Results 61 to 70 of about 2,025,997 (330)
Gong-kuang zidonghua, 2012 For problems of voltage and current distortion and capacity waste of grid caused by harmonic pollution, power quality testing and analysis were given, and a scheme of using SVG for harmonic elimination and reactive power compensation were proposed ...
GUO Jin-long, LV Jing-jiang, WANG Yi-lei
doaj
An Improved SHEPWM Modulation Algorithm for Three-levelEnergy Feedback Inverter
Kongzhi Yu Xinxi Jishu, 2021 The maximum switching frequency of high power converters is limited by the heat dissipation system and cannot be randomly increased. Consequently, increasing low-order harmonics are introduced into the grid.
WU Xuefeng +4 more
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Dissipative Dynamics of an Open Bose Einstein Condensate [PDF]
, 1999 As an atomic Bose Einstein condensate (BEC) is coupled to a source of uncondensed atoms at the same temperature and to a sink (extraction towards an atom laser) the idealized description in terms of a Gross-Pitaevsky equation (GP) no longer holds.
Anderson +20 more
core +1 more source
Synchrotron Radiation for Quantum Technology
Advanced Functional Materials, EarlyView.Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader +10 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
IEEE AccessElectric train transportation requires a substantial amount of electrical energy to power trains’ propulsion systems. Consequently, photovoltaic (PV) arrays are considered for installation at traction substations in heavy rail systems to supply ...
Chakrit Panpean +3 more
doaj +1 more source
Five-level selective harmonic elimination PWM strategies and multicarrier phase-shifted sinusoidal PWM: A comparison [PDF]
, 2005 The multicarrier phase-shifted sinusoidal pulse-width modulation (MPS-SPWM) technique is well-known for its important advantage of offering an increased overall bandwidth as the number of carriers multiplied with their equal frequency directly controls ...
Agelidis, V.G. +3 more
core +1 more source
Defect elimination in torsional harmonic reducer based on harmonic resonance [PDF]
Vibroengineering Procedia, 2019 This paper will introduce the torsional vibration test method and signal analysis for a harmonic reducer in industrial robot. The harmonic reducer is generally applied to the fifth and sixth axes of the industrial robots, and the torsional vibration will affect the mechanical performance.
Dishan Huang, Peng Zong, Jingjun Gu
openaire +1 more source
Advanced Functional Materials, EarlyView.A miniaturized mechano‐acoustic sensor is developed using an electrospun PVDF nanomesh as the diaphragm in a capacitive sensor structure. Unlike conventional nanomesh‐based sensors, it achieves high linear sensitivity, a broad and flat frequency response, and a compact form factor.
Jeng‐Hun Lee +8 more
wiley +1 more source
A New Synthesis Technique of Control Signals for Power Converters Based on Pulse Position Modulation
IEEE AccessOver the last years there has been plenty of research activity about modulation techniques with the aim of optimizing power converters performance. Traditional methods such as Pulse Width Modulation and Selective Harmonic Elimination/Mitigation are ...
Lara Bruno, Vito G. Monopoli
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