Results 51 to 60 of about 13,218 (204)
IET Renewable Power Generation, 2023 The brushless doubly‐fed machine (BDFM) utilizes an asymmetric composite rotor featuring salient pole reluctance and magductance to effectively compensate for the phase shift in space, as well as enhance magnetic field modulation effects, and is ...
Dingbang Long +3 more
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Characterising brushless doubly fed machine rotors
IET Electric Power Applications, 2013 The brushless doubly fed machine (BDFM) is a robust alternative to the doubly fed induction generator, currently widely used in wind turbines but prone to brush‐gear and slip‐ring failure. The rotor winding plays an important part in a BDFM, coupling the two stator windings.
Richard McMahon +4 more
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Torque ripple minimisation in modular permanent magnet brushless machines [PDF]
IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03., 2003 This paper discusses the suitability of four-phase, five-phase, and six-phase modular machines, for use in applications where servo characteristics and fault tolerance are key requirements. It is shown that an optimum slot number and pole number combination exists, for which excellent servo characteristics could be achieved, under healthy operating ...
Atallah, K., Wang, J.B., Howe, D.
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Design and Optimization of a Brushless Wound-Rotor Vernier Machine
Energies, 2018 In this paper, a permanent magnet (PM)-less, brushless, wound-rotor vernier machine (BL-WRVM) is proposed for variable speed applications such as electric vehicles and washing machines.
Qasim Ali +3 more
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Influence of design parameters on cogging torque in permanent magnet machines [PDF]
, 2000 The influence of various design parameters on the cogging torque developed by permanent magnet machines is investigated. It is shown that the slot and pole number combination has a significant effect on the cogging torque, and influences the optimal ...
Howe, D., Zhu, Z.Q.
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Brushless Synchronous Machine With Dual-Frequency Inverter for High Torque and Low Ripple Operation
IEEE AccessIn this paper, a novel brushless synchronous machine topology is introduced with the integration of a double-frequency inverter system, which plays a pivotal role in generating a sub-harmonic magnetomotive force (MMF) that significantly enhances torque ...
Hafiz Mudassir Munir +3 more
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Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications
Energies, 2015 In this paper, by considering and establishing the relationship between the maximum operating speed and d-axis inductance, a new design and optimization method is proposed.
Weiwei Gu, Xiaoyong Zhu, Li Quan, Yi Du
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Analytical and numerical computation of air-gap magnetic fields in brushless motors with surface permanent magnets [PDF]
, 2000 This paper extends the theory of the air-gap magnetic field in permanent-magnet (PM) brushless motors. Scalar and vector potential solutions to the field equations are brought together to unify many of the important practical methods already in use.
Davies, J.H. +4 more
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Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines
IET Electric Power ApplicationsSynchronous machines are electric machines characterised by a rotating speed proportional to the AC supply and are independent of load. Traditional permanent magnet synchronous machines utilise rare earth minerals for rotor flux generation, posing ...
Ahsan Fayyaz +3 more
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Permanent Magnet Synchronous Machines
Energies, 2019 Interest in permanent magnet synchronous machines (PMSMs) is continuously increasing worldwide, especially with the increased use of renewable energy and electrification of transports.
Sandra Eriksson
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