Results 131 to 140 of about 3,268 (187)
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The brushless excitation system
Electrical Engineering, 1960A NEW TYPE of excitation system has been developed for use in the electric utility industry in which the generator collector and collector brushes, and the exciter commutator and commutator brushes are eliminated. The basic difference between this system and its predecessors is an a-c exciter mounted on the same shaft as the generator field.
R. W. Ferguson, R. Herbst, R. W. Miller
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Rotor for a brushless micromotor
Journal of Magnetism and Magnetic Materials, 2002Abstract Synchronous planar micromotors are studied at LEG, with diameters ranging from φ 3 to φ 8 mm. They combine state-of-the-art collective means of fabrication with watch industry techniques. This paper describes the design, simulation, fabrication and magnetisation of disc-shaped SmCo rotors with several axial pairs of poles.
P.-A. Gilles, J. Delamare, O. Cugat
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1990
Abstract Rapid progress in power electronics, microelectronics, and modern control technology during the past three decades has made possible the use of brushless servomotors in motion control. This application can provide high productivity and improved product quality on the production line and in manufacturing systems and is the ...
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Abstract Rapid progress in power electronics, microelectronics, and modern control technology during the past three decades has made possible the use of brushless servomotors in motion control. This application can provide high productivity and improved product quality on the production line and in manufacturing systems and is the ...
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Brushless Superconducting Generator.
1982Abstract : This report covers work on a flux pump excited brushless superconducting alternator. The flux pump, used to provide the excitation current of the field coils incorporates several features of a machine studied theoretically and reported in an earlier paper.
Altan M. Ferendeci, O. K. Mawardi
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Permanent-magnet motors for brushless operation
IEEE Transactions on Industry Applications, 1990The design considerations for permanent-magnet motors intended for brushless operation are discussed. Two rotor configurations are described: the imbricated rotor and the segmented rotor. The segmented rotor is designed specially for high-speed operation.
Low, Teck-Seng +2 more
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2003
Brushless DC (BLDC) motors, also called permanent magnet synchronous motors, are used in direct-drive applications mainly due to their large torque producing capability. Compared to conventional DC motors, they have no brushes or mechanical commutators, which eliminates the problems due to mechanical wear of the moving parts [68, 74].
Farshad Khorrami +2 more
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Brushless DC (BLDC) motors, also called permanent magnet synchronous motors, are used in direct-drive applications mainly due to their large torque producing capability. Compared to conventional DC motors, they have no brushes or mechanical commutators, which eliminates the problems due to mechanical wear of the moving parts [68, 74].
Farshad Khorrami +2 more
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Quadratic programming in control of brushless motors
Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164), 2002A new torque control strategy for brushless motors with minimum torque ripple and minimum copper losses while maintaining the phase currents under magnetic (or current) saturation is presented. The optimal control, a nonlinear map from desired torque and position to the motor's phase currents, is the closed form solution to a quadratic programming ...
Farhad Aghili +2 more
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1993
The authors design a variable reluctance motor to perform the rotation of clawed-pole rotors. Starting from this singular problem and encouraged by the good practical results they obtained, they have investigated the structure in terms of motor performances for application in variable speed drives.
C. ATTAIANESE +3 more
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The authors design a variable reluctance motor to perform the rotation of clawed-pole rotors. Starting from this singular problem and encouraged by the good practical results they obtained, they have investigated the structure in terms of motor performances for application in variable speed drives.
C. ATTAIANESE +3 more
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SAE Technical Paper Series, 1998
<div class="htmlview paragraph">A new, enclosed brushless alternator is developed for use in either hazardous or contaminated environments which can produce 50 Amps at 28 Volts DC. The fully enclosed design of this alternator allows it to work in environments which contain corrosive agents, metallic particulates, or volatile media.
Majid Naghshineh, James Becker
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<div class="htmlview paragraph">A new, enclosed brushless alternator is developed for use in either hazardous or contaminated environments which can produce 50 Amps at 28 Volts DC. The fully enclosed design of this alternator allows it to work in environments which contain corrosive agents, metallic particulates, or volatile media.
Majid Naghshineh, James Becker
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IEE Proceedings - Generation, Transmission and Distribution, 1994
The IEEE model of a brushless exciter can be found in many software packages for the simulation of power system behaviour. Yet the model is simplistic and does not represent the exciter alternator accurately. This paper describes the reasons for the inaccuracy of the IEEE representation and proposes an alternative model.
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The IEEE model of a brushless exciter can be found in many software packages for the simulation of power system behaviour. Yet the model is simplistic and does not represent the exciter alternator accurately. This paper describes the reasons for the inaccuracy of the IEEE representation and proposes an alternative model.
openaire +1 more source