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.
Yonghong Xia +5 more
doaj +2 more sources
Application of square-wave inverter in excitation system for magnetic nanoparticle tomography
AIP Advances, 2022 To collect the signals of magnetic nanoparticles (MNPs) at a distance from a magnetic nanoparticle tomography, a strong ac magnetic field should be generated by applying a high current to the excitation coil.
Kohta Higashino +3 more
doaj +1 more source
Experimental Analysis of Transformer Core Vibration and Noise under Inter-Harmonic Excitation
Applied Sciences, 2022 With the wide application of power electronic devices and nonlinear loads, the resulting inter-harmonic pollution is becoming more and more serious in the power system.
Qiang He +5 more
doaj +1 more source
INTERPRETATION OF VIBRATION SIGNALS OF COMPLEX ROTOR SYSTEM BASED ON FRACTAL ANALYSIS
Авіаційно-космічна техніка та технологія, 2019 The work analyzes vibration signals obtained by simulating a turbine of a complex rotor system, for example, an aviation gas turbine engine, under conditions of stationary and non-stationary excitations. Four modes of vibration excitation are considered:
Надія Іванівна Бурау +1 more
doaj +1 more source
Non-Uniform Time Sampling for Multiple-Frequency Harmonic Balance Computations [PDF]
, 2013 A time-domain harmonic balance method for the analysis of almost-periodic (multi-harmonics) flows is presented. This method relies on Fourier analysis to derive an efficient alternative to classical time marching schemes for such flows.
Dufour, Guillaume +5 more
core +1 more source
Label-free 3D visualization of cellular and tissue structures in intact muscle with second and third harmonic generation microscopy. [PDF]
, 2011 Second and Third Harmonic Generation (SHG and THG) microscopy is based on optical effects which are induced by specific inherent physical properties of a specimen.
Krombach Fritz +11 more
core +2 more sources
Fast-individual-harmonic-extraction technique [PDF]
, 2005 One outcome of a PhD project (C H Ng, University studentship) A collaborative work (the Energy Systems Group, Northumbria and Durham University). It deals with the problem of harmonic suppression or elimination in power systems for safety and power ...
Busawon, Krishna +3 more
core +1 more source
VIBRATION TRANSMISSIBILITY OF THE COFFEE FRUIT-PEDUNCLE SYSTEM: A FORCED VIBRATION STUDY OF HIGH FREQUENCY AIMING MECHANICAL HARVESTING [PDF]
Engenharia Agrícola, 2023 Semi-mechanized and mechanized harvesting use machines that promote the transference of vibrational energy and impact to achieve the detachment of coffee fruits.
Geice P. Villibor +4 more
doaj +1 more source
Second harmonic generation confocal microscopy of collagen type I from rat tendon cryosections [PDF]
, 2006 We performed second harmonic generation (SHG) imaging of collagen in rat-tendon cryosections, using femtosecond laser scanning confocal microscopy, both in backscattering and transmission geometries.
Theodossiou, Theodossis A. +11 more
core +1 more source
Fault-Tolerant Operation of Wound Field Synchronous Machine Using Coil Switching
IEEE Access, 2019 This paper proposes a fault tolerant operation of a wound field synchronous machine (WFSM) under the loss of excitation (LOE) fault in the rotor field winding. A two-mode field excitation scheme is presented, where the rotor of the WFSM was modified, and
Muhammad Ayub +3 more
doaj +1 more source