Results 41 to 50 of about 148,448 (274)

Three Phase Linear State Estimation Method of Substation Based on Zero Impedance Model

open access: yesIEEE Access, 2023
In order to improve the ability to detect and identify topological errors and measurement errors, and further enhance the rapidity and reliability of substation state estimation, this paper proposes a three-phase linear state estimation method for ...
Jifang Li   +4 more
doaj   +1 more source

Voltage harmonic reduction for randomly time-varying source characteristics and voltage harmonics [PDF]

open access: yes, 2006
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted.
Zobaa, AF
core   +1 more source

Time-varying harmonic impedance estimation based on locally-geographically weighted regression

open access: yes电力工程技术
In existing estimation methods for utility harmonic impedance, it is commonly assumed that the harmonic impedance remains invariant, which often diverges from actual conditions.
XU Fangwei   +5 more
doaj   +1 more source

Modeling and Emulating a Physiotherapist's Role in Robot‐Assisted Rehabilitation

open access: yesAdvanced Intelligent Systems, 2020
In home‐based rehabilitation, one possible approach is haptic teleoperation in which a hospital‐based therapist is haptically linked and tele‐presented to a home‐based patient to effectively simulate traditional in‐hospital therapies over a distance.
Ran Tao   +4 more
doaj   +1 more source

Utility harmonic impedance estimation based on mutual information and data optimization

open access: yes电力工程技术, 2023
Accurate calculation of harmonic impedance is the premise of harmonic control and reasonable division of harmonic responsibility. The existing harmonic impedance estimation methods should meet the conditions that the background harmonic fluctuations are ...
XU Fangwei   +5 more
doaj   +1 more source

Characterization and comparative evaluation of novel planar electromagnetic sensors [PDF]

open access: yes, 2005
The characterization of three types of novel planar electromagnetic sensors: 1) meander; 2) mesh; and 3) interdigital configuration, has been studied and their comparative performance has been evaluated based on their areas of applications.
Gooneratne, C. P.   +3 more
core   +2 more sources

Active Fault Detection Device for LV Electrical Installations with Goertzel-Based Impedance Estimation and IoT Connectivity

open access: yesEngineering Proceedings
An active (harmonic-injection based) fault detection device, relevant to low voltage electrical installations is studied in this paper. This compact and flexible device is compatible with TN/TT earthing systems, and it is capable of detecting power theft
Christos Pechlivanis   +5 more
doaj   +1 more source

A Fast Lithium-Ion Battery Impedance and SOC Estimation Method Based on Two-Stage PI Observer

open access: yesWorld Electric Vehicle Journal, 2021
Due to the complex changes in battery state, the accurate and fast estimation of battery state of charge (SOC) is still a great challenge. Here, a fast estimation method of battery impedance and SOC based on a multi-level PI observer is proposed.
Tao Chen   +3 more
doaj   +1 more source

On the Detection of Neutral Loss, Islanding, and Meter Tampering in Electrical Installations

open access: yesIEEE Open Journal of the Industrial Electronics Society
Neutral conductor loss on the upstream network of an electrical installation, as well as unintentional islanding operation, are two critical issues directly related to the safety of both human life and equipment of the electrical installation ...
Syllas Frantzeskakis   +3 more
doaj   +1 more source

A new method of accurate broken rotor bar diagnosis based on modulation signal bispectrum analysis of motor current signals [PDF]

open access: yes, 2014
Motor current signature analysis (MCSA) has been an effective way of monitoring electrical machines for many years. However, inadequate accuracy in diagnosing incipient broken rotor bars (BRB) has motivated many studies into improving this method.
Alwodai, Ahmed   +5 more
core   +1 more source

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