Results 41 to 50 of about 664,180 (164)

A Bilevel Optimal Control Method and Application to the Hybrid Electric Vehicle

Optimal Control Applications and Methods, Volume 46, Issue 3, Page 1104-1119, May/June 2025.
Schematic representation of the Macro‐Micro method. ABSTRACT In this article we present a new numerical method based on a bilevel decomposition of optimal control problems. A strong connection between the proposed method and the classical indirect multiple shooting method is shown in the regular case, thanks to a link between the Bellman's value ...
Olivier Cots, Rémy Dutto, Sophie Jan, Serge Laporte   +3 more
wiley   +1 more source

Open Education as a threshold concept in Teacher Education: a theoretical framework for further research [PDF]

, 2018
Threshold concept framework: A threshold concept can be considered as akin to a portal, opening up a new and previously inaccessible way of thinking about something.
Baker, Nick, Crump, Helen, García Vallejo, Mari Cruz, Havemann, Leo, Keefer, Jeffrey, Marsh, J. Dawn, Marín, Victoria I., Nascimbeni, Fabio, Tur, Gemma   +8 more
core   +4 more sources

An online loop closing current calculation method for complex distribution networks considering source and load uncertainties

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper proposes an online method for calculating loop closing current that addresses the uncertainties in source and load fluctuations. By using a dual‐stack dynamic monitoring system and Thevenin's theorem for network modelling, the method accurately calculates both steady‐state and transient loop closing currents.
Weifeng Peng, Licheng Sha, Kaiyuan Zheng, Shufeng Dong, Xin Zhang, Jing Tian   +5 more
wiley   +1 more source

Are manufacturing I-V Mismatch and Reverse Currents Key Factors in Large Photovoltaic Arrays? [PDF]

, 2009
In this paper, two factors typical of large photovoltaic (PV) arrays are investigated: one is the current-voltage (I-V) mismatch consequent to the production tolerance; the other is the impact of reverse currents in different operating conditions ...
SPERTINO, Filippo, SUMAILI AKILIMALI, JEAN   +1 more
core   +1 more source

A Physics‐Informed Neural Network‐Based Transient Overvoltage Magnitude Prediction Method for Renewable Energy Stations Under DC Blocking Scenarios

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper first derives an analytical expression for the transient overvoltage (TOV) magnitude at critical nodes in the system caused by DC blocking (DCB) faults. Subsequently, an analytical formula is developed to characterize the relationship between the multiple renewable energy stations short circuit ratio (MRSCR) and the transient voltage rise ...
Guangyao Wang, Jun Liu, Jiacheng Liu, Xiaoming Liu, Tao Ding, Xianbo Ke, Chong Ren   +6 more
wiley   +1 more source

Modal Analysis of Power System With High IBR Penetration Based on Impedance Models

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
A unified physical interpretation of modal analysis based on the impedance model (MAI), based on the electrical distance perspective is further presented.To make MAI more applicable and accurate, a new total evaluation index is proposed to fix the potential misjudgment when computing the admittance sensitivity factor.
Le Zheng, Jiajie Zheng, Jiajian Lin, Hui Xu, Chongru Liu   +4 more
wiley   +1 more source

Real‐Time Tracking of Fault Development and Faulty Feeder Identification Method for Resonant Grounding System Based on Transient Information During Arc Suppression

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper proposes a fault tracking and feeder identification method based on the arc suppression process of resonant grounding systems. By analyzing the transient characteristics of zero‐sequence signals after full compensation by the arc suppression coil, the method enables both sensitive transition resistance identification (reflecting fault ...
Zhuang Jiang, Zixiong Wan, Xiangjun Zeng, Baowen Liu   +3 more
wiley   +1 more source

Renewable energy hosting capacity assessment in distribution networks based on multi‐strategy improved whale optimization algorithm

IET Renewable Power Generation, Volume 19, Issue 1, January/December 2025.
To effectively evaluate the renewable energy hosting capacity in distribution networks, this paper introduces a comprehensive hosting capacity assessment model considering various safety and stability constraints. Given the numerous non‐linear constraints inherent in the hosting capacity assessment model for distribution networks, a multi‐strategy ...
Chongwu Dong, Tao Yu, Zhenning Pan, Yufeng Wu, Ziyao Wang, Yipeng Wang, Keying Wang   +6 more
wiley   +1 more source

COMPRESSIVE SENSING-BASED METHODOLOGIES FOR SMART GRID MONITORING [PDF]

, 2020
Modern distribution networks, commonly known as Smart Grids, will be characterized by strictly requirements in terms of reliability and efficiency of the power supply.

core  

Artificial Intelligence Approaches for SOH Estimation in Lithium‐Ion Batteries: A Comprehensive Review of Progress, Critical Evaluations, Challenges, and Toward Future Outlooks

Applied Computational Intelligence and Soft Computing, Volume 2025, Issue 1, 2025.
In recent years, safety issues with electric vehicles (EVs) have grown. These EVs are powered by rechargeable lithium‐ion batteries (LIBs), which are key energy storage systems. The accurate estimation of these LIBs state of health (SOH) is crucial for reliable performance and reduction in safety issues.
Deepak Kumar, Rashid Nasimov, Akshat Singh, Amritanshu Jha, Anand Jha, M. Rizwan, Nur Ezlin Zamri   +6 more
wiley   +1 more source