Results 111 to 120 of about 9,627 (228)

Comparisons of Modeling and State of Charge Estimation for Lithium-Ion Battery Based on Fractional Order and Integral Order Methods

open access: yesEnergies, 2016
In order to properly manage lithium-ion batteries of electric vehicles (EVs), it is essential to build the battery model and estimate the state of charge (SOC). In this paper, the fractional order forms of Thevenin and partnership for a new generation of
Renxin Xiao   +5 more
doaj   +1 more source

On the use of the average large separation in surface layer independent model fitting

open access: yes, 2014
The physics of the outer layers of a star are not well understood but these layers make a major contribution to the large separation. We quantify this using stellar models and show that the contribution ranges from 6\% from the outer 0.1\% of the radius ...
Roxburgh, Ian W
core   +1 more source

Shapelet‐Based Method for Short‐Term Voltage Stability Assessment Considering Interaction Mechanisms in Multi‐Infeed HVDC System

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
The study presents a shapelet‐based method for short‐term voltage stability assessment in multi‐infeed HVDC systems, directly addressing the challenges of high‐dimensional, nonlinear and time‐varying phenomena intrinsic to modern power grids. By integrating a multi‐timescale interaction mechanism with an interpretable time‐series data mining approach ...
Yubo Sun, Shuqing Zhang, Chao Lu
wiley   +1 more source

Mechanism and Data-Driven Fusion SOC Estimation

open access: yesEnergies
An accurate assessment of the state of charge (SOC) of electric vehicle batteries is critical for implementing frequency regulation and peak shaving. This study proposes mechanism- and data-driven SOC fusion calculation methods.
Aijun Tian   +4 more
doaj   +1 more source

Admittance‑Based Two‑Stage Optimisation of GFM‑STATCOM Parameters for Transient Voltage Support in DFIG Wind Farms

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper builds an admittance model for a DFIG‐STATCOM parallel system. Based on the system, the paper provides a method to optimise the control of the STATCOM, which aims to increase the performance of the system during symmetrical faults .
Wenhao Du   +5 more
wiley   +1 more source

Electrical Characterization and Modeling of a Gelatin/Graphene System

open access: yesAdvances in Condensed Matter Physics, 2015
A gelatin/graphene composite has been analyzed by means of current density-voltage and the electrical impedance measurements. The DC electrical behavior has been interpreted in terms of an equivalent Thévenin model taking into account the open circuit ...
Giovanni Landi   +3 more
doaj   +1 more source

Non-LTE line formation for heavy elements in four very metal-poor stars

open access: yes, 2007
Stellar parameters and abundances of Na, Mg, Al, K, Ca, Sr, Ba, and Eu are determined for four very metal-poor stars (-2.66 < [Fe/H] < -2.15) based on non-LTE line formation and analysis of high-resolution (R ~60000 and 90000) high signal-to-noise (S/N >
Aldenius   +114 more
core   +1 more source

The Chemical Composition of {\tau} Ceti and Possible Effects on Terrestrial Planets

open access: yes, 2015
{\tau} Ceti (HD10700), a G8 dwarf with solar mass of 0.78, is a close (3.65 pc) sun-like star where 5 possibly terrestrial planet candidates (minimum masses of 2, 3.1, 3.5, 4.3, and 6.7 Earth masses) have recently been discovered. We report abundances of
Pagano, Michael   +3 more
core   +1 more source

Online assessment of short-term voltage stability based on hybrid model and data-driven approach

open access: yesInternational Journal of Electrical Power & Energy Systems
With the continuously increasing integration of renewable energy sources into power grids, the dynamic response of a power system is becoming more complex.
Guowei Cai   +5 more
doaj   +1 more source

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