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