Getting Started with Maxwell 3D (ANSOFT)

[eddyrooney87]

Thanks gerbi,

I already did the band object. I have no idea where it goes wrong with my simulation. I give it another try. Many thanks for you help.

 

[gerbi]

Double check it. Verify if the band object is big enough to contain all objects during motion.

 

[pkelecy]

Eddy,

Just to be clear, the band should enclose all the moving objects, but none of the stationary objects. Also, since models with motion use the transient solver, you may (probably will) need mesh operations to get a good mesh for good results (the adaptive mesher only works for static models). What type of phenomena are you trying to simulate? Is the model 2D or 3D?

 

[eddyrooney87]

Hi pkelecy,

Thanks for your advice. I am simulating a linear actuator in vertical motion. This is a 3D model simulation. As for mesh, I have set the mesh operation as suggested. But, still no-go for my simulation. Need to figure out what the problem.

Thanks,
Eddy

 

[gerbi]

What is the error code ?

 

[Electropioneer]

Hi guys!

I have tried to do the analysis of Magnetic Rotational Actuator, described step by step in Maxwell's example files. I am using Maxwell 14.
I have completed the whole process, but when i try to do the simulation i get:

[error] Failed to load 'Matrix1' solution. (12:24:29 AM Sep 09, 2013)
[error] Failed to evaluate calculation 'Matrix1.L(Current_1,Current_1)'. (12:24:29 AM Sep 09, 2013)
[info] A variation (ang='15deg') has been requested on machine Local Machine (12:24:29 AM Sep 09, 2013)

I first thought that I made the mistake in the process, however, i noticed that there is a file in maxwell's examples that already had this model done by ansoft, and all the parameters were identical to the file i made. I tried to run a solution but i got the same errors. Failed to load matrix1 solution.

Can anybody please help me with this error? I am quite new to maxwell.

 

[Electropioneer]

I tried the same file on the PC with new version of maxwell, and it was working just fine.
So, i guess it might have been a bug in the software.

On the different note, I wish maxwell would give some more info on the errors it gives out, not just, "failed to evaluate calculation". That might actually be useful, but then again,they might not be able to charge an arm and a leg for 3 hours seminar. Their training prices are nuts...

 

[WaXy]

Hello,

I have a question about Maxwell 2D Transient. If you choose the Core Loss, Maxwell Core Loss calculated via:

Kh is the hysteresis core loss coefficient,
Kc is the eddy-current core loss coefficient, and
Ke is the excess core loss coefficient.

Obviously then calculated losses due to eddy currents (Kc).

If I am under the Set Eddy Effects, select the same part where I count Core Loss, Shall I then get double losses due to eddy currents

 

[Fuxue Jin]

Where do you get these info? I don't think Maxwell do any of those Kh, Kc and Ke.

Hello,

I have a question about Maxwell 2D Transient. If you choose the Core Loss, Maxwell Core Loss calculated via:

Kh is the hysteresis core loss coefficient,
Kc is the eddy-current core loss coefficient, and
Ke is the excess core loss coefficient.

Obviously then calculated losses due to eddy currents (Kc).

If I am under the Set Eddy Effects, select the same part where I count Core Loss, Shall I then get double losses due to eddy currents

 

[WaXXyy]

In Material Properties these coefficients can be entered.

Setting: Set Core Loss and mark eg stator, and mark Defined in Material.

According to this, Maxwell Core Loss calculated as determined coefficients.

 

[Fuxue Jin]

I see it. This is for steel. I guess you need to Set Eddy Effects in order to have the correct current distribution, but I am not sure.

 

[shuowang]

Hi guys,

I am new to here. I am trying to use transient solver for a inductive power transfer simulation. The simulation time and save field was set from 0 to 0.2 ms. The simulation was finished, however only data between 0-0.104 s were saved, the data between 0.105-0.2 ms were shown n/a. Does anyone what might be the reason for this situation? Thanks!

Shuo

 

[WaXXyy]

I think that simulation is not converged. Check the number of finite elements and settings of Solver

 

[shuowang]

Thanks, There are 69873 meshes. What can I do with the setting of Solver?

 

[safuan]

hye all

im a new,, i have a some problem in ansoft maxwell 3d,,

1) what mean about this error when I am analyze the program

Maxwell3DDesign1 (Magnetostatic)
[error] There are multiple disconnected solution domains. This is not allowed in magnetostatics. (11:17:49 PM Nov 14, 2013)
[error] Simulation completed with execution error on server: Local Machine. (11:17:49 PM Nov 14, 2013)

2) i need to use the permanent magnet in my project,, so to assign material what is the name for the permanent magnet i need to select? then, how to assign boundary, excitation, parameter for this material,,

hope anybody can help me to solve my problem,, :( tq all

im also attach my project picture

 

[gerbi]

Hello

"Multiple disconnected domains" means that you need to create a region (Draw->Region). This operation creates a space where your experiment will take place.
You need to assign a permeant magnet.. well.. there are multiple materials. This is up to you to select one of them depending on design (yes, NdFe30 is one of them).
The only thing you need to select for permeant magnet is polarisation of magnet (after you select a material go into its properties - you'll find there XYZ components of magnitute that describes polarisation of magnet).

