Getting Started with Maxwell 3D (ANSOFT)

[matija123]

Hi, can anyone tell me how to create hysteressis loop?

 

[Fuxue Jin]

Hi, can anyone tell me how to create hysteressis loop?

In Maxwell, for soft ferrite, you cannot use BH loop in maxwell. You need define the BH curve using the simple relation B = uH, starting from 0,0. The curve (or the date set) only reside at the first quarter, positive X-Y.

 

[kaju]

hello all,
i got error

Maxwell3DDesign1 (Transient)
[error] Illegal external terminal 'CoilTerminal1': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object.
[error] Illegal external terminal 'CoilTerminal2': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object.
please give me solution

 

[gerbi]

Your coil end terminal must be on the border of analyzed region - it must be on the face of your 'region' box.

 

[kaju]

can u please give me a exact solution ?
beacuse i don't get it .

 

[gerbi]

Your object (motor, generator no matter what) must be contained inside of a 'region'. This is usually a box - 3D object with 6 faces. Your coil terminals are assigned do two faces of your coil object - at the both ends. So.. faces, to which you assign coil terminals must be on the faces of your 'region'. Not inside, not outside.. just on them, at the same surface.

In other words: modify your geometry so coil end terminals would be on 'region' surface.

 

[kaju]

this is my object

 

[Fuxue Jin]

this is my object

The surface on your 3D objecct that you apply current must be flush (in another word, must be on the same plane ) with the region boundary surface. The terminal surface cannot be contained inside the region.

In your case, you may have to extrude your terminal surface out to get to the boundary. Many cases, 3D model in Maxwell could not be the exact same as real mechanical model. If you believe making such a change will impact your final result, you have to rearrange your model or your region to fulfill the requirement mentioned above.

Current must be coming from outside the region and then going out the region. You cannot have current source included inside the region.

 

[matija123]

Hi, can someone please show to me, or explain to me how to create excitations for 24 slots stator, 3-phase, 4-pole or 2-pole, which coil to choose, how to set up coil terminals properly for 3-phase windings etc...?

 

[Fuxue Jin]

Hi, can someone please show to me, or explain to me how to create excitations for 24 slots stator, 3-phase, 4-pole or 2-pole, which coil to choose, how to set up coil terminals properly for 3-phase windings etc...?

I am sorry but the question you asked is way beyond the scope of this thread. It will be as long as writing a book.

 

[matija123]

just sitting in front of computer and trying solutions solves all problems, try it, it`s awesome ;)

 

[Izaz Ali Shha]

Royerconverter - inductive coupling of to aircoils

hi guys!

i try to calculate the efficiency of a Royer converter with two air coils (wireless power transfer) and the effects of steal or iron near to the coils. I have got a transmission frequency of 100 khz.

Which solver is the right? Magnetostaic or Eddy Current? (without steal, the coupling coefficient is nearly the same, but with a steal core it is half that.)

are the core losses included in the calculated inductive coupling coefficient?

what is your mean of gotting frequency 100 Khz?

 

[pisoj]

Hi,
I need help with coil simulation in Ansys Maxwell. I posted picture of my coil at the end of post.

• Anyway, i drew a coil as a User defined primitive polygon helix with N turns and added straight coil part after that.
• I assigned current to ends of my coil, and made current as stranded. One current goes in, other goes out.
• Drew a box around my coil, so my coil ends are on a surface of a box.
• assigned materials to coil (copper) and box (vacuum)
• clicked on Analysis and selected Add Solution Setup and clicked ok ( didnt changed anything in there)
• i validated coil and it all went ok
• after analyzing all, i think my simulation results are wrong

I tried to plot H and B as vectors, but i only got few arrows pointing from the coil on top(and they are on a coil surface only. il post it if you want or need to see what's wrong.
Any help would be appreciated as i don't know what am i doing wrong, and i don't have much experience with Maxwell, but i am eager to learn.
http://imgur.com/a/1L2si
http://imgur.com/a/6rQkH

 

[Izaz Ali Shha]

i think your every thing is ok you can increase or decrease the number of arrows...click on the field go to modified attribute where you can change thus check there every thing and see your H and B field vectors...

 

[pisoj]

Hello, thanks for answering so quickly. I tried to increase number of vectors earlier. ' d like to get full path of vectors around the coil, if you know what i mean.

