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Electrical Engineering, 2019
This paper proposes an inverter scheme to generate an additional third-harmonic component alongside the fundamental component of the current. The generated third-harmonic component is used to achieve the brushless operation in a wound field synchronous machine (WFSM).
Muhammad Ayub +3 more
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This paper proposes an inverter scheme to generate an additional third-harmonic component alongside the fundamental component of the current. The generated third-harmonic component is used to achieve the brushless operation in a wound field synchronous machine (WFSM).
Muhammad Ayub +3 more
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Non-linear interactions of acoustic fields with plates under harmonic excitations
Journal of Sound and Vibration, 1978The method of renormalization is used to determine a uniformly valid expansion for the problem of non-linear interactions of acoustic fields with plates under harmonic excitations. The expansion obtained is in agreement with that obtained by Ginsberg, who used the method of strained co-ordinates to render the potential uniform and then used the method ...
Nayfeh, A. H., Kelly, S. G.
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Studies on the Vorticity Field of Harmonically Excited Bluff-Body Flames
46th AIAA Aerospace Sciences Meeting and Exhibit, 2008This paper describes an experimental study of the effect of acoustic excitation on bluff- body stabilized flames. The Kelvin-Helmholtz (KH) instability of the shear layer is excited due to the incident acoustics. In turn, the KH instability imposes a convecting, harmonic excitation on the flame, which leads to spatially periodic flame wrinkling and ...
Santosh Shanbhogue, Tim Lieuwen
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2019 IEEE Energy Conversion Congress and Exposition (ECCE), 2019
This paper describes a novel self-excitation technique in which space harmonics and carrier harmonic is effectively utilized for the field magnetization instead of permanent magnets. The unique point of this technique are the following points. The second-order space harmonic that is structurally unavoidably generated in the motor with concentrated ...
Masahiro Aoyama, Toshihiko Noguchi
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This paper describes a novel self-excitation technique in which space harmonics and carrier harmonic is effectively utilized for the field magnetization instead of permanent magnets. The unique point of this technique are the following points. The second-order space harmonic that is structurally unavoidably generated in the motor with concentrated ...
Masahiro Aoyama, Toshihiko Noguchi
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Excitation of non-harmonic fields in an electrodynamic system
The Fifth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (IEEE Cat. No.04EX828), 2004There is a universal approach to the spectra theoretical investigations of microwave tubes, which may be called spectral. This idea consists in simultaneous accounting for all temporal harmonics of the fields and the currents over a frequency continuum, taking into consideration their non-linear interaction, and obtaining frequency dependencies of the ...
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IEEE Transactions on Industrial Electronics, 2022
In this article, a novel parallel hybrid excitation field modulated machine with efficient utilization of multiworking harmonics is proposed. The key of the proposed machine is to efficiently integrate the parallel hybrid excitation and multiworking harmonics to enhance average output torque and flux regulation capability.
Tingting Jiang +3 more
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In this article, a novel parallel hybrid excitation field modulated machine with efficient utilization of multiworking harmonics is proposed. The key of the proposed machine is to efficiently integrate the parallel hybrid excitation and multiworking harmonics to enhance average output torque and flux regulation capability.
Tingting Jiang +3 more
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Theoretical analysis of novel wound-field synchronous motor self-excited by space harmonics
7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014This paper describes a theoretical analysis of a self-excited wound-field synchronous motor in which space harmonics power is utilized for field magnetization instead of permanent magnets. The operation principle of the proposed motor can be explicated by a voltage equation on the synchronous rotating reference frame.
M. Aoyama, T. Noguchi
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Novel Brushless Wound Rotor Synchronous Machine With Zero-Sequence Third-Harmonic Field Excitation
IEEE Transactions on Magnetics, 2016This paper introduces a novel topology for generating a spatial third-harmonic current component to excite the rotor field winding of a wound rotor synchronous machine to achieve brushless operation. In this topology, each of the three-phase windings on the stator is connected with a switch in parallel.
Ghulam Jawad +3 more
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Parametric excitation of a cavity field mode coupled to a harmonic oscillator detector
Journal of Physics A: Mathematical and Theoretical, 2013We study the parametric resonance in a system of two coupled quantum harmonic oscillators when the frequency of one of them (describing the field mode) is modulated at exactly twice the unperturbed eigenfrequency (the case of ‘unshifted resonance’).
A S M de Castro, V V Dodonov
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Brushless Wound Rotor Synchronous Machine With Third Harmonic Field Excitation Using Single Inverter
2018 IEEE International Magnetics Conference (INTERMAG), 2018The recent fluctuating prices of rare earth magnet used in PMSM has encouraged the researchers towards the other candidates, such as, PM-assisted synchronous reluctance machine (PMa-SyRM) and wound rotor synchronous machine (WRSM). Whereas, in WRSM, the assembly of brushes and slip rings connect the machine to its excitation system on the rotor side ...
M. Ayub, S. Bukhari, G. Sirewal, B. Kwon
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