Results 1 to 10 of about 448 (163)
Use of Discharge Resistor to Improve Transient De-Excitation in Brushless Synchronous Machines
Energies, 2019 The discharge resistor is only used in case of electrical trip to reduce the field current as fast as possible and to minimize the damages produced by the short-circuit current supplied by the synchronous machine. The connection of the discharge resistor
Emilio Rebollo +3 more
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Energies, 2020 Aiming at the problems of large excitation loss and low power generation efficiency of silicon rectifier generators and the unstable output voltage of permanent magnet (PM) generators, a hybrid excitation generator (HEG) with suspended brushless claw ...
Huihui Geng +8 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
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Modelling the brushless excitation system for a synchronous machine
IET Electric Power Applications, 2009 The structure and the operation of the model for the brushless excitation system for a synchronous machine are presented. The nonlinear model including the excitation machine, the AC-AC converter supplying the excitation machine and the rectifier diode bridge, mounted on the rotor, is based on a state machine.
V. Ruuskanen +4 more
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IEEE Access, 2022 It is well known that the air-gap magnetic field of the permanent magnet synchronous generator (PMSG) is difficult to adjust. To overcome this challenge while maintaining the brushless feature of PMSGs, a hybrid excitation synchronous generator (HESG ...
Yonghong Xia +4 more
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Mathematics, 2023 This paper presents a topology for the brushless operation of a wound-rotor synchronous machine based on the subharmonic excitation technique by using two sets of multi-pole windings on the armature as well as on the rotor.
Muhammad Humza +3 more
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High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology
Mathematics, 2021 This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency.
Syed Sabir Hussain Bukhari +4 more
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A Novel Sub-Harmonic Synchronous Machine Using Three-Layer Winding Topology
World Electric Vehicle Journal, 2022 This paper proposes a novel brushless synchronous machine topology that utilizes stator sub-harmonic magnetomotive force (MMF) for desirable brushless operation.
S M Sajjad Hossain Rafin +2 more
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Simulation Model of Brushless Excitation System [PDF]
Journal of Applied Sciences, 2007 Excitation system is key element in the dynamic performance of electric power systems, accurate excitation models are of great importance in simulating and investigating the power system transient phenomena. Parameter identification of the Brushless excitation system was presented.
Ahmed N. Abdalla, Afaneen Anwar
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Design and Analysis of Single Inverter-Fed Brushless Wound Rotor Vernier Machine
IEEE Access, 2022 In this paper, a brushless wound rotor vernier machine (Bl-WRVM) with a single inverter configuration is proposed to achieve the brushless operation.
Sara Tariq +5 more
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