 

[safuan]

ok tq so much bro gerbi,, now i have solve the problem,, tq

 

[safuan]

hello all

i still have a new error about 3d coil,, i don't know how to setup excitation/boundary for current or else,, so what need i do for this part ( 3d coil )

this is my error when I am try to setup excitation

Maxwell3DDesign1 (Magnetostatic)
[error] Verify conduction path 'Path1': For any conduction path that has current density excitation(s) specified, current density terminal(s) should also be specified and vice versa. (11:44:05 PM Nov 17, 2013)

pls help me,, tq all :)

 

[safuan]

helo all,, pls help help me,,

 

[dhivyashailu]

hi i need to design a transformer with carbon nano tube wires instead of copper wires..can anyone say how can i do using ansoft maxwell

 

[firdausa]

ansoft maxwell 2d

hello,
I am designing a switched reluctance motor with double layered winding using ansoft maxwell 2d.Can anyone help me with connecting an isolated supply in between each phase windings in the circuit editor part.
Thanks.

 

[hussain_aamir]

Help Required

I want to design a linear generator with square shape;
Based on previous work i have found that finite element analysis of tubular (circular shape) is done in cylindrical (2D RZ plane). But when the shape is square in what coordinate system we can do finite element analysis. Please help me regarding this.

 

[BaPF]

[Error] Failed to evaluate calculatoin Matrix1.L(...)

Hey guys,
by solving a parametricSetup, the error
[error] Failed to evaluate calculation 'Matrix1.L(Current_0,Current_0)'
appears in the Message Manager.

I am using Maxwell 16 and simulating a model with two flat coils.

Using Maxwell on a different computer doesn't solve my problem. Though, the licenses are being distributed by a central server.

The problem occures whenever i copy a model in the Project Manager and add it to the same and/or different opened project to use the same settings but alter the number of turns of the flat coils.

On my way to find the error, i discovered that the problem occures whenever i run the original simulation to check the first parameter steps and use clean stop. After the completed abortion, the copy of that model always happens to have the Error mentioned above.

By a non-aborted model, the problem hasnt accured, so far!

Since i am going to use many altered copies of one orginal one, i want to reinsure the problem will not appear troughout all the copies.

Does anyone has had the same problem and can confirm my suggested error´s source?

I appreciate your help.

 

[Xinos123]

Hi,

I don`t know if I`m in the right section to explain my problem..
First of all, I would like to visualize eddy currents. So I create 2 solids (coil and solid looks like a `U` compose od ferrite) in solidwoks and I imported them in MAXWELL 3D.

When I decided to apply a current on a surface in the coil, I had an error when I created a surface... The operation is in the tutorial is : Modeler»Surface»section..

I attached 2 pictures to show my problem..

Thank`s

 

[hussain_aamir]

Hi everyone,
I want to plot cos waveform in maxwell. can anyone give me the formula. Thanks

 

[creactivee]

sorry, I am new here, , how to display the value of the flux Intensity of each point from a position to another position?

 

[hussain_aamir]

if you want to plot it; just draw a line in air gap and follow
results>create field report>rectangular plot>geometry>select the drawn line>plot

 

[creactivee]

if you want to plot it; just draw a line in air gap and follow
results>create field report>rectangular plot>geometry>select the drawn line>plot

thanks , but after I tried it, the value (mag_B Tesla) was too high , there are any another setting to do to get precision value??

 

[hussain_aamir]

thanks , but after I tried it, the value (mag_B Tesla) was too high , there are any another setting to do to get precision value??

based on my knowledge there is another method; that is using calculator but for getting this you go through maxwell guide that has complete how to use calculator explanation

 

[BaPF]

I want to see how my B field changes with changing Ampere with respect to the coordinate.
Therefore i use an rectangular plot along a non-model line to see the change of my B field.
Is there a way to calculate my B field with respect to my coordinate and several Ampere values?
Since i don't have the time to set an ParametricSetup up for all Ampere combinations with all the other changing geometrical components, i am glad for any hint.