I can try to post picture of what i would like to get with simulation when i get on my pc.
I could send you my model if you have time and will to spare to check it.

i think your every thing is ok you can increase or decrease the number of arrows...click on the field go to modified attribute where you can change thus check there every thing and see your H and B field vectors...

 

[Izaz Ali Shha]

ya i will try but now i am busy in making some presentation after that i will contact you.thanks

 

[pisoj]

ya i will try but now i am busy in making some presentation after that i will contact you.thanks

Thanks a lot for your effort.
I'l try to simulate it further and look for help and clues around.

Also i will post updates on simulation status, and once it is completed i will post whole procces if someon is intetested in it.

 

[pisoj]

I am finished with my magnetostatic coil simulation. I'll post it if anyone is interested, along with whole procedure.

 

[Izaz Ali Shha]

Have you solved that problem?? if not, then message me i will help you..sorry for being late

 

[pisoj]

Have you solved that problem?? if not, then message me i will help you..sorry for being late

I solved it. As i am new in Maxwell, i selected only my coil for plotting field, so naturally vectors in region around it were not visible.

But i have few questions i'd like to ask you.

1. What is the difference between Solid or Stranded option for current in Maxwell ? I assumen the difference would be visible only if working in AC field with high enough frequency.

2. I tried assigning current as a matrix in Parameters section. And if i am remembering correctly, results were the same as without assigning it in parameters section. What is the use of this assigning it through matrix?

3. If i want to do same experiment with AC current(to be more precise, i want to simulate non hompgenic fields) which solver is the best to choose from? Eddy current or?

Thanks in advance.

 

[Izaz Ali Shha]

Ans 1...in stranded field eddy current losses of the coil are not counted while in solid these are take into count...
Ans 2..No it is necessary to assign matrix it will give warning like boundary condition and excitation and 2nd thing is that you can not import this file into another software without matrix.
Ans 3...of course eddy current

 

[filip123456]

Hi.
I need to use sinosuidal voltage source, my voltage is u(t)=U*sin(wt) where U is peak voltage sqrt2*30 and w=2pi*1000hz. I need to get data of i(t). I have 3 coils in parallel. do i use voltage type on windings or external circuit?

 

[pisoj]

Hi.
I need to use sinosuidal voltage source, my voltage is u(t)=U*sin(wt) where U is peak voltage sqrt2*30 and w=2pi*1000hz. I need to get data of i(t). I have 3 coils in parallel. do i use voltage type on windings or external circuit?

I think both will work

 

[pisoj]

Ans 1...in stranded field eddy current losses of the coil are not counted while in solid these are take into count...
Ans 2..No it is necessary to assign matrix it will give warning like boundary condition and excitation and 2nd thing is that you can not import this file into another software without matrix.
Ans 3...of course eddy current

regarding 2nd answer... i am talking about the case where i assign excitation on both ends of coil - one current goes in the coil, other goes out. i tried simulating with and without applying matrix,and it worked.

 

[SmoereBroed]

Hi all,

I have the problem that maxwell 2D simulates wrong forces regarding permanent magnets.
At first I have simualted a solenoid with a permanent magnet, we build a prototyp afterwards and all forces were just half as simulated.
Afterwards we simulated just a N50 Magnet on a Steelplate and maxwell 2D still gives twice the force as the reality.
Solution type is Magnetostatic and geometry mode is cylindrical about z.
Did anyone else also had this kind of problem in the past? Did i configure something wrong?
thanks in advance
Michi

 

[pisoj]

Hi all,

I have the problem that maxwell 2D simulates wrong forces regarding permanent magnets.
At first I have simualted a solenoid with a permanent magnet, we build a prototyp afterwards and all forces were just half as simulated.
Afterwards we simulated just a N50 Magnet on a Steelplate and maxwell 2D still gives twice the force as the reality.
Solution type is Magnetostatic and geometry mode is cylindrical about z.
Did anyone else also had this kind of problem in the past? Did i configure something wrong?
thanks in advance
Michi

I did not work in Maxwell 2d, but I worked in 3d. I know it happened to me that I get different results if I select region only and generate plot, or If I select region and objects. Maybe you should try to select different selection, if you understand what I want to say.

