Results 41 to 50 of about 110,012 (311)

Temperature Dependence in the Jiles–Atherton Model for Non-Oriented Electrical Steels: An Engineering Approach [PDF]

, 2018
High operating temperatures modify the magnetic behavior of ferromagnetic cores which may affect the performance of electrical machines. Therefore, a temperature-dependent material model is necessary to model the electrical machine behavior more ...
Stephane Clenet, LOWTHER, David A., Abdelkader Benabou, CLENET, Stephane, HUSSAIN, Sajid, BENABOU, Abdelkader, David A. Lowther, Sajid Hussain   +7 more
core   +1 more source

A Passive Battery Management System for Lead-Acid battery [PDF]

EPJ Web of Conferences
One of the dangerous issues that can appear when working with batteries is the imbalance of the cell. To overcome this problem, the battery management systems (BMS) can provide balancing by extracting or adding charge according to the needs.
Pop Adrian Augustin, Inte Razvan, Oprea Claudiu, Ruba Mircea   +3 more
doaj   +1 more source

Semi-physical demagnetization model for the temperature dependency of permanent magnets in electrical machines

AIP Advances, 2023
Losses during the operation of electrical machines heat up permanent magnets which in turn changes their demagnetization behavior. An elevation of permanent magnet’s temperature usually correlates to a decreasing remanence and coercivity.
Alexander Kern, Nora Leuning, Kay Hameyer   +2 more
doaj   +1 more source

Transient System Model for the Analysis of Structural Dynamic Interactions of Electric Drivetrains

Energies, 2021
In electric drivetrains, the traction machines are often coupled to a gear transmission. For the noise and vibration analysis of such systems, linearised system models in the frequency domain are commonly used.
Marius Franck, Jan Philipp Rickwärtz, Daniel Butterweck, Martin Nell, Kay Hameyer   +4 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Numerical Investigations of Air Flow and Heat Transfer in Axial Flux Permanent Magnet Electrical Machines [PDF]

, 2010
In this study an investigation of heat transfer in air cooled Axial Flux Permanent Magnet (AFPM) electrical machines is carried out. Efficiency of electrical machines is strongly influenced by an effective cooling which is provided by forced convection:
AIROLDI, GIOVANNI
core  

Vectorial formalism for analysis and design of polyphase synchronous machines [PDF]

, 2003
A vectorial formalism for analysis and design of polyphase synchronous machines without reluctance and saturation effects is described. We prove the equivalence of such a machine with a set of magnetically independent machines, which are electrically and
BOUSCAYROL, Alain, HAUTIER, Jean-Paul, E. Semail, J.-P. Hautier, A. Bouscayrol, SEMAIL, Eric   +5 more
core   +1 more source

Multi-stage framework for optimal incorporating of inverter based distributed generator into distribution networks

Scientific Reports
Recently, hydrogen-based distributed generators (DG) have gained significant attention for modern energy generation systems. These modem DGs are typically outfitted with power electronics converters, resulting in harmonic pollution.
Shrouk A. Hamza, Mariem Y. Yousef, A. A. Ali, Said M. El Masry, Magdi A. Mosa   +4 more
doaj   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

General modeling of the windings for multi-phase ac machines [PDF]

, 2010
This paper, which deals with the winding modeling of ac multi-phase machines with a regular distribution of the stator slots, details an original matrix modeling of the stator winding.
CHARPENTIER, Jean-Frederic, SCUILLER, Franck, E. Semail, J.-F. Charpentier, SEMAIL, Eric, Semail, E., F. Scuiller, Scuiller, F., Charpentier, J.-F.   +8 more
core   +1 more source