Results 61 to 70 of about 471 (171)

Voltage sag source identification based on the sign of internal resistance in a “Thevenin's equivalent circuit”

International Transactions on Electrical Energy Systems, 2017
Summary This paper briefly introduces the existing methods for voltage sag source location and theoretically analyzes some reasons why high accuracy cannot be achieved by using these methods. Based on the redefined voltage sag source location “reference direction” and the analysis of voltage sag source's influences in power network, it is pointed out ...
Yi Tang, Ruipeng Wei, Kui Chen, Yongli Fang   +3 more
openaire   +1 more source

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

State of Charge Estimation of a Lithium Ion Battery Based on Adaptive Kalman Filter Method for an Equivalent Circuit Model

Applied Sciences, 2019
Due to its accuracy, simplicity, and other advantages, the Kalman filter method is one of the common algorithms to estimate the state-of-charge (SOC) of batteries. However, this method still has its shortcomings.
Xiao Ma, Danfeng Qiu, Qing Tao, Daiyin Zhu   +3 more
doaj   +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

SOC Estimation with an Adaptive Unscented Kalman Filter Based on Model Parameter Optimization

Applied Sciences, 2019
State of charge (SOC) estimation is generally acknowledged to be one of the most important functions of the battery management system (BMS) and is thus widely studied in academia and industry.
Xiangwei Guo, Xiaozhuo Xu, Jiahao Geng, Xian Hua, Yan Gao, Zhen Liu   +5 more
doaj   +1 more source

ДВОПОЛЮСНА ЗАСТУПНА СХЕМА ЛІНІЙНОГО ЕЛЕКТРИЧНОГО КОЛА СИНУСОЇДНОГО СТРУМУ, ЕКВІВАЛЕНТНА ЗА КОМПЛЕКСНОЮ ПОТУЖНІСТЮ

Праці Інституту електродинаміки Національної академії наук України
It has been established that the complex Thevenin’s circuit equivalent does not adequately reproduce such energy char-acteristics of the AC primary circuit as active power and power factor.
М.Ю. Артеменко, Ю.В. Кутафін, І.А. Шаповал, В.М. Михальський, В.В. Чопик, С.Й. Поліщук3   +5 more
doaj   +1 more source

Online Parameter Identification and State of Charge Estimation of Lithium-Ion Batteries Based on Forgetting Factor Recursive Least Squares and Nonlinear Kalman Filter

Energies, 2017
State of charge (SOC) estimation is the core of any battery management system. Most closed-loop SOC estimation algorithms are based on the equivalent circuit model with fixed parameters. However, the parameters of the equivalent circuit model will change
Bizhong Xia, Zizhou Lao, Ruifeng Zhang, Yong Tian, Guanghao Chen, Zhen Sun, Wei Wang, Wei Sun, Yongzhi Lai, Mingwang Wang, Huawen Wang   +10 more
doaj   +1 more source

Experimental demonstration of an atomtronic battery

New Journal of Physics, 2017
Operation of an atomtronic battery is demonstrated where a finite-temperature Bose–Einstein condensate stored in one half of a double-well potential is coupled to an initially empty load well that is impedance matched by a resonant terminator beam.
Seth C Caliga, Cameron J E Straatsma, Dana Z Anderson   +2 more
doaj   +1 more source

A Comparative Study Based on the Least Square Parameter Identification Method for State of Charge Estimation of a LiFePO4 Battery Pack Using Three Model-Based Algorithms for Electric Vehicles

Energies, 2016
Battery energy storage management for electric vehicles (EV) and hybrid EV is the most critical and enabling technology since the dawn of electric vehicle commercialization.
Taimoor Zahid, Weimin Li
doaj   +1 more source

Linearization of Photovoltaic Cell Single Diode Equivalent Circuit Model Using Piecewise Linear Parallel Branches Model and Findin Fill Factor

Düzce Üniversitesi Bilim ve Teknoloji Dergisi
In this article, the linearization and analysis of the Photovoltaic (PV) cell single diode equivalent circuit model have been performed. The diode element in the PV cell equivalent circuit model is a nonlinear component.
Suleyman Adak
doaj   +1 more source