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104 results on '"Sousa, Duarte M."'

2. Digital Control of an FFC NMR Relaxometer Power Supply

Author

Lopes, Rúben J. A., Sebastião, Pedro J., Sousa, Duarte M., Roque, António, Margato, Elmano, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Zamboni, Walter, editor, and Petrone, Giovanni, editor

Published
2020
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4. Scalar Variable Speed Motor Control for Traction Systems with Torque and Field Orientation Filter

Author

Mendonça, Paulo, Sousa, Duarte M., Rannenberg, Kai, Editor-in-chief, Sakarovitch, Jacques, Series editor, Goedicke, Michael, Series editor, Tatnall, Arthur, Series editor, Neuhold, Erich J., Series editor, Pras, Aiko, Series editor, Tröltzsch, Fredi, Series editor, Pries-Heje, Jan, Series editor, Whitehouse, Diane, Series editor, Reis, Ricardo, Series editor, Murayama, Yuko, Series editor, Furbach, Ulrich, Series editor, Gulliksen, Jan, Series editor, Rauterberg, Matthias, Series editor, Camarinha-Matos, Luis M., editor, Falcão, António J., editor, Vafaei, Nazanin, editor, and Najdi, Shirin, editor

Published
2016
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12. Comparing the power losses of power supplies for fast-field cycling nuclear magnetic resonance equipment

Author

Lima, Marco, Pereira, Bruno, Sousa, Duarte M., Roque, António, and Margato, Elmano

Subjects
Power supply, Fast-Field Cycling, Power losses, DC-DC conversion
Abstract

Trabalho apresentado na ICMEPE, 2016 (International Conference on Modern Electrical Power Engineering), 6-8 julho de 2016, Las Palmas, Gran Canaria, Spain The main feature of the Fast-Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) power supplies is to drive a controlled current fulfilling the requirements of this technique. This feature allows fast switching the current of the FFC magnet and performing accurate and repetitive current cycles. When designing this equipment the power losses is not a fundamental parameter of the optimization process but are estimated in order to validate the topology of the final solution giving that the efficiency of the power solution influences the power consumption, and therefore the operational costs, which should be minimized. Under this context, from the power efficiency viewpoint, the power losses of two possible solutions are compared and discussed in this paper. Typical FFC current cycles are used as reference in order to balance the pros and cons of both solutions. N/A

Published
2016

15. Digital Control of a FFC NMR relaxometer

Author

Lopes, R., Sebastião, Pedro, Sousa, Duarte M., Roque, António, and Cascais, J. M.

Abstract

Trabalho apresentado em 9th Conference on FFC NMR Relaxometry, July 2015, Aberdeen, UK. N/A

Published
2015

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