 

[godly2010]

Hey guys,

im currently doing a project its about "numerical estimations of induced and contact current in human body in contact with a car". I am in need of a Human model to use as an example for maxwell and also how do you import drawing/designs to maxwell? Thanks in advance!

ps. sorry about my english

 

[godly2010]

Is it possible to import a MATLAB mesh into Ansoft? If so, what is the method to do this? Thanks in advance

 

[BaPF]

regarding exporting field data for further use in matlab, i would like to ask for your help.
To compare accuracy of two same geometrical models, but different settings for the mesh and error%,
i need to generate a data sheet of all the scalar quantities of my B field (probalby a lot of data) and their
location in the coordinate system.
Afterwards i like to calculate the differences of each value in the matrices in MATLAB to find my delta of the field values of my two models.

Thanks for any help!

 

[jerrard]

Regarding a transformer-like structure:
If I have two coils in the "Eddy Current" analysis i see that it is possible to define a specific current in the first one (with a specific peak current and frequency). Then Maxwell can calculate the current passing through the second coil (after setting on the eddy effects selcetion for this coil). Is it possible to define the phase difference between the two currents...?

Thanks a lot for any help!

 

[gerbi]

No, the difference comes (when the second current is induced) from configuration of your model.
If you want to change phase difference between currents you have define both currents.

 

[jerrard]

Gerbi thanks a lot for your quick answer.
In the case where I just define the current in the first coil, the current in the second coil is considered to be in phase with the current in the first one...?

 

[gerbi]

In case of Eddy Current solver ? Phase of current depends on how you define it - please take a look at Assign->Current Excitation (you define there name, value, phase, solid or staranded and direction).

Note one more thing: if you want to observe currents induced in secondary winding there is no need to activate "eddy currents" setting for secondary winding.

 

[jerrard]

What I would like to do is to observe the current induced in the secondary winding after applying a current in the primary winding (let's say a current with a zero phase and amplitude of 50A). In this case, I can obtain the amplitude of the current in the secondary (after setting the eddy effects on for the secondary winding). Yet I cannot see any way of obtaining the phase of the current in the secondary... (I think that a phase difference might be expected between the current of the secondary and primary winding)

 

[BaPF]

Hey jerrard,
as i work on a similar problem, i can tell you for the case of a fully compensated system for coil number two, the induced electric voltage is U= M* dI(1)/dt.
Therefore the phase in the difference in current phase is 90 degree, because you simply derive the sinusoidal current in the first coil.
This information might be good for further investigation. Unfortunately, I cannot help you with your specific problem directly

 

[mwvivi]

Hello everyone

I'm a new user.
I would like to share experiences with someone who is in software Maxwell analyzed magnet motors where the rotor and stator permanent magnets.
Question: Is it possible to be permanent magnetic excitation circuit (not current or power) and how to parse.

 

[isha]

Simulation of core and coil of a transformer

Hey everyone,

I am beginner in Maxwell. I am trying to plot the flux distribution in a transformer core. For starters, I am just trying to simulate a very simple geometry of a core and a single coil in the Transient solver,

I try to solve the problem by using the steps from the Maxwell user guide [Transformer Core loss example] but I am unable to plot either the mesh or any other field overlays once the design has been solved.

I am attaching the geometry for reference.

I use following steps:

So i create a section of the coil and make it a coil terminal with 3 turns
Then I add a winding and attach the terminal to it.
I give the winding a voltage excitation, in a stranded form. The expression is Vpeak*(1-exp(-50*time))*cos(2*pi*50*time)

 

[kadar]

the maxwell

can the maxwell work the simulator electrical coupling thermal and magnitic

 

[hussain_aamir]

Copper loss procedure

Hi Everyone,
I am working on synchronous generator, i want to know the procedure of how to calculate copper loss in ansoft maxwell (transient solver). Please explain me. Thanks

 

[hussain_aamir]

How to find frequency of any signal in Ansoft Maxwell

Hello Everyone,
I want to know in Ansoft Maxwell how we can determine the frequency of any signal or waveform.
Please describe me.
Thanks

 

[Fuxue Jin]

In transient solver, the mesh is only initial mesh. The field is not saved unless you specify to save them in the Analysis setup.

When you want to plot field overlays, you have to specify the time moment that has the field saves as defined in the above Analysis setup.

Hey everyone,

I am beginner in Maxwell. I am trying to plot the flux distribution in a transformer core. For starters, I am just trying to simulate a very simple geometry of a core and a single coil in the Transient solver,

I try to solve the problem by using the steps from the Maxwell user guide [Transformer Core loss example] but I am unable to plot either the mesh or any other field overlays once the design has been solved.

I am attaching the geometry for reference.

I use following steps:

So i create a section of the coil and make it a coil terminal with 3 turns
Then I add a winding and attach the terminal to it.
I give the winding a voltage excitation, in a stranded form. The expression is Vpeak*(1-exp(-50*time))*cos(2*pi*50*time)

 

[blueiced]

Hello everyone,
I am really new to Maxwell and I'm having problems simulating a simple transformer for a junior university project.

http://i.imgur.com/11kSlKw.jpg - a simple drawing for reference. I made the actual drawing in AutoCAD 3D and I want to simulate some things in Maxwell.

