Results 31 to 40 of about 6,999 (231)
Improved speed estimation in sensorless PM brushless AC drives [PDF]
, 2002 The application of flux-observer-based sensorless control to permanent-magnet brushless AC motor drives is described. Current methods of speed estimation are assessed, both theoretically and experimentally, and an improved method, which combines the best
Howe, D., Shen, J.X., Zhu, Z.Q.
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Novel Single Inverter-Controlled Brushless Wound Field Synchronous Machine Topology
Mathematics, 2021 This paper proposes a novel brushless excitation topology for a three-phase synchronous machine based on a customary current-controlled voltage source inverter (VSI).
Syed Sabir Hussain Bukhari +5 more
doaj +1 more source
EnergiesHybrid-excited generators have a wide voltage regulation capability or a wide range of variable-speed constant-voltage output capability, providing a significant advantage in the new energy power generation field.
Yonghong Xia +5 more
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Design Method for Variable Frequency Brushless Synchronous Generators
Energies, 2022 Brushless synchronous generators, which have the structure of three-stage generators to realize brushless excitation, are the most commonly used aero-generators.
Yongjie Wang +4 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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Modelling and Simulation in Engineering, 2012 A method of simulation and modeling outer rotor permanent magnet brushless DC (ORPMBLDC) motor under dynamic conditions using finite element method by FEMM 4.2 software package is presented.
Uma Devi Kumaravelu +1 more
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Brushless Field Excitation Scheme for Wound Field Synchronous Machines
Applied Sciences, 2020 A new harmonic field excitation technique for the brushless operation of wound field synchronous machines (WFSMs) is proposed in this paper. The proposed scheme involves conventional three-phase and single-phase inverters operating at different ...
Syed Sabir Hussain Bukhari +3 more
doaj +1 more source
Improved analytical model for predicting the magnetic field distribution in brushless permanent-magnet machines [PDF]
, 2002 A general analytical technique predicts the magnetic field distribution in brushless permanent magnet machines equipped with surface-mounted magnets. It accounts for the effects of both the magnets and the stator windings.
Chan, C.C., Howe, D., Zhu, Z.Q.
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Transport, 2005 This paper compares five different motor types used in variable speed drives: a dc motor with a mechanical commutator and with electromagnetic or permanent magnets excitation, a cage induction motor, asynchronous cascade with a slipâ€ring motor and a ...
Tadeusz Glinka +2 more
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Torque prediction using the flux-MMF diagram in AC, DC, and reluctance motors [PDF]
, 1996 This paper uses the flux-MMF diagram to compare and contrast the torque production mechanism in seven common types of electric motor. The flux-MMF diagram is a generalized version of the flux-linkage versus current (ψ-i) diagram for switched-reluctance ...
Deodhar, R.P. +3 more
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