Results 1 to 10 of about 2,858 (248)
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). The proposed topology consists of two windings housed inside the stator periphery connected in series with the three-phase diode rectifier.
Junaid Ikram +2 more
exaly +5 more sources
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) based on inherent third harmonic field induction is proposed in this paper.
Yonghong Xia, Huiyu Huang
exaly +4 more sources
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 +2 more
exaly +4 more sources
High-efficient brushless wound rotor synchronous machine topology based on sub-harmonic field-excitation technique [PDF]
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:
Bukhari, Syed Sabir Hussain +3 more
core +4 more sources
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 ...
Jong-Suk Ro +3 more
core +2 more sources
Influence of design parameters on the field current of the tooth harmonic excitation system
IET Electric Power Applications, 2020 This study proposes a brushless hybrid excitation permanent magnet synchronous generator (HEPMSG) with rotor tooth harmonic winding. The rotor tooth harmonic electromotive force (EMF), induced by the inherent tooth harmonic magnetic field in the air gap, will provide the field current for the rotor field winding after the rectification.
Yonghong Xia, Jingming Zhang
exaly +2 more sources
Excitation of higher harmonic gratings in AC-field biased photorefractive crystals
Optics Communications, 1998 We analyze the nonlinear excitation of holographic gratings in a photorefractive crystal being subject to an alternating electric field and a stationary light interference pattern. The influence of the higher harmonics on the fundamental grating is illustrated for the case where a crystal of Bi12SiO20 is the recording medium. We analyze both the steady
Henrik C. Pedersen +3 more
openaire +2 more sources
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.
Yeguo Yu +5 more
core +2 more sources
Excitation of second harmonic terahertz surface magnetoplasmons over a rippled surface of n-InSb
Results in Optics, 2023 We analyzed the excitation of second harmonic (SH) terahertz (THz) surface magnetoplasmons (SMPs) over a n-type semiconductor (n-InSb)-free space interface.
A. Panwar, Rohit Kumar Srivastav
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Empirical Expression for AC Magnetization Harmonics of Magnetic Nanoparticles under High-Frequency Excitation Field for Thermometry [PDF]
Nanomaterials, 2020 The Fokker–Planck equation accurately describes AC magnetization dynamics of magnetic nanoparticles (MNPs). However, the model for describing AC magnetization dynamics of MNPs based on Fokker-Planck equation is very complicated and the numerical calculation of Fokker-Planck function is time consuming.
Zhongzhou Du +5 more
openaire +4 more sources