Steps I take:
1. Import the 3D model
2. Assign all materials (copper and steel with custom B/H graph)
3. Create an external circuit in Maxwell Circuit Editor (actually there I create 3 separate circuits in one drawing with the windings and other elements and voltage sources - I don't connect them magnetically (mutual Inductance) because the coils are 3 and the block for inductance is 2 windings only but they import successfully in Maxwell).
4. I create sections for the coils on my drawing via Modeler > Surface > Section and Modeler > Boolean > Separate Bodies
5. Select all sections and right click > Assign Excitation > External Circuit (and I add the circuit)
I saw these steps in a tutorial.

My problems:
1. How do I specify the number of turns for the coil (for example 300?). Since I am using an external circuit do I have to click the sections and 'Add Coil Circuit' to specify turns to different coils?
2. Do I have to set up any currents because I give the voltage and some resistance elements in the external circuit and Maxwell should calculate as needed?
3. I get this error for the transformer body (probably about it or because of wrong coil design in external circuit?):
http://i.imgur.com/NP6s9gd.png
Do I have to specify anything else for the body other than material and that it is laminated? Maxwell doesn't give me the option to create a section. When I try it creates a section in the same plane as the section of the coils and it looks like a lamination sheet instead of a cross-section of the body?

Would really appreciate your help! There are not many tutorials and some are not full.

 

[Fuxue Jin]

Simple thing first,

For the error message, second one is normal. You are using transient solution, so it tells you that only initial mesh will be used, meaning the mesh may not be fine enough, the result may not be that accurate, but, generally acceptable.

For the first error, do you have a region defined?

For others, I recommend not using the external circuit, just specify the excitation source as current. Run the simulation and see if it works. Once you sort out all the bugs, you can then introduce the external circuit as the excitation source.

For transient solution, you specify the turns on the terminal (number of conductors). For Magnetostatic, you specify in the Matrix properties.

Hello everyone,
I am really new to Maxwell and I'm having problems simulating a simple transformer for a junior university project.

http://i.imgur.com/11kSlKw.jpg - a simple drawing for reference. I made the actual drawing in AutoCAD 3D and I want to simulate some things in Maxwell.

Steps I take:
1. Import the 3D model
2. Assign all materials (copper and steel with custom B/H graph)
3. Create an external circuit in Maxwell Circuit Editor (actually there I create 3 separate circuits in one drawing with the windings and other elements and voltage sources - I don't connect them magnetically (mutual Inductance) because the coils are 3 and the block for inductance is 2 windings only but they import successfully in Maxwell).
4. I create sections for the coils on my drawing via Modeler > Surface > Section and Modeler > Boolean > Separate Bodies
5. Select all sections and right click > Assign Excitation > External Circuit (and I add the circuit)
I saw these steps in a tutorial.

My problems:
1. How do I specify the number of turns for the coil (for example 300?). Since I am using an external circuit do I have to click the sections and 'Add Coil Circuit' to specify turns to different coils?
2. Do I have to set up any currents because I give the voltage and some resistance elements in the external circuit and Maxwell should calculate as needed?
3. I get this error for the transformer body (probably about it or because of wrong coil design in external circuit?):
http://i.imgur.com/NP6s9gd.png
Do I have to specify anything else for the body other than material and that it is laminated? Maxwell doesn't give me the option to create a section. When I try it creates a section in the same plane as the section of the coils and it looks like a lamination sheet instead of a cross-section of the body?

Would really appreciate your help! There are not many tutorials and some are not full.

 

[Pedro Almeida]

I just started to experiment with this software and this is probably a dumb question.
I've played a bit with maxwell 2D, and was able to draw the flux lines of the resulting solution (I'm using magnetostatic) in the field overlay section.
But when I moved to maxwell 3D I wasn't able to do this, the option was missing in the field overlay menu.
Isn't there an option to draw flux lines along a given plane in maxwell 3D? I may be missing something, but after a good amount of searching both in the software options and in the internet, I found no clue.
This threat was already useful to me, thanks everybody!

 

[Fuxue Jin]

You need first select a plane (xy, yz or xz), or create a plane and select it. Then go to Field Overlay to plot H B filed distribution on that plane.

 

[Pedro Almeida]

Yes, I know I can plot H or B fields. But the thing is, if I am on maxwell 2D, and I go to Field Overlays>Fields I can choose from A H B J Energy or Other. The option I want Flux_Lines is under the A fields.
On the other hand, if I am in maxwell 3D and if I go to the same menu Field Overlays>Fields the options are H B J Energy or Other. No A fields and therefore no Flux_Lines option... I hope I'm making myself understandable.