Results 21 to 30 of about 3,455 (300)
Harmonic Transfers for Quantifying Propagation of Harmonics in Wind Power Plants [PDF]
Energies, 2021 In this paper, primary and secondary emissions in wind power plants are studied by using transfer admittance and current transfer functions between turbines and the public grid. The use of such transfer functions allows harmonic propagation studies without knowledge of the emission from individual turbines or the background voltage distortion.
Daphne Schwanz +3 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
doaj +1 more source
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
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Energies, 2021 This paper presents a new high-efficient three-phase brushless wound rotor synchronous machine (BL-WRSM) based on a sub-harmonic field excitation technique. In the proposed machine topology, the stator is equipped with two different three-phase windings:
Syed Sabir Hussain Bukhari +3 more
doaj +1 more source
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
doaj +1 more source
IEEE 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
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Theory of symmetric winding distributions and a general method for winding MMF harmonic analysis [PDF]
, 2021 One of the main challenges in motor design is the winding layout, including winding distributions and magnetomotive force (MMF) harmonic analysis. Considering some shortcomings in the existing theories for winding distributions and difficulties in ...
Lin, Yingqian +4 more
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Harmonics in a wind power plant [PDF]
2015 IEEE Power & Energy Society General Meeting, 2015 Wind power generation has been growing at a very fast pace for the past decade, and its influence and impact on the electric power grid is significant. As in a conventional power plant, a wind power plant (WPP) must ensure that the quality of the power being delivered to the grid is excellent.
V. Preciado +3 more
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Harmonic Measure and Winding of Conformally Invariant Curves [PDF]
Physical Review Letters, 2002 The exact joint multifractal distribution for the scaling and winding of the electrostatic potential lines near any conformally invariant scaling curve is derived in two dimensions. Its spectrum f(alpha,lambda) gives the Hausdorff dimension of the points where the potential scales with distance $r$ as $H \sim r^α$ while the curve logarithmically ...
Duplantier, Bertrand, Binder, Ilia A.
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Energies, 2020 In an open-winding machine, three-phase stator currents can be controlled such that the input armature currents may contain the third-harmonic current component in addition to the fundamental.
Syed Sabir Hussain Bukhari +3 more
doaj +1 more source