3D Electro-Thermal Study for Reliability of Automotive Power Vertical MOSFET Using COMSOL Multiphysics®
T. Azoui, S. Verde, J.B. Sauveplane, and P. Tounsi
LAAS-CNRS, Toulouse, France
Department of Electronics and Telecommunications Engineering, University of Naples Federico II, Naples, Italy
In this paper 3D electro-thermal FE Model using COMSOL Multiphysics® software of power vertical MOSFET used in the automotive industry is presented. This model is used to analyze the effects of bonding wire lift off defect and to study the influence of metallization thickness and number of bonding wires on the electrical and thermal behavior of the power device. The maximum temperature ...
L. Rossini, E. Onillon, O.Chetelat, and C. Allegranza
Centre Suisse d’Electronique et Microtechnique, Switzerland
ESA/ESTEC, The Netherlands
In the frame of an ESA project, CSEM in collaboration with other partners has developed an innovative Attitude Orbit Control System concept that relies on a Reaction Sphere. We propose to use one unique magnetic bearing Reaction Sphere whose spin axis and angular velocity can be positioned by dedicated control. The design is based on a 3-D permanent magnet motor obtained with a multi pole rotor ...
Air Gap Field Analysis of Single Sided Linear Induction Motor With Time-Harmonic Finite Element Method
M.S. Manna, S Marwaha, and N. Kaur
Dept. of EIE, Sant Longowal Inst. of Engg. & Tech Longowal, Sangrur, Punjab, India
Dept. of ECE, Universal Group on Institutes, Lalaru, Punjab, India
In recent years, the single-sided linear induction motor (SLIM) has been the most suitable choice for electric vehicles of the wheel and touchless type. The reason is simplicity in manufacturing, capability in applying direct force, moving and braking and low pollution. To study the influence of air gap between the stator and mover of linear induction motor the prototype model of SLIM used as ...
Military University of Technology
The article presents the process of verification of the passive magnetic bearing by the Comsol Multiphysic program. There is shown construction of the radial passive magnetic bearing PMB60x85x20-5, which was designed in the Military University of Technology. The distribution of the magnetic flux density and the static characteristic of the bearing were estimated by the Comsol Multiphysic. The ...
P. Keutelian, A. Krishnamurthy, G. Chen, B. Ulmen, G.H. Miley
University of Illinois at Urbana-Champaign, Champaign, IL, USA
HIIPER is an experimental space propulsion device using a helicon and an IEC as a plasma generation and acceleration stage, respectively. There is an experiment in progress, but for true rapid iteration and to model the performance of the engine, COMSOL is a strong candidate for fulfilling these roles and continuing with the project until its production phase. The simulation is built with very ...
Calculation of Capacitances of Symmetrical Triple Coupled CPW Transmission Lines and Multilayer CPW Broadside Coupled Lines Balun
S. Musa, M. N. O. Sadiku
Prairie View A&M University, Prairie View, TX, USA
The accurate estimate of values of electromagnetic parameters are essential to determine the final circuit speeds and functionality for designing of high-performance integrated circuits and integrated circuits packaging. In this paper, the quasi-TEM analyses of symmetrical triple coupled Coplanar Waveguide (CPW) transmission lines and multilayer CPW broadside coupled-line balun are successfully ...
L. Graber, C. Widener, S. Smith, M. Steurer
Center for Advanced Power Systems (CAPS), Florida State University, Tallahassee, FL, USA
A research team at FSU CAPS is developing a novel fast disconnect switch based on a piezoelectric actuator for use in next-gen electric power distribution systems. COMSOL Multiphysics® software was used to optimize geometry and material selection of the disconnect switch. Current conduction, mechanical stress, and electrostatic simulations were performed to confirm that design requirements of ...
李晓南 , 刘国强 ,
利用惯性力学和电磁学，研究了一个金属小车沿着磁铁铺就的轨道做减速直线运动。其中，小车也可以看成是携带等量的磁铁剩磁，且沿着铁磁轨道减速运动。通过赋予小车一个初速度，例如100 m/s，然后再根据实际情况、赋予它一个特征密度，即小车有了一定的质量。当认为小车沿水平方向的轨道减速运动，忽略重力、空气阻力等其他一些影响因素时，小车将只受电磁的洛伦兹力的作用，而逐渐减速到零。 利用最新版的 COMSOL Multiphysics®，建模过程中，主要用到了“磁场和电场(mef)”和“全局常微分和微分代数方程(ge)”接口，涉及到的动力学和电磁学方程为 dv/dt=F/m F ⃗=∫_(V_vehicle)▒〖(J_induced ) ⃗×B ⃗dv〗 J_(i_y)=σ(v_z∙B_x-v_x∙B_z ) v 为小车即时速度，F 为洛伦兹力，J 为感应产生的涡流，v 为速度，B ...
T. J. Berger ,
 Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, USA
The XENON Dark Matter Experiment utilizes ultra-pure xenon (Xe) as a target for particle interaction in the effort to detect dark matter particles. To measure the purity of Xe, a gas purity monitor (GPM) is being developed which drifts electrons through Xe gas to detect impurities that contribute to charge attenuation. An axially-symmetric model is used to simulate the electric field generated ...
OPTIMA pharma GmbH, Schwäbisch Hall, Germany
Electrostatically excited plasma waves can induce a “plasma wind” in the surrounding media or air. The lifted object has a shape of a flying saucer, just for better illustration. A travelling plasma wave propulsion requires a pre-ionized media around the surface and a travelling electrostatic field. A simplified plasma model was used to set up an EFD (electro fluid dynamic) approach into a ...