Results 41 to 50 of about 4,497 (155)

Simulasi Filter Aktif Hibrid Konfigurasi Seri-Seri Dan Unjuk Kerjanya Untuk Meredam Harmonisa Pada Beban Induction Furnace [PDF]

open access: yes, 2006
Harmonics Filter's USAge had been widely recommended to overcome harmonics problem which occurred because of non-linear load presence in many industrial plants and manufacturing machines.
Dewi, R. S. (Ratna)   +2 more
core   +1 more source

Disturbance‐Resilient Voltage/Power‐Quality Management for Islanded Inverters Using Self‐Tuning Type‐3 Fuzzy Controller

open access: yesEnergy Science &Engineering, EarlyView.
An adaptive fuzzy controller using an interval type‐3 fuzzy logic system replaces the SMC switching term to mitigate chattering while preserving global stability for islanded inverters. Simulations show lower THD, greater robustness to disturbances and parameter variations, and improved voltage‐tracking accuracy, with applicability to other uncertain ...
Man‐Wen Tian   +7 more
wiley   +1 more source

Spatial distributions of electromagnetic field variations and injection regions during the 20 November 2007 sawtooth event [PDF]

open access: yes, 2009
We report multi-spacecraft and ground-based observations of a "sawtooth" event on 20 November 2007. For this event, data from three THEMIS, two GOES, and four LANL spacecraft are available as well as those from extensively distributed ...
D. Larson   +12 more
core   +2 more sources

A Hybrid EV Charging Architecture Integrating DC Fast Charging and Wireless Power Transfer

open access: yesEnergy Science &Engineering, EarlyView.
A hybrid EV charging architecture combining DC fast charging and wireless power transfer is proposed. The system achieves high efficiency, grid compliance, and reliable bidirectional operation, offering a scalable solution that enhances user convenience while paving the way for smarter, future‐ready EV charging infrastructure.
Ali Almaktoof   +3 more
wiley   +1 more source

Evaluation of harmonic and THD using LC filter for five phase induction motor drive at low speed [PDF]

open access: yes, 2017
Distortion in the power system plight cause many problems, periodic distortions cause unwanted harmonics, these harmonics does not contribute additional energy for load, instead it is dissipated as heat in the load.
Ananda, A.S., Manjesh, .
core   +1 more source

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

Testing high resolution SD ADC’s by using the noise transfer function [PDF]

open access: yes, 2004
A new solution to improve the testability of high resolution SD Analogue to Digital Converters (SD ADC’s) using the quantizer input as test node is described.
De-Venuto, Daniela, Richardson, Andrew
core  

Bitumen chemical modification by thiourea dioxide [PDF]

open access: yes, 2011
This work evaluates a novel bitumen modification through the use of a chemical agent, thiourea dioxide, substance which has been traditionally used as a reducing agent. Thermogravimetric analysis demonstrated the formation of new chemical compounds, most
Cuadri Vega, Antonio Abad   +4 more
core   +1 more source

Subclinical cardiac alterations and cardiometabolic profile in adolescents with newly diagnosed polycystic ovary syndrome: A cross‐sectional comparative echocardiographic study

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective While cardiometabolic comorbidities have been well established in adults with polycystic ovary syndrome (PCOS), it remains unclear whether the early signs of cardiovascular morbidity emerge during adolescence. This study aimed to investigate whether metabolic and cardiovascular alterations begin in adolescents with PCOS.
Demet Aygün Ari   +8 more
wiley   +1 more source

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

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  

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