Results 31 to 40 of about 984 (220)

Analysis of a Brushless Wound Rotor Synchronous Machine Employing a Stator Harmonic Winding

open access: yesIEEE Access, 2020
This study proposes a new topology for brushless operation of a wound rotor synchronous machine (WRSM) employing a stator harmonic winding. It is based on generating an additional six-pole magneto-motive force component without the use of an inverter. In
Ghulam Jawad Sirewal   +3 more
doaj   +1 more source

Design issues of an IPM motor for EPS [PDF]

open access: yes, 2011
In electric power steering (EPS), permanent magnet (PM) brushless ac (BLAC) motors offer distinct advantages over other electric motor types in terms torque smoothness, reliability and efficiency.
Shen, Jian-Xin   +4 more
core   +1 more source

Analytical and numerical computation of air-gap magnetic fields in brushless motors with surface permanent magnets [PDF]

open access: yes, 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.
McGilp, M.I.   +4 more
core   +1 more source

Electromagnetic Design and Flux Regulation Analysis of New Hybrid Excitation Generator for Electric Vehicle Range Extender

open access: yesJournal of Electrical and Computer Engineering, 2021
Aiming at the problem of uncontrollable magnetic field of permanent magnet generators, a new hybrid excitation generator (HEG) with parallel magnetic circuit is proposed.
Wenjing Hu   +5 more
doaj   +1 more source

Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation [PDF]

open access: yes, 2005
In a conventional permanent magnet (PM) machine, the air-gap flux produced by the PM is fixed. It is difficult to enhance the air-gap flux density due to limitations of the PM in a series-magnetic circuit.
Wiles, R.H.
core   +1 more source

A novel brushless de‐excitation system for synchronous generators using a buck chopper with a freewheeling discharge resistor

open access: yesIET Electric Power Applications, 2023
A new de‐excitation system for advanced brushless excitation based on a synchronous generator is presented. The proposed system uses a discharge resistor in series with a freewheeling diode of a buck chopper.
Gildas Martial Ngaleu   +4 more
doaj   +1 more source

Evaluation of different power electronic interfaces for control of a rotating brushless PM exciter

open access: yes, 2016
This paper investigates the performance of different power electronic interfaces for a rotating brushless permanent magnet exciter, designed for a synchronous generator test setup.
Abrahamsson, Johan,   +9 more
core   +2 more sources

Novel Double Mode Dual-Stator Wound Rotor Synchronous Machine for Variable Speed Applications

open access: yesWorld Electric Vehicle Journal, 2023
This paper offers a novel dual-mode double stator wound rotor synchronous machine for variable speed applications. The proposed motor integrates the benefits of both the traditional wound rotor synchronous machine (WRSM) and brushless wound rotor ...
Asif Hussain   +5 more
doaj   +1 more source

Performance Analysis of Brushless Wound Rotor Vernier Machine by Utilizing Third Harmonic Field Excitation

open access: yesIEEE Access, 2023
In this paper, a self-excited topology by utilizing third harmonic field excitation is proposed for realizing the brushless operation of the Wound Rotor Vernier Machine (WRVM).
Sheikh Yasir Hammad   +5 more
doaj   +1 more source

The use of cement leftovers from the hollow of spun piles as an additive in self-compacting concrete [PDF]

open access: yes, 2018
Spun piles have been used widely by developing countries, including Malaysia, to construct the foundation of most construction projects. A spun pile is a reinforced precast and prestressed concrete that is compacted in a mould through spinning compaction.
Galip, N S   +21 more
core   +1 more source

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