Results 11 to 20 of about 4,793 (259)

Distortion-Free 1-Bit PWM Coding for Digital Audio Signals [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
Although uniformly sampled pulse width modulation (UPWM) represents a very efficient digital audio coding scheme for digital-to-analog conversion and full-digital amplification, it suffers from strong harmonic distortions, as opposed to benign non ...
Mourjopoulos John, Floros Andreas
doaj   +3 more sources

Harmonic Distortion Indices for Experimental Characterization of Variable Frequency Drives [PDF]

open access: yesIEEE Access
Frequency converters controlling electric motors are widely used as they increase the functionality of the equipment and improve energy efficiency. However, it is inevitable that the quality of the power delivered to the motor does not have the same ...
Angel Arranz-Gimon   +3 more
doaj   +3 more sources

Harmonics Measurement, Analysis, and Impact Assessment of Electric Vehicle Smart Charging [PDF]

open access: yesIEEE Open Journal of Vehicular Technology
Smart charging for Electric Vehicles (EVs) is gaining traction as a key solution to alleviate grid congestion, delay the need for costly network upgrades, and capitalize on off-peak electricity rates.
Murat Senol   +7 more
doaj   +2 more sources

Impact Assessment and Mitigation of Electric Vehicle Smart Charging Harmonics [PDF]

open access: yesIEEE Access
Smart charging of electric vehicles (EVs) offers significant opportunities for grid operators and EV users, including deferring costly network reinforcements and reducing charging costs.
Murat Senol, I. Safak Bayram
doaj   +3 more sources

Revisited Concept of Three-Phase Transformers’ Short-Circuit Resistances in Light of the Institute of Electric and Electronics Engineers (IEEE) Standard C57.110-2018 [PDF]

open access: yesApplied Sciences
Short-circuit resistances are transformer parameters that characterize the electrical load losses and correct operation of these machines. However, the traditional concept of short-circuit resistance, independent of the harmonic frequencies, has been ...
Vicente León-Martínez   +3 more
doaj   +3 more sources

Harmonic Enhancement in Low Bitrate Audio Coding Using an Efficient Long-Term Predictor [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
This paper proposes audio coding using an efficient long-term prediction method to enhance the perceptual quality of audio codecs to speech input signals at low bit-rates.
Song Jeongook   +3 more
doaj   +1 more source

Análisis de la calidad de la energía en un centro de cómputos Analysis of power quality on data center [PDF]

open access: yesIngeniare: Revista Chilena de Ingeniería, 2013
Este trabajo analiza el impacto que provoca, sobre los índices de calidad de la energía eléctrica, un número importante de cargas no lineales pertenecientes a un centro de cómputos y conectadas a una red trifásica.
Juan Antonio Suárez   +4 more
doaj   +1 more source

A reliability model for overcurrent relays considering harmonic-related malfunctions [PDF]

open access: yes, 2021
The number of harmonic-producing sources is rapidly growing in the power grid due to the increased penetration of power electronic-interfaced resources (such as wind turbines, photovoltaic systems, and energy storage units) and proliferation of nonlinear
Fotuhi-Firuzabad, Mahmud   +3 more
core   +1 more source

Analysis of the use of the Hanning Window for the measurement of interharmonic distortion caused by close tones in IEC standard framework [PDF]

open access: yes, 2022
Producción CientíficaThe widespread use of devices based on power electronics and other nonlinear loads has led to an increase in harmonic distortion that affects the quality of power systems.
Moríñigo Sotelo, Daniel   +3 more
core   +1 more source

SiGe HBTs and BiCMOS Technology for Present and Future Millimeter-Wave Systems

open access: yesIEEE Journal of Microwaves, 2021
This paper gives an overall picture from BiCMOS technologies up to THz systems integration, which were developed in the European Research project TARANTO.
Thomas Zimmer   +25 more
doaj   +1 more source

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