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Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Designing of End-winding Corona Protection of Generators by Help of Simulation

M. Wei[1], S. Grossman[1], J. Speck[1]
[1]Institute of Electrical Power Systems and High Voltage Engineering, Technische Universität Dresden, Dresden, Germany

The job of designing end-winding corona protection (ECP) system is one of the very important and complex phases for insulation configuration of high voltage rotating machines. This complexity stems on one hand from the highly nonlinear characteristics of the ECP material and on the other hand from the coupled multiphysics phenomena of the involved performance evaluation. Simulation based ECP ...

RFID-Enabled Temperature Sensor

I.M. Abdel-Motaleb[1], K. Allen [1]
[1]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. ...

Electric Resistance Welding Process in Tube Manufacturing: Comparison Between a Numerical Model and a Set of Plant Trials - new

C. Cincunegui[1], P. Marino[1], D. Tieppo[1], E. Martinez[1]
[1]Tenaris, Campana, Buenos Aires, Argentina

In welded tube manufacturing, the electric resistance welding (EW) process begins with a coiled plate of steel with appropriate thickness and width to conform the produced tube. The strip is pulled through a series of rollers that gradually cold conform it into a tubular shape. The edges of the cylindrical plate come together forming a V. The strip edges are heated with a high frequency power ...

Probe Type Permanent Magnet Flowmeter

V. Sharma, S. Narmadha, S.K. Dash, R. Veerasamy, B.K. Nashine, K.K. Rajan, and P. Kalyanasundaram
IGCAR, Kalpakkam, Tamil Nadu, India

Prototype Fast Breeder Reactor (PFBR) is a 500MWe, sodium cooled, pool type, mixed oxide (MOX) fuelled reactor. Sodium flow measurement in various loops of the reactor is of prime importance from the operational and safety aspects. To measure the flow of electrically conducting sodium in large secondary circuit pipes, probe type permanent magnet flowmeters (PTFM) are used. PTFM works on the ...

Field-Circuit Coupling Applied to Inductive Fault Current Limiters

D. Lahaye[1], D. Cvoric[2], S. de Haan[2], and J. Ferreira[2]
[1]Delft Institute of Applied Mathematics, Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
[2]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 ...

Parametric Model Of An Air-Core Measuring Transformer

D. Herceg
Faculty of Technical Science, Novi Sad, Serbia

Power grid voltages and currents may be distorted due to presence of harmonics. Measurements of such voltage with harmonics may be performed using newly developed instrument with a small air-core transformer based probe as the input unit. The probe must be shielded against unknown external electromagnetic fields. At the same time, the probe must remain linear throughout the range of frequencies. ...

Electro Thermal Performance Prediction of Radio Frequency Ablation System for Efficient Cancer Treatment

C. Thiagarajan[1], V. Gnanasekar[2]
[1]ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka, India.
[2]Perfint Healthcare Pvt. Ltd, T.Nagar, Chennai, India.

Cancer causes significant human deaths. Radiofrequency ablation is an encouraging procedure for cancer treatment. The objective is to demonstrate the multiphysics simulation methodology. This paper summarizes the problem , governing equations, methodology, assumptions, simulation results and discussion related to the thermal performance prediction of radio frequency ablation on a homogeneous ...

Analysis of Dielectrophoretic Force by Using COMSOL

Taewoo Lee[1]
[1]Department of Biomedical Engineering, Yonsei University, Seoul, South Korea

Dielectrophoresis is a phenomenon in which a force is exerted on a dielectric particle when it is subjected to a non-uniform electric field. In this research, we analyze dielectrophoretic (DEP) force using a geometry containing two electrodes, one with SiO2 and one without, with a gap between them. The relevant governing equations include the DEP force, the electrohydrodynamic and corresponding ...

Design and Analysis of an Electrostatic Precipitator for a Diesel Particulate Filter - new

S. Manoj[1], R. Giri[1], S. Selvakumar[1]
[1]Rajalakshmi Engineering College, Chennai, Tamil Nadu, India

Gaseous exhaust of different industries contains dust particles of different chemical precipitates that are harmful for the environment. Electrostatic Precipitators are very often used in industries like power plant to filter their gaseous exhaust and to prevent the atmosphere to being polluted. Electrostatic Precipitators are very efficient in dust particle collection from the flue gas. ...

Optimization of a Rotor Shape for Spherical Actuator with Magnetically Levitating Rotor to Match Octupole Field Distribution

M. Sidz[1], R. Wawrzaszek[1], L. Rossini[2], A. Boletis[3], S. Mingard[3], K. Seweryn[1], E. Onillon[2], M. Strumik[1]
[1]Space Research Centre of PAS, Warsaw, Poland
[2]CSEM Centre Suisse d’Electronique et de Microtechnique SA, Neuchâtel, Switzerland
[3]Maxon Motor AG, Sachseln, Switzerland

The use of a reaction sphere as an actuator used by satellite Attitude Control System was proposed over twenty years ago. In principle this concept assumes the use of a single reaction sphere which can be accelerated in any direction instead of a set of reaction wheels. The solution discussed in this work has been proposed and patented by CSEM company. Contrary to conventional ball bearing ...