ProfileOfResearchers

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TITLE: Novel pulsed switched power supply for a fast field cycling NMR spectrometer Full Text
AUTHORS: Sousa, DM ; Fernandes, PAL; Marques, GD ; Ribeiro, AC ; Sebastiao, PJ ;
PUBLISHED: 2004, SOURCE: 31st Congress Ampere Magnetic Resonance and Related Phenomena in SOLID STATE NUCLEAR MAGNETIC RESONANCE, VOLUME: 25, ISSUE: 1-3

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TITLE: New isolated gate bipolar transistor two-quadrant chopper power supply for a fast field cycling nuclear magnetic resonance spectrometer Full Text
AUTHORS: Sousa, DM ; Marques, GD ; Sebastiao, PJ ; Ribeiro, AC ;
PUBLISHED: 2003, SOURCE: REVIEW OF SCIENTIFIC INSTRUMENTS, VOLUME: 74, ISSUE: 10

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TITLE: Space-vector alpha-beta modulator and sliding mode control of the three-phase buck type rectifier with freewheeling diode
AUTHORS: Pires, VF ; Silva, JF ; Marques, GD ;
PUBLISHED: 2002, SOURCE: 28th Annual Conference of the IEEE Industrial-Electronics-Society in IECON-2002: PROCEEDINGS OF THE 2002 28TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-4, VOLUME: 1

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TITLE: Virtual-flux-based direct power control of three-phase PWM rectifiers
AUTHORS: Malinowski, M; Kazmierkowski, MP; Hansen, S; Blaabjerg, F; Marques, GD ;
PUBLISHED: 2001, SOURCE: Annual Meeting of the Industry-Applications-Society in IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOLUME: 37, ISSUE: 4

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TITLE: A simple slip-power recovery system with a DC voltage intermediate circuit and reduced harmonics on the mains Full Text
AUTHORS: Marques, GD ; Verdelho, P;
PUBLISHED: 2000, SOURCE: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOLUME: 47, ISSUE: 1

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TITLE: A simplified stator flux vector control method in dq co-ordinates for induction machines
AUTHORS: Monteiro, J; Marques, GD ; Palma, J;
PUBLISHED: 2000, SOURCE: IEEE International Symposium on Industrial Electronics (ISIE 2000) in PROCEEDINGS OF THE 2000 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, VOL 1 AND 2, VOLUME: 1

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TITLE: An instantaneous active and reactive current component method for active filters
AUTHORS: Soares, V; Verdelho, P; Marques, GD ;
PUBLISHED: 2000, SOURCE: IEEE TRANSACTIONS ON POWER ELECTRONICS, VOLUME: 15, ISSUE: 4

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TITLE: Coil by coil optimization algorithm for the design of a nuclear magnetic resonance fast field cycling air cored magnet
AUTHORS: Sousa, DM ; Marques, GD ;
PUBLISHED: 2000, SOURCE: 2000 IEEE International Magnetics Conference-2000 IEEE INTERMAG in Digests of the Intermag Conference

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TITLE: Detection of reference currents for active filters using the Darrieus definition of reactive power
AUTHORS: Marques, GD ;
PUBLISHED: 2000, SOURCE: IEEE International Symposium on Industrial Electronics (ISIE 2000) in PROCEEDINGS OF THE 2000 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, VOL 1 AND 2, VOLUME: 1

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