Materials are grouped according to physics interfaces in comsol. In this paper, a 3d fe model for the commercial electromagnetic sensor system using emspectm technology, has been developed using the acdc module in comsol multiphysics. Comsol software, i used 2d magnetic field physics mf and multiturn coil. And a comsol 2d axissymetric simulation with the same parameters coil length, number of turns, inner and outer diameter, wire gauge using multilayer coil of the acdc module. Note that while comsol employees may participate in the discussion forum. Why the coil geometry analysis results is wrong comsol. Automatic coil excitation is now available for 3d coils of arbitrary shape including toroid, helicoid, and saddle.
Jun 25, 2014 electromagnetic coils simulations with quickfield. In this blog post, we introduce a procedure to model the behavior and dynamics of an electromagnetic plunger that consists of a multiturn coil, magnetic core, nonmagnetic guider, and magnetic plunger. After adding magnetic fields as physics to that component i created two domain multiturn coils and switched the coil type to circular because i want the current flowing along the edge you can see in my attached image file. For assigning materials to the multi turn coil, the iron core and the sphere, three materials are chosen from the builtin materials group. Comsol conduction heat transfer example 38 heat loss through an insulated steam pipe duration. Able to utilize ferromagnetic components as flux conduits. Lumped parameter analysis for homogeneous multi turn coil in. This discussion is about an older version of the comsol multiphysics software.
If you do not hold an onsubscription license, you may find an answer in another discussion or in the knowledge base. Warning your internet explorer is in compatibility mode and may not be displaying the website correctly. In the comsol software, i used 2d magnetic field physics mf and multiturn coil. Comsol multiphysics is a crossplatform finite element analysis, solver and multiphysics simulation software. Image made using the comsol multiphysics software and is provided. Within multi turn coil 1 multi turn coil coil excitation voltage voltage 1vsin2pi50hzt. On the simulation of electromagnetic forming process of. Please login with a confirmed email address before reporting spam. The 3d model of the multicoil icp configurations with the asymmetric features is using comsol multiphysics software to. Aug 19, 2015 from single turn and multi turn coil arrangements to coil groups. The model consists of a multi turn coil made of copper placed on top of the single strand fiberswoven mat and the carbon fiber reinforced plastic cfrp plate with an air gap of 12.
Evaluation of electromagnetic heating of a composite. The holding force in close and open position is being computed based on the maxwell surface stress tensor. Hi there, i want to simulate the magnetic field which is generated by multi turn coil by. It allows conventional physicsbased user interfaces and coupled systems of partial differential equations pdes. You can see that in the model which i attache below. How i can simulation of magnetic field generated by ac. I found quite big differences between theory and simulation for the. The multiturn coil domain feature is being used for the actuators coil modeling. In reality this is one coil since they should be connected in series. Did you know that designing electrical systems and devices is faster and cheaper with simulation. Comsol access comsol multiphysics modeling software.
Hello, i have designed a simple curved saddle coil pair in comsol directly by using some blocks and boolean operators. Hello, i am working on multi turn coil for our model. Parameters which we have measured are impedance z, angle theta, series inductance ls, series resistance rs for a. Ray heating and multiturn coils crosssection in acdc applications. A demo model of a 50 hz ac coil wound around a ferromagnetic linear core. Quickfield is very powerful tool for electromagnetic coil simulation. The acdc module of comsol multiphysics software is used to model the electromagnetic response. Solving team problem 7 with the acdc module comsol blog.
In the model, domains are used to assign materials to the objects. The model requires the design module to fillet the edges of the block. This motion can be used to move an external load such as closing electromagnetic valves and closing or opening electromagnetic relays. Excerpt from the proceedings of the 2014 comsol conference in cambridge 2. In the comsol software, i used 2d magnetic field physics mf and multi turn coil. Increased depth of penetration in multicomponent conducting and ferromagnetic structures compared with conventional eddy current methods. Electromagnetic coils are used in many applications where the electromagnetic field needs to be generated or sensed. Coil groups 2d and axisymmetry current conservation. But in coil their is only current as input so how to change the input or generate the required magnetic field in comsol. I want to model a simple multi turn multi layer copper coil solenoid in comsole multiphysics. My task is i want to find coil inductance and ac resistance at different frequncies. Multiturn coil above an asymmetric conductor plate comsol. Reference edge current direction in a multiturn coil domain.
The combination of comsol products required to model your application depends on several factors and may. The model is intended as a tutorial to show how to create a relatively complex geometry and set up the new multi turn coil features for the simulation. If you still need help with comsol and have an onsubscription license, please visit our support center for help. Comsol multiphysics also has an interface to the matlab technical computing. Multiphysics modeling in the electromagnetic levitation and.
The coils were modelled as multiturn coils, with the drive coil connected to a 1a current acsource same excitation as used in analytic model. A multiicp system can be used to increase the plasma uniformity, which makes it possible to increase the processing area and provide additional variables for controlling the plasma. Multiturn coil winding around a ferromagnet comsol. The 3d model of the multi coil icp configurations with the asymmetric features is using comsol multiphysics software to.
