Results 261 to 270 of about 23,533 (297)
Some of the next articles are maybe not open access.
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
openaire +1 more source
Stray-field loss and flux distribution inside magnetic steel plate under harmonic excitation
COMPEL - the International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2017 Purpose This paper aims to investigate an efficient approach to model the electromagnetic behaviors and predict stray-field loss inside the magnetic steel plate under 3D harmonic magnetization conditions so as to effectively prevent the structural ...
Xiaojun Zhao +2 more
exaly +2 more sources
The theory of the harmonically resonant cavity with a self-excited multiple frequency field
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991Abstract Usually a harmonically resonant cavity is excited by two different wavelength microwave power sources [C.E. Hess, H.A. Schwettman and T.I. Smith, IEEE Trans. Nucl. Sci. NS-32 (1985) 2924]. According to the theory of interaction of the beam with the cavity [P.B. Wilson, AIP Conf. Proc. no.
Zhao Zhentang +3 more
openaire +1 more source
Brushless wound rotor synchronous machine with third-harmonic field excitation
Electrical Engineering, 2019This manuscript discusses a novel harmonic current excitation technique for a wound rotor synchronous machine based on control of the time harmonic magneto-motive force (MMF) for brushless operation. Two inverters are used to feed the armature winding in such a way that at a time, one inverter supplies the current to armature winding. The two inverters
Muhammad Ayub +3 more
openaire +1 more source
Analysis of Air-Gap Field Modulation in Parallel-Hybrid-Excited Harmonic-Shift Machines
IEEE Transactions on Magnetics, 2021In this article, the parallel-hybrid-excited harmonic-shift machine (PHE-HSM) is analyzed from the perspective of the field-modulation effect based on the air-gap field harmonics. By shifting the pole-pairs of the dc-field windings from those of the permanent magnets (PMs), the parallel-hybrid excitation can be realized due to field modulation.
Libing Cao +4 more
openaire +2 more sources
Technical Physics, 2001
The nonlinear interaction of waves in a periodic structure placed into a magnetic field is considered. The structure is comprised of alternate semiconducting and insulating layers. The three-wave interaction technique is applied to studying the nonlinear processes.
A. A. Bulgakov, O. V. Shramkova
openaire +1 more source
The nonlinear interaction of waves in a periodic structure placed into a magnetic field is considered. The structure is comprised of alternate semiconducting and insulating layers. The three-wave interaction technique is applied to studying the nonlinear processes.
A. A. Bulgakov, O. V. Shramkova
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Discrete Excitation Spectrum of a Classical Harmonic Oscillator in Zero-Point Radiation
Foundations of Physics, 2015 We report that upon excitation by a single pulse, a classical harmonic oscillator immersed in the classical electromagnetic zero-point radiation exhibits a discrete harmonic spectrum in agreement with that of its quantum counterpart.
Wayne Cheng-Wei Huang, Herman Batelaan
exaly +2 more sources
Second Harmonic Excitation of Acetylene by the Optical Near Field Generated in a Porous Material
The Journal of Physical Chemistry C, 2017We perform first-principles calculations of the photoexcitation dynamics of an acetylene molecule in a metal organic framework, IRMOF-10. Resonant laser excitation of the IRMOF-10 generates an optical near field (ONF) around the two benzene rings that comprise the main framework of the IRMOF-10.
Masashi Noda +2 more
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source