Results 1 to 10 of about 5,879 (202)

Determination of the Thevenin equivalent in power grids using real records based on short circuit power [PDF]

IET Generation, Transmission & Distribution, 2021
In recent years, methods for loadability determination based on real‐time measurements have been proposed for long‐term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent
A. Fonseca, G. Salazar, F. Quilumba, F. Pérez‐Yauli   +3 more
doaj   +2 more sources

Propose a MPPT Algorithm Based on Thevenin Equivalent Circuit for Improving Photovoltaic System Operation [PDF]

Frontiers in Energy Research, 2020
Smart grids are considered as key solutions to solve current power security issues. Among these suggestions, microgrid is proposed to integrate distributed generations (DGs) such as photovoltaic (PV) system into the network and the control of DGs output ...
Binh Nam Nguyen, Van Tan Nguyen, Minh Quan Duong, Kim Hung Le, Huu Hieu Nguyen, Anh Tuan Doan   +5 more
doaj   +2 more sources

Performance Analysis of a Single-Diode Photovoltaic Model Based on a Thevenin’s Equivalent Circuit

Journal of Engineering and Sustainable Development
This article proposes a linear Thevenin's equivalent circuit for a single-diode model. The Thevenin's equivalent circuit is derived based on the piecewise linearization for the nonlinear characteristic of the diode.
Ammar AL-GIZI, Abbas Hussien Miry, Hussein M. Hathal, Aurelian Craciunescu   +3 more
doaj   +2 more sources

Coupling Short-Circuit Ratio Calculation Method Based on the Source Network Load Correlation Thevenin Equivalent

Energies
The short-circuit ratio is a key index used to measure the voltage support capability of new energy grid-connected systems, which contradicts its accuracy and practicability.
Li Sun, Lingwei Kong
doaj   +2 more sources

Electromagnetic Compatibility Analysis of Quadcopter UAVs Using the Equivalent Circuit Approach

IEEE 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, Anthony N. Caruso, Ahmed M. Hassan   +2 more
doaj   +1 more source

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

Energy 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, Long Xiao, Wenduan Yan, Yinbiao Guo   +3 more
doaj   +1 more source

Reactive Power Control Method for Enhancing the Transient Stability Total Transfer Capability of Transmission Lines for a System with Large-Scale Renewable Energy Sources

Energies, 2020
With the increased proportion of intermittent renewable energy sources (RES) integrated into the sending-end, the total transfer capability of transmission lines is not sufficient during the peak periods of renewable primary energy (e.g., the wind force),
Yuwei Zhang, Wenying Liu, Fangyu Wang, Yaoxiang Zhang, Yalou Li   +4 more
doaj   +1 more source

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

Energies, 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, Shunli Wang, Daniel-Ioan Stroe, Chuanyun Zou, Carlos Fernandez, Chunmei Yu   +5 more
doaj   +1 more source

State of Charge (SOC) Estimation of Lithium-ion Battery Based on Adaptive Square Root Unscented Kalman Filter

International Journal of Electrochemical Science, 2020
The improved battery management system (BMS) can give full play to the best performance of power battery, and the state of charge (SOC) estimation of power lithium-ion battery is the core and key technology of BMS. The Kalman filter method with the first-
Wang Kai, Feng Xiao, Pang Jinbo, Ren Jun, Duan Chongxiong, Li Liwei   +5 more
doaj   +1 more source

Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]

E3S Web of Conferences, 2020
In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu, Yang Dongwen, He Zhi, Duan Zhenfeng, Wang Dengmei   +4 more
doaj   +1 more source