After adding magnetic fields as physics to that component i created two domain multi turn coils and switched the coil type to circular because i want the current flowing along the edge you can see in my attached image file. I found quite big differences between theory and simulation for the inductance value more than 40% for some exemples. You can connect your model with the circuit using multiturn coil domain and select as coil excitation circuit. In all cases, we set the outer boundaries of the model area at. Apr 20, 2017 i am wondering how comsol calculates the cross section area of coil geometries. The physics of magnetic fields was used in the model and the multiturn coil. Electromagnetic actuators simulation and optimization 2d static simulations. The combination of comsol products required to model your application depends on several. My coil is without core and is made as simple rectangle with size 0. Plasma scaling leads transition from 2d to true 3d models. Should i decide the coil outer diameter based on the coil inner diameter, wire diameter and coil height. For assigning materials to the multiturn coil, the iron core and the sphere, three materials are chosen from the builtin materials group. Knowledge base when changing the license file on the license server, comsol multiphysics loses contact to the license server. The complex coil winding geometry can be easily modeled using a multiturn coil.
May 15, 2014 heres our geometry of the copper coil and aluminum plate. The sinusoidally varying current in the coil is 1 aturn. About the singleturn coil domain, multiturn coil domain, and coil group. Watch this video to learn how to model a multiturn coil using comsol multiphysics and the acdc module. If i model them as two coils i get one negative inductance and one positive. Comsol webinar modeling coils and electric devices youtube. The physics of magnetic fields was used in the model and the multiturn coil feature was assigned to the exciting and sensing coils. I am wondering how comsol calculates the cross section area of coil geometries. But for our model we need to generate magnetic field of 65 kam with frequency of 0.
Multiturn coil and biasing with permanent magnet in comsol software. In all cases, we set the outer boundaries of the model area at a distance 10 times the outer coil radius. The molten volume, which is a domeshaped on top by the em confinement force, is drawn downwards through a watercooled sleeve formed by the segments using a mechanical withdrawal system 4. There are two homogenized multi turn coils surrounded by metal parts. The geometry of the multiturn coil 2,742 turns placed asymmetrically over the conductor plate with a hole. Discussion closed this discussion was created more than 6 months ago and has been closed. The magnetic potential vector a has a zero magnitude as an initial value. Dear colleagues, i need to modeling ac coil to inducting a ac magnetic field for my project. Heres our geometry of the copper coil and aluminum plate. The model is intended as a tutorial to show how to create a relatively complex geometry and set up the new multiturn coil features for the simulation. I am trying to compare the inductance calculation using 4.
We have fabricated such coil and measured the lumped parameters of such coil which agilent impedance analyzer in our lab. Modelling coils system for generating homogeneous magnetic field. Comsol provides an ide and unified workflow for electrical, mechanical, fluid, acoustics and chemical applications. In 2d electrical circuit and magnetic fields works fine together.
So heres the structure, and i will attach my mph file below. Lumped parameter analysis for homogeneous multi turn coil. Problem is at 100khz it is giving good results but when it comes to 1mhz it is giving bad results. Within multiturn coil 1 multiturn coil coil excitation voltage voltage 1vsin2pi50hzt. Helmholtz coils are used in mri, spectroscopy, and equipment calibrations.
The same excitation can also be used for single turn coil as well. Hi, im trying to calculate the magnetic field due to two pairs of orthogonal coils one pair is circular and there are no issues. If i set for example a cylinder in comsol as a homogenized multiturn coil, i am given the option to set the coil geometry. In there i can select the edge to set the direction of the rotation of the current. The coil can be excited with voltage input as a function of time as shown in the attached model. Part library and material library with 1400 materials. The comsol discussion forum covers a wide variety of simulation topics. If you do not yet have a comsol access account, please create one now. To download the mphfiles, log in or create a comsol access account that is associated with a valid comsol license. The pickup coil was excited by a 0 a ac source open circuit configuration. I use comsol for induction heating application but i dont know what is the best. Only with the same comsol version you can open my files.
Comsol access is a service we provide to our users and prospects. Comsol multiphysics is very user friendly software, easy to operate and gives. Sep 26, 2014 the coil can be excited with voltage input as a function of time as shown in the attached model. Available options are singleturn coil and multiturn coil.
The identification of the latter is accomplished by taking into account the changes in the coil impedance. Calculating mutual inductance for different wire coil arrangements is easy with comsol multiphysics simulations. By submitting this form you agree to have your information shared with, and be contacted by, addlink software cientifico. Part 4 of this 5part series continues the stepbystep demonstration of coil modeling in the comsol software by showing how to add multiple turns to the primary and secondary coils in the electrical circuit model you will learn how to introduce an array of turns to a coil and see. If i set for example a cylinder in comsol as a homogenized multi turn coil, i am given the option to set the coil geometry. How i can simulation of magnetic field generated by ac current. Use of comsol acdc module to model a em sensor deployed to.
A multi icp system can be used to increase the plasma uniformity, which makes it possible to increase the processing area and provide additional variables for controlling the plasma. Aug 26, 2017 and a comsol 2d axissymetric simulation with the same parameters coil length, number of turns, inner and outer diameter, wire gauge using multi layer coil of the acdc module. You can connect your model with the circuit using multi turn coil domain and select as coil excitation circuit. The coil current calculation functionality available in previous versions of comsol multiphysics. Browse the threads and share your ideas with the comsol community. Modeling mutual inductance using comsol multiphysics. Aug 01, 2017 heres why you should use comsol multiphysics to simulate them. This will help to improve an analysts workflow to design simulation applications to be used by their team and nonexperts. From singleturn and multiturn coil arrangements to coil groups. On the simulation of electromagnetic forming process of tube. In this blog post, we introduce a procedure to model the behavior and dynamics of an electromagnetic plunger that consists of a multi turn coil, magnetic core, nonmagnetic guider, and magnetic plunger.
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