Results 61 to 70 of about 702 (177)

Identifying Oscillation‐Vulnerable Buses Using Impedance‐Based Reflection Coefficient

Electronics Letters, Volume 62, Issue 1, January/December 2026.
We propose a method to identify oscillation‐vulnerable buses by applying the Barkhausen criterion to an impedance‐based reflection‐coefficient analysis in power systems. The method computes the reflection‐coefficient magnitude and phase from the Thevenin impedance seen from each bus and the corresponding load impedance, and evaluates phase variations ...
Taewan Choi, Hyun‐Keun Ku, Jaehyeong Lee, Dongho Lee   +3 more
wiley   +1 more source

Evaluation of Lithium-Ion Battery Equivalent Circuit Models for State of Charge Estimation by an Experimental Approach

Energies, 2011
To improve the use of lithium-ion batteries in electric vehicle (EV) applications, evaluations and comparisons of different equivalent circuit models are presented in this paper.
Jinxin Fan, Hongwen He, Rui Xiong
doaj   +1 more source

Real‐Time Active Power Control Method Considering Voltage Security Constraints and Effective Regulation Space of Multitype Resources

IET Energy Systems Integration, Volume 8, Issue 1, January/December 2026.
ABSTRACT Renewable energy bases in Desert‐Gobi‐Wasteland (DGW) areas connected with high‐voltage direct current (HVDC) transmission systems show notable weak‐grid features, including low inertia, weak damping and a low short‐circuit ratio. This results in strong active power–voltage (P–V) coupling effects, making existing real‐time active power control
Guoqing Li, Heyang Sun, Shouqi Jiang, Yechun Xin, Jian Lou   +4 more
wiley   +1 more source

Improved MPPT for PV Systems Combining Thevenin Equivalents with Simple Neural Networks

ITEGAM-JETIA
Efficient MPPT (Maximum Power Point Tracking) algorithms are required for PV (Photovoltaic) systems in order to obtain maximum power under temperature and sun irradiation variations.
khessam medjdoub, Marwa Bouazza, Mohamed Habbab, Abdeldjebar Hazzab, Anis Njeh, Hafedh Trabelsi   +5 more
doaj   +1 more source

A High-Efficiency RF Harvester with Maximum Power Point Tracking

Proceedings, 2018
This paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT).
Manel Gasulla, Francesc J. Robert, Josep Jordana, Edgar Ripoll-Vercellone, Jordi Berenguer, Ferran Reverter   +5 more
doaj   +1 more source

Modelling of DFIG-based wind turbine for low-frequency oscillation analysis of power system with high penetration of distributed energy

The Journal of Engineering, 2019
This study investigates modelling of doubly-fed induction generator (DFIG)-based wind turbines for low-frequency oscillation analysis of power systems with high penetration of distributed energy.
Yunhui Huang, Weihao Chen, Xiangtian Deng, Jinrui Tang, Guorong Zhu, Haitao Zhang   +5 more
doaj   +1 more source

Optimizing state of charge estimation using thevenin models and extended Kalman filter

Discover Electronics
Precise battery modeling plays a critical role in enhancing State of Charge (SoC) estimation and optimizing Battery Management Systems (BMS) for electric vehicles and energy storage systems.
Hamza Benhammou, Kamal Anoune, Abdelali Tajmouati   +2 more
doaj   +1 more source

Using an Evolutionary Algorithm for Harmonic Load Modeling by Norton and Thevenin Equivalents.

International journal of electrical and computer engineering systems, 2014
The Norton equivalent model for harmonic load modeling is used widely. The parameters of the model are usually calculated analytically. These calculations are based on measured or simulated voltage/current waveforms. In this case, harmonic analysis is needed to obtain the harmonic spectra. After this step, model parameter values are calculated for each
Bilandžija, Domagoj, Barukčić, Marinko, Ćorluka, Venco   +2 more
openaire   +5 more sources

A rapid simulation method for full-bridge sub-module MMC based on bridge arm equivalent capacitance

Zhejiang dianli
MMC （modular multilevel converter） contains a large number of switching elements， which brings a huge computational burden to the electromagnetic transient simulation.
LU Yi, WU Junjian, QIU Peng, CHEN Qian, HUANG Xiaoming, XU Kehan, XU Zheng   +6 more
doaj   +1 more source

Lithium Ion Batteries—Development of Advanced Electrical Equivalent Circuit Models for Nickel Manganese Cobalt Lithium-Ion

Energies, 2016
In this paper, advanced equivalent circuit models (ECMs) were developed to model large format and high energy nickel manganese cobalt (NMC) lithium-ion 20 Ah battery cells.
Alexandros Nikolian, Yousef Firouz, Rahul Gopalakrishnan, Jean-Marc Timmermans, Noshin Omar, Peter van den Bossche, Joeri van Mierlo   +6 more
doaj   +1 more source