Results 1 to 10 of about 2,155,111 (338)

Omnidirectional Triboelectric Nanogenerator for Wide-Speed-Range Wind Energy Harvesting [PDF]

open access: goldNanomaterials, 2022
The environmentally friendly harvesting of wind energy is an effective technique for achieving carbon neutrality and a green economy. In this work, a core–shell triboelectric nanogenerator (CS-TENG) for harvesting wind energy is demonstrated and the ...
Qiman Wang   +8 more
doaj   +6 more sources

A Readout System for High Speed Interface of Wide Range Chemiresistive Sensor Array [PDF]

open access: goldIEEE Access, 2022
This paper aims at designing a compact readout system for chemiresistive sensor array with high speed and high accuracy. The proposed scheme is based on Resistance-to-Voltage (R-V) conversion and targets high density wide ranged chemiresistive sensor ...
Shanthala Lakshminarayana   +3 more
doaj   +2 more sources

Permanent Magnet minimization in PM-Assisted Synchronous Reluctance motors for wide speed range [PDF]

open access: green, 2013
This paper presents a technique to modify the rotor lamination of a permanent-magnet-assisted synchronous reluctance motor, in order to reduce the magnet volume with no side effect on performance.
Armando, Eric Giacomo   +4 more
core   +3 more sources

Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range [PDF]

open access: goldEnergies, 2021
The subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds.
Piotr Drozdowski, Dariusz Cholewa
doaj   +2 more sources

Fast Entry Trajectory Planning Method for Wide-Speed Range UASs [PDF]

open access: goldDrones
Convex optimization has gained increasing popularity in trajectory planning methods for wide-speed range unmanned aerial systems (UASs) with multiple no-fly zones (NFZs) in the entry phase.
Weihao Feng   +5 more
doaj   +2 more sources

Wide Speed Range Operation Strategy of Indirect Matrix Converter–Surface Mounted Permanent Magnet Synchronous Motor Drive [PDF]

open access: goldEnergies, 2021
In order to expand the speed range for an indirect matrix converter–surface mounted permanent magnet synchronous motor drive (IMC-SPMSM), a wide speed range operation control strategy based on a flux-weakening control and an over-modulation method is ...
Nuofan Zou   +3 more
doaj   +2 more sources

Electrohydraulic Control of Alternator Drives with Wide Speed Range

open access: yesMeasurement + Control, 1970
Consideration is given to the problem of controlling the output speed of a hydraulic transmission system, when the main source of disturbance is the changing speed of the prime-mover.
G. K. Steel BSc, DIC, PhD, MIEE
doaj   +2 more sources

Sensorless Control of a PMSM Drive Using EKF for Wide Speed Range Supplied by MPPT Based Solar PV System

open access: goldElektronika ir Elektrotechnika, 2020
In photovoltaic (PV) applications, employing Surface-Mounted Permanent Magnet Synchronous Motor (SMPMSM) can be a suitable option, especially for solar pumping and Heating, Ventilation, and Air Conditioning (HVAC) applications.
Abbas Mahmood Oghor Anwer   +3 more
doaj   +3 more sources

Local correlation-based transition model for aerodynamic flows in wide speed range

open access: goldEngineering Applications of Computational Fluid Mechanics
A local correlation-based transition model is developed for aerodynamic flows in a wide speed range. New localized methods for the momentum-thickness Reynolds number are introduced for constructing local transition indicators. New transition correlations
Hexia Huang, Zaijie Liu, Huijun Tan
doaj   +2 more sources

Wide speed range operation of permanent magnet vernier machines [PDF]

open access: bronzeElectronics Letters, 2018
This letter proposes winding switching for the high‐performance of permanent‐magnet vernier machines (PMVMs) in wide speed range operation. The machine is operated in two modes: cumulative and differential. Before winding switching (cumulative mode), the machine is operated like a conventional three‐phase PMVM.
Arsalan Arif   +2 more
openalex   +2 more sources

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