B. A. Marmo , M. P. Snaith ,
 Xi Engineering Consultants, Edinburgh, United Kingdom
An electrostatic headphone includes many interrelated design elements that affect the frequency response of the headphone and the users listening experience. Xi Engineering Consultants (XI) partnered with Warwick Audio Technologies (WAT) to investigate the complex behavior of one-side electrostatic speakers. Xi developed a GUI that helped WAT engineers optimize their speaker using virtual tools ...
T. Müller, A. Schwenger, and H. Haase
Institut für Grundlagen der Elektrotechnik und Messtechnik, Leibniz Universität Hannover, Germany
Volkswagen AG, Germany
This paper describes the automatic optimization of an electromagnetic actuator using a genetic algorithm. The actuator modeled here is dedicated for charge changing valve actuation in internal combustion engines. In the first step of the simulation, several operating points are calculated using the script language of COMSOL Multiphysics. In order to reduce computation time, only one segment of ...
I.M. Abdel-Motaleb, K. Allen 
Department of Electrical Engineering, Northern Illinois University, DeKalb, IL, USA
The design of a RFID-enabled temperature sensor is described in this paper. In this sensor, a change in temperature causes structural beams to bend, which results in a proportional displacement of the plates of the capacitor. Plates\' displacement results, in turn, in changing the value of its capacitance. The capacitor of the sensor is coupled to the LC resonant network of a passive RFID tag. ...
M. Valentinuzzi, E. Ceccolini, D. Mostacci, M. Sumini, F. Rocchi
Montecuccolino Nuclear Engineering Laboratory, University of Bologna, Bologna, Italy
UTFISSM-PRONOC, ENEA, Bologna, Italy
The electron beam emitted backward by Plasma Focus devices is being investigated as a radiation source for IORT (Intra-Operative Radiation Therapy) applications. A Plasma Focus device is being developed to this aim. The electron beam is driven through an electron pipe made of stainless steel to impinge on a 50 ?m brass foil, where conversion X-rays are generated. Electromagnetic forces in the ...
M. A. Saucedo-Espinosa , M. Rauch , B. H. Lapizco-Encinas ,
 Department of Microsystems Engineering, Rochester Institute of Technology, Rochester, NY, USA
 Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, USA
Insulator-based dielectrophoresis (iDEP) employs arrays of electrically insulator posts in a microfluidic device to create dielectrophoretic forces that affect particle movement (Figure 1). The trapping performance of iDEP devices involves a careful balance between electrokinetics (EK) and dielectrophoresis (DEP), where EK is the superposition of electroosmosis (EO) and electrophoresis (EP). The ...
G. Sun , C. De Blasiis , O. Sekula , P. Corsaro ,
 Brugg Kabel AG, Brugg, Switzerland
The loaded underground high voltage cable generates magnetic field with industrial frequency. Depending on the current rating and cable allocation, the magnetic exposure to public area may exceed the requested limit from customer. Extra shielding should then be applied. A primary FEM study shows that aluminum plate has a good shielding effect; the installation condition of the plate can however ...
Y. Yan , S. Smolentsev , M. Abdou 
 Fusion Science and Technology Center, University of California, Los Angeles, CA, USA
Several commercial CFD companies have recently extended their codes to magnetohydrodynamic (MHD) flows. However, there are many computational challenges associated with MHD flows under the harsh fusion environmental conditions that require such codes to be carefully examined in a special range of flow parameters and geometries. Among the commercially available CFD tools, COMSOL Multiphysics, a ...
D. Lahaye, D. Cvoric, S. de Haan, and J. Ferreira
Delft Institute of Applied Mathematics, Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
Electrical Power Processing Unit Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
Fault Current Limiters (FCLs) are expected to play an important role in the protection of future power systems due to the rising levels of the short-circuit currents. The inductive FCLs, comprising magnetic cores and one or more dc and ac windings, are particularly interesting because they inherently react on the fault. The so-called open-core FCL configuration employs only one magnetic core for ...
R. Wadhwa, G. Monkman, and T. Lien
NTNU Valgrinda, Inst. for produksjons- og kvalitetstek., Trondheim, Norway
FH Regensburg, Regensburg, Germany
Magnetic grippers are commonly used for workholding in handling and assembly of ferrous metalcasted parts. The workholding force produced by the magnetic gripper is strongly influenced by the texture and form of the workpiece in contact with its surface. This work explores the optimal design of an electromagnet to handle parts of varying profile radii by increasing the magnetic field ...
AGH University of Science and Technology, Kraków, Poland
Introduction: The dual electromagnet configuration of Active Magnetic Levitation system (AML) where the electromagnets are locate opposite to each other, constitutes and single axis of the Active Magnetic Bearing. The same configuration can be used to test the single electromagnet AML controller. A single electromagnet AML was modeled and simulated with COMSOL Multiphysics. The modeling and ...