Results 161 to 170 of about 13,218 (204)
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Overview of Stator-Permanent Magnet Brushless Machines
IEEE Transactions on Industrial Electronics, 2011Permanent magnet (PM) brushless machines having magnets and windings in stator (the so-called stator-PM machines) have attracted more and more attention in the past decade due to its definite advantages of robust structure, high power density, high efficiency, etc.
Ming Cheng +3 more
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Advanced Flux-Switching Permanent Magnet Brushless Machines
IEEE Transactions on Magnetics, 2010This paper overviews the recent development and new topologies of flux-switching (FS) machines, with particularly emphasis on the permanent magnet (PM) type. Specific design issues, including winding configurations, combinations of stator and rotor pole numbers, rotor pole width, split ratio, etc., are investigated, while the torque capability of ...
Z. Q. Zhu, J. T. Chen
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Brushless machine monitoring and simulation
IECEC 96. Proceedings of the 31st Intersociety Energy Conversion Engineering Conference, 2002In high-power applications, typically serviced by hydraulic devices, electromechanical actuators promise improved reliability, performance, controllability, and efficiency. Brushless machine technology is ideally suited for EMA applications. In this paper, a simulation model for the brushless machine is developed and validated.
T.A. Haskew +3 more
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Simulation of the brushless DC machine
Proceedings of the Twenty-Seventh Southeastern Symposium on System Theory, 2002Research efforts on the brushless DC machine (BDCM) have produced a computer simulation model of the machine applicable for analysis of the machine during fault conditions. Several failure modes have been studied using this simulation technique. Modeling the motor during flux weakening, bearing failure, armature winding open circuiting, and armature ...
T. Salem, T.A. Haskew
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Brushless stator-controlled synchronous-induction machine
Proceedings of the Institution of Electrical Engineers, 1973It is well known that an induction motor will tend to run at half its normal speed when rotor asymmetry exists in two axes electrically at right angles. Several disadvantages are associated with this mode of operation as compared with a conventional machine wound with twice the number of poles.
A.R.W. Broadway, S.C.F. Tan
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Control of an unconventional rotary-linear brushless machine
2004 IEEE International Symposium on Industrial Electronics, 2004Electrical drives employing motors able to directly manage multiple degrees of freedom may result of relevant interest in several application fields, e.g. robotics and tooling machines. This paper recalls first the features of a rotary-linear brushless machine recently introduced, highlighting the ideal possibility to achieve a decoupled force/torque ...
BOLOGNESI, PAOLO +2 more
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A New Flux-Mnemonic Dual-Magnet Brushless Machine
IEEE Transactions on Magnetics, 2011This paper presents a new flux-mnemonic dual-magnet brushless machine which incorporates both the neodymium-iron-boron (NdFeB) and aluminum-nickel-cobalt (AlNiCo) permanent magnets (PMs) for hybrid excitation. By applying a temporary current pulse in a small magnetizing winding to online tune the magnetization of AlNiCo PMs, the proposed machine can ...
Li, W +4 more
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FeNdB for Slotless, Brushless D.C. Machines
1989Once a decision has been made, more or less intuitively, one can be happy if the intuition is verified in the course of time. When starting in the CEAM-project, we were looking for a possible innovation to be realized by using FeNdB-magnets. The basic idea was not to start with known d.c. motors designed optimally for e.g.
I. Kitzmann, K. R. Schulz
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Brushless doubly-fed reluctance machine rotor design
2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012This paper investigates the rotor design factors that impact the performance of brushless doubly-fed reluctance machines (BDFRMs). The performance of the BDFRM relies on the ability of the rotor structure to modulate stator magnetic fields so that magnetic coupling occurs between stator windings that do not otherwise interact.
Andrew M. Knight +3 more
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Brushless excitation systems for synchronous machines
Electronics and Power, 1975This article gives a simple approach to the various commonly used systems of brushless excitation for synchronous machines. The systems described have been designed for medium and large-size motors and generators of the salient-pole type operating at 50 or 60 ...
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