández, João F. P. Fernandes, Paulo J. Costa Branco, Petra Amparo López-Jiménez
Publikováno v:
Water, Vol 16, Iss 3, p 504 (2024)
The world’s water infrastructures suffer from inefficiencies, such as high energy consumption and water losses due to inadequate management practices and feeble pressure regulation, leading to frequent water and energy losses. This strains vital wa
Externí odkaz:
https://doaj.org/article/d0a113b6892c48aeab9ceb573186806d
Autor:
António J. Arsénio Costa, João F. P. Fernandes, Rui Melicio, Carlos Cardeira, Paulo J. Costa Branco
Publikováno v:
Crystals, Vol 13, Iss 3, p 532 (2023)
This article presents results from a simple experimental methodology used to determine the amount of heat transferred from an yttrium barium copper oxide (YBCO) bulk to liquid nitrogen (LN2) and LN2 consumption during the process of zero-field coolin
Externí odkaz:
https://doaj.org/article/8fd25fc485ab4a0c8fb19043ae424b46
Publikováno v:
Energies, Vol 15, Iss 13, p 4697 (2022)
Several review studies exist in the literature about monitoring, fault detection, and diagnosis of power transformers. However, they are general approaches in terms of power transformers. Some only focus on applying a specific class of techniques, bu
Externí odkaz:
https://doaj.org/article/71bf69db76f54c7da0b10460623a6da4
Publikováno v:
Actuators, Vol 10, Iss 12, p 311 (2021)
This document presents a study on the optimization of the 3D geometry of a horizontal axis radial levitation bearing with zero-field cooled (ZFC) high-temperature superconductor (HTS) bulks in the stator, and radially magnetized permanent magnet (PM)
Externí odkaz:
https://doaj.org/article/002c40b3f64a4f5aa90533f38ad966de
Autor:
Luís Oscar A. P. Henriques, Luís Guilherme B. Rolim, Walter I. Suemitsu, Paulo J. Costa Branco
Publikováno v:
Eletrônica de Potência, Vol 8, Iss 1, Pp 16-24 (2003)
Neste artigo é apresentada uma revisão das técnicas mais importantes para a redução de oscilações de conjugado no motor de relutância chaveado. Propõese também uma nova técnica para a minimização das ondulações de conjugado, baseada em
Externí odkaz:
https://doaj.org/article/4e2e294a935d411ba610b1dc207f977a
Autor:
Inês S. P. Peixoto, F. Ferreira da Silva, João F. P. Fernandes, Silvio Vaschetto, Paulo J. Costa Branco
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-10
Autor:
Eduardo Abdon Sarquis Filho, Björn Müller, Nicolas Holland, Christian Reise, Klaus Kiefer, Bernd Kollosch, Paulo J. Costa Branco
Publikováno v:
Solar Energy. 244:227-241
Automatic fault detection (AFD) is a key technology to optimize the Operation and Maintenance of photovoltaic (PV) systems portfolios. A very common approach to detect faults in PV systems is based on the comparison between measured and simulated per
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-10
Electromagnetic heating of high-temperature superconductors (HTSs) and non-perfect thermal insulation of cryostats cause liquid nitrogen (LN2) vaporization and consumption. This paper presents results from the thermo-hydraulic analysis of the maximum
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-6
This work focuses on implementing HTS bulks in the excitation circuit of low-speed synchronous generators as permanent magnets. In addition to the implementation study, it is also addressed to remagnetize HTS bulks in electric generators. To reduce t