Results 51 to 60 of about 5,898 (221)

Stability and Synchronization of MMC‐HVDC Systems Using SRF and Inertia‐Based PLLs

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study investigates the influence of synchronous reference frame PLL (SRF‐PLL) and the inertia PLL (IPLL) on the stability of grid‐connected modular multilevel converter high voltage direct current (MMC‐HVDC) systems. The findings highlight intrinsic stability limitations of PLL‐based systems, offering insights toward more stable, PLL‐less ...
Shuai Wang, Robin Preece, Mike Barnes
wiley   +1 more source

Generation Algorithms for Thévenin and Norton Equivalent Circuits

Energies
The growing complexity of electrical systems requires advanced analysis tools to optimize the design time and resources. While many circuit simulators exist, they often lack the flexibility needed for real-world applications.
Mihaela Grib, Ioana-Gabriela Sirbu, Lucian Mandache, Marilena Stanculescu, Mihai Iordache, Lavinia Bobaru, Dragos Niculae   +6 more
doaj   +1 more source

A Novel Bi-LSTM-Based Method for Thevenin Equivalent Parameter Identification

Frontiers in Energy Research, 2022
Insufficient power system operation data sets hinder the extensive application of various artificial intelligence algorithms. The solution of the Thevenin equivalent parameters especially depends on the power flow data of the grid.
Chengyu Li, Jilai Yu, Jiaxin Lv
doaj   +1 more source

Fault calculations using three terminal Thevenin’s equivalent circuit

International Journal of Electrical Power & Energy Systems, 2011
Abstract The aim of this paper is to present a systematic approach of calculating fault currents due to the switching of elements or fault impedances that involve two buses and ground. Traditionally, Thevenin’s equivalent circuits are made up of two terminals suitable for calculating the current into an element connected between both terminals of the
openaire   +1 more source

Total Distortion—A New Power Quality Index on Current Harmonic Evaluation for Users With Internal Loads and DERs

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
ABSTRACT The IEEE Std 519–2022 IEEE Standard for harmonic control in electric power systems is widely used for controlling the harmonics in the electric power system. It uses the total demand distortion (TDD) for current harmonic evaluation at the point of common coupling (PCC).
Sivaraman P, Sharmeela C, Sanjeevikumar P, Sabari B. K   +3 more
wiley   +1 more source

Research Progress of Battery Life Prediction Methods Based on Physical Model

Energies, 2023
Remaining useful life prediction is of great significance for battery safety and maintenance. The remaining useful life prediction method, based on a physical model, has wide applicability and high prediction accuracy, which is the research hotspot of ...
Xingxing Wang, Peilin Ye, Shengren Liu, Yu Zhu, Yelin Deng, Yinnan Yuan, Hongjun Ni   +6 more
doaj   +1 more source

Optimal sizing of C-type passive filters under non-sinusoidal conditions [PDF]

, 2014
In the literature, much attention has been focused on power system harmonics. One of its important effects is degradation of the load power factor. In this article, a C-type filter is used for reducing harmonic distortion, improving system performance ...
Dugan R. C., Garza F. D., IEEE Standard 18-2002, IEEE Standard 519–1992, Raymond C.   +4 more
core   +2 more sources

Oxygen delivery and consumption in aging skeletal muscle: Insights from an electric analogy model of PO2 transients

Physiological Reports, Volume 14, Issue 2, January 2026.
Abstract Mathematical models are essential for understanding oxygen transport and utilization during metabolic transitions. An electrical analogy concept proposed that exponential PO2 transients arise from interaction between oxygen storage capacitance and transport conductances, but lacked explicit circuit representation limiting quantitative ...
Aleksander S. Golub, Roland N. Pittman, William H. Nugent, Bjorn K. Song   +3 more
wiley   +1 more source

A New Procedure Based on Continuous RTU Measurement to Estimate Multi-port Thevenin Equivalent Circuit Parameters of an External Power System [PDF]

Iranian Journal of Electrical and Electronic Engineering
In this paper, a novel method is presented that can accurately estimate the Thevenin equivalent circuit parameters of an external power system by RTUs. The presented method is based on the simultaneous measurements of the desired points in the boundary ...
Nabiollah Ramezani, Mohsen Shahnazdoost Kilvaei   +1 more
doaj  

Certain investigation and implementation of Coulomb counting based unscented Kalman filter for state of charge estimation of lithium-ion batteries used in electric vehicle application

International Journal of Thermofluids, 2023
At various operating conditions, battery performance and attributes will change. By employing precise, effective circuit and battery models, designers can forecast and optimize battery run-time, the current state of charge (SOC), and circuit performance.
Selvaraj Vedhanayaki, Vairavasundaram Indragandhi   +1 more
doaj   +1 more source