Results 11 to 20 of about 702 (177)

A novel method for online voltage stability assessment based on PMU measurements and Thevenin equivalent

open access: yesIET Generation, Transmission & Distribution, 2022
From the power systems security point of view, determining the voltage stability margin is essential for the operation of systems. An inaccurate determination of the maximum loading factor or voltage collapse point in a power system may cause voltage ...
Rohallah Pourbagher   +2 more
doaj   +1 more source

A Novel State of Charge Estimation Method for Ternary Lithium Batteries Based on System Function and Extended Kalman Filter

open access: yesInternational Journal of Electrochemical Science, 2020
The Equivalent Thevenin model is establish to describe the external performance of ternary lithium ion battery base on Hybrid Pulse Power Characteristic experiment by identifying and verifying model parameters.
Xiong Xin   +4 more
doaj   +1 more source

Electromagnetic Compatibility Analysis of Quadcopter UAVs Using the Equivalent Circuit Approach

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
Studying the electromagnetic compatibility of an Unmanned Aerial Vehicle (UAV) using full-wave electromagnetic simulations is computationally challenging.
Mohamed Z. M. Hamdalla   +2 more
doaj   +1 more source

Güç Sistemlerinde Thevenin Eşdeğer Devresi Kullanılarak Gerilim Kararlılığı Sınırlarının Gerçek Zamanlı Değerlendirmesi

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2021
Bu çalışmada, çok baralı bir güç sisteminin herhangi bir yük barasından görülen Thevenin empedansı ve yük empedansı kullanılarak yük barasına gerilim kararlılığı değerlendirmesi yapılmıştır.
Enes Talha Gümüş, Mehmet Ali Yalçın
doaj   +1 more source

A novel hybrid equivalent circuit model for lithium-ion battery considering nonlinear capacity effects

open access: yesEnergy Reports, 2021
In this paper, a novel hybrid equivalent circuit model for lithium-ion battery. The proposed equivalent circuit model of lithium-ion battery is based on Thevenin equivalent circuit model, and a state-of-charge (SOC) part is added into the model to ...
Dongdong Chen   +3 more
doaj   +1 more source

Detailed quantitative comparison of half-bridge modular multilevel converter modelling methods

open access: yesThe Journal of Engineering, 2019
This paper presents a detailed comparison of different modelling methods of the half-bridge modular multilevel converter (HB-MMC), namely, switching function, Thevenin equivalent, and averaged, considering both MMC implementations (large and reduced ...
Deyang Guo   +6 more
doaj   +1 more source

An Accurate Time Constant Parameter Determination Method for the Varying Condition Equivalent Circuit Model of Lithium Batteries

open access: yesEnergies, 2020
An accurate estimation of the state of charge for lithium battery depends on an accurate identification of the battery model parameters. In order to identify the polarization resistance and polarization capacitance in a Thevenin equivalent circuit model ...
Liang Zhang   +5 more
doaj   +1 more source

A Self-Calibration SOC Estimation Method for Lithium-Ion Battery

open access: yesIEEE Access, 2023
Accurate state of charge (SOC) estimation is essential for the battery management system (BMS). In engineering, inappropriate selection of equivalent circuit model (ECM) and model parameters is common for lithium-ion batteries.
Yueshuai Fu, Huimin Fu
doaj   +1 more source

Modified Impedance-Based OOS Protection Based on On-Line Thévenin Equivalent Estimation

open access: yesIranian Journal of Electrical and Electronic Engineering, 2021
In this paper, a novel approach based on the Thévenin tracing is presented to modified conventional impedance-based out-of-step (OOS) protection. In conventional approach, the OOS detection is done by measuring positive sequence impedance.
S. R. Hosseini   +2 more
doaj  

Communication-less adaptive directional overcurrent protection strategy considering islanded mode detection in active distribution networks

open access: yesResults in Engineering, 2023
The integration of distributed energy resources (DERs) in electric distribution networks originates the Active Distribution Networks (ADNs). The presence of DERs introduces challenges to conventional protection schemes due to bidirectional power flows ...
J. Orozco-Álvarez   +2 more
doaj   +1 more source

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