Results 51 to 60 of about 1,071 (155)

Design and modelling techniques of permanent magnet fault current limiter [PDF]

, 2017
The design approach of the permanent magnet fault current limiter (PMFCL) was investigated. The result of recent published model was assessed using 3D FEM solvers and the discrepancy in the results was evaluated.
Asmaiel Ramadan, Faris Alnaemi, KARADY, Li, Liu   +4 more
core   +1 more source

Analysis of the fault current limiting requirement and design of the bridge‐type FCL in the multi‐terminal DC grid

IET Power Electronics, 2018
In the multi‐terminal flexible dc grid, it is important for the healthy network to ride through the dc fault. The converters should operate continuously after dc faults, staying unblocked. But the existing selective protection and isolation method may fail to react swiftly enough, because the propagation speed of the dc fault current is extremely fast.
Jiawei He, Bin Li, Ye Li
openaire   +1 more source

Optimizing 3D Bin Packing of Heterogeneous Objects Using Continuous Transformations in SE(3)

Advanced Intelligent Systems, EarlyView.
This article presents a method for solving the three‐dimensional bin packing problem for heterogeneous objects using continuous rigid‐body transformations in SE(3). A heuristic optimization framework combines signed‐distance functions, neural network approximations, point‐cloud bin modeling, and physics simulation to ensure feasibility and stability ...
Michele Angelini, Marco Carricato
wiley   +1 more source

Improving fault ride-through of three phase voltage source inverter during symmetrical fault using DC link fault current limiter [PDF]

, 2015
The majority of distributed generation (DG) units utilize three phase voltage source inverter (VSI) to exchange electric power with the utility grid. The VSI employs semiconductor devices (SDs) with limited current withstand capabilities which are very ...
Hagh, M. Tarafdar, Jalilian, A., Muttaqi, K. M., Naderi, SB, Negnevitsky, M.   +4 more
core   +2 more sources

Control Strategies for a Power Electronic Based Fault Current Limiter (FCL) in No-Fault Operation

RE&PQJ
Fault current limiters (FCL) in electrical power systems offer the opportunity to reduce short-circuit stresses to the system in the case of faults. But as electrical power systems are normally operated without faults most of the time, FCLs must not have negative effects during these periods of normal operation.
null Manuel Weiland, null Gerhard Herold, null Christoph Hahn   +2 more
openaire   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

Analytical Modeling of Rotary Electromagnetic Fault Current Limiter

IEEE Access, 2023
Rotary electromagnetic fault current limiter (FCL) is an emerging technology for limiting fault currents in the power network. The device consists of two movable air-core spherical reactor rings (i.e., inner and outer rings).
Seyed Amin Fazljoo, Aliakbar Damaki Aliabad, Ebrahim Amiri   +2 more
doaj   +1 more source

Protection of AC and DC Microgrids: Challenges, Solutions and Future Trends [PDF]

, 2015
In future, distributed energy resources (RESs) will be utilized at consumption points. As a consequence, power flow and fault current would be bidirectional and topologydependent; and hence the conventional protection strategies would be inefficient ...
Beheshtaein, Siavash, Guerrero, Josep M., Quintero, Juan Carlos Vasquez, Savaghebi, Mehdi   +3 more
core   +2 more sources

Discriminant validity and interrelations of conceptual and procedural knowledge in fractions and algebra: Evidence from confirmatory factor analysis

British Journal of Educational Psychology, EarlyView.
Abstract Background Conceptual and procedural knowledge are two distinct types of mathematical knowledge. Measuring them with sufficient discriminant validity is challenging because they are typically highly correlated. Prior studies have demonstrated discriminant validity of paper‐and‐pencil measures separately for fractions and algebra.
Michael D'Erchie, Claire L. Forsmann, Michael Schneider, Andreas Obersteiner   +3 more
wiley   +1 more source

Placement optimization of Multi-Type fault current limiters based on genetic algorithm

Global Energy Interconnection, 2021
The fault current limiter (FCL) is an effective measure for improving system stability and suppressing short-circuit fault current. Because of space and economic costs, the optimum placement of FCLs is vital in industrial applications. In this study, two
Guofeng Jin, Jie Tan, Lingling Liu, Chuan Wang, Tiejiang Yuan   +4 more
doaj   +1 more source