Results 1 to 10 of about 48,127 (315)
High-frequency harmonics suppression in high-speed railway through magnetic integrated LLCL filter [PDF]
PLoS ONEMaged Al-Barashi +2 more
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Simulation research on high-speed motor current harmonic elimination methods [PDF]
MATEC Web of Conferences, 2022 A large number of harmonics will be generated in the process of transforming high frequency and high voltage alternating current (AC) into a constant frequency and constant voltage through a power conversion system when the high-speed motor is used as a ...
Cui Hong, Gao Youqing
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Energies, 2022 High-order harmonics in the traction power supply show negative effects on the safe and stable operation of the railway transportation system. There is a fixed resonant frequency in the traction network.
Miaoxin Jin +5 more
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High-frequency harmonic imaging of the eye [PDF]
SPIE Proceedings, 2005 PURPOSE: Harmonic imaging has become a well-established technique for ultrasonic imaging at fundamental frequencies of 10 MHz or less. Ophthalmology has benefited from the use of fundamentals of 20 MHz to 50 MHz. Our aim was to explore the ability to generate harmonics for this frequency range, and to generate harmonic images of the eye.
Ronald H, Silverman +3 more
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Micromachines, 2022 This paper presents an extensive experimental investigation to identify the influence of signal parameters on a piezoelectric harvester’s performance. A macro-fibre composite energy harvester was studied as an advanced, flexible, high-performance energy ...
Majid Khazaee
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Zhongguo dianli, 2021 Focusing on the problem of spectrum leakage in Fourier harmonic analysis caused by rapid broadband changes in frequency and harmonics in isolated network under unstable condition, an analysis method for frequency and transient harmonics is proposed based
Denghui YANG, Mingxing ZHU, Bin XU
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IEEE Access, 2020 To reveal the penetration characteristics of high-frequency harmonics of the traction network to the three-phase 380 V power system in the traction substation (TSS), the harmonic equivalent circuit model and harmonic penetration mathematical model of the
Yuanzhe Zhao +3 more
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High-frequency thermal processes in harmonic crystals [PDF]
Doklady Physics, 2017 We consider two high-frequency thermal processes in uniformly heated harmonic crystals relaxing towards equilibrium: (i) equilibration of kinetic and potential energies and (ii) redistribution of energy among spatial directions. Equation describing these processes with deterministic initial conditions is derived.
Kuzkin, Vitaly A., Krivtsov, Anton M.
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Calculation improvement of no-load stray losses in induction motors with experimental validation [PDF]
Serbian Journal of Electrical Engineering, 2015 On the basis of the known fact that all air gap main flux density variations are enclosed by permeance slot harmonics, only one component of stray losses in rotor (stator) iron is considered in the new classification, instead of 2 components ...
Kostić Miloje M.
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Energy Reports, 2022 Due to the existence of high amount stator current harmonics caused by the inverter nonlinearity, the operation performance of Permanent Magnet Servo System (PMSS) used Proportional–Integral (PI) controller will be affected.
Tianqing Yuan +3 more
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