 

[Atanu Barua]

Im designing a 4 pole PM motor in Maxwell 16. As mentioned earlier in the post, the induced voltage from "generate quick report" is just the induced voltage due to the current. I need to find the terminal voltage and the back EMF. Any help/advice is highly appreciated.
Atanu

 

[zand1000]

Hi everybody . I 've been working on ansys maxwell for last 7 years and now I can claim that I m able to solve any simulation fast and and correct .
Watch my works here
http://electechno.blogfa.com/page/english
And contact me via telegram or whatsapp by +989379371182

 

[zand1000]

Hi everybody . I 've been working on ansys maxwell for last 7 years and now I can claim that I m able to solve any simulation fast and and correct .
Watch my works here
http://electechno.blogfa.com/page/english
And contact me via telegram or whatsapp by +989379371182

 

[filip123456]

Hi. I have magnetic bearing with 3 coils, and I need to calculate magnetic force. 1. What solution type should I use? 2. Where do I input data like mass of my rotor or gravity that's pulling him? Rotor can be in motion or stationary.

Thanks

 

[comet]

Hi friends,
I am designing a 3D model of a one-phase core-type transformer in ANSOFT MAXWELL 16.0. I have a big problem in winding's excitation.

In my transformer:
N1=turns of High Voltage Winding = 88 turns (44 turns in 2 layers that every layer including 2 parallel tape),
N2=turns of Low Voltage Winding = 46 turns (46 turns in 1 layers that every layer including 4 parallel tape),

My questions are:

Q1: For External excitation, I do not know: what is "Number of parallel branches" in my design?

Q2: In assign excitation ----> coil terminal excitation, What is the "Number of conductors" in my design?

THANKS A LOT all.

 

[zand1000]

Hi friends,
I am designing a 3D model of a one-phase core-type transformer in ANSOFT MAXWELL 16.0. I have a big problem in winding's excitation.

In my transformer:
N1=turns of High Voltage Winding = 88 turns (44 turns in 2 layers that every layer including 2 parallel tape),
N2=turns of Low Voltage Winding = 46 turns (46 turns in 1 layers that every layer including 4 parallel tape),

My questions are:

Q1: For External excitation, I do not know: what is "Number of parallel branches" in my design?

Q2: In assign excitation ----> coil terminal excitation, What is the "Number of conductors" in my design?

THANKS A LOT all.

Hi
I believe you have to set conductor in primery 176 and nubmber of parallel branches 2.
And in secondary number of branchea 4 abd 184 conductor

Or ignore parallel branches and set 88, 1 , 46,1 respectively and just consider the true resistance for parallel coils .
Dear all . If I can help you on ansys maxwell specially on rotational machines please contact me on whatsapp or telwgram with +989379371182

 

[comet]

Hi
I believe you have to set conductor in primery 176 and nubmber of parallel branches 2.
And in secondary number of branchea 4 abd 184 conductor

Or ignore parallel branches and set 88, 1 , 46,1 respectively and just consider the true resistance for parallel coils .
Dear all . If I can help you on ansys maxwell specially on rotational machines please contact me on whatsapp or telwgram with +989379371182

Thanks a lot.
For "consider the true resistance for parallel coils", If I select the material of winding (such as: copper) in maxwell, It is enough?
or I should be add a resistor in external circuit?

 

[comet]

Menu Maxwell Circuit -> Export Netlist

Hi Dear,
I am designing a 3D model of a one-phase core-type transformer in ANSOFT MAXWELL 16.0. I have a big problem in winding's excitation.
In my transformer:
N1=turns of High Voltage Winding = 88 turns (44 turns in 2 layers that every layer including 2 parallel tape),
N2=turns of Low Voltage Winding = 46 turns (46 turns in 1 layers that every layer including 4 parallel tape),
My questions are:
Q1: For External excitation, I do not know: what is "Number of parallel branches" in my design?
Q2: In assign excitation ----> coil terminal excitation, What is the "Number of conductors" in my design?
THANKS A LOT.

 

[aishahzuki]

Hello every buddy.
I've modeled a linear induction motor in Maxwell3D. Selecting the "Translation Motion Type" in "Motion Setup", I face the following set of errors:
Maxwell3DDesign1 (Transient)
[error] Invalid moving objects. All moving objects inside band must form single connected region. (2:36:21 PM Nov 14, 2016)
[error] Motion setup (geometry) is not valid. (2:36:21 PM Nov 14, 2016)

These errors occur only in translation motion.
I'll be grateful if anyone helps me.

Hi. I also faced the same problem with you. Can i know did you solved your problem because i am new in translation motion type. If you already solved the problem, may I know what are the solutions that you made. I'm so grateful if you can help me because i really don't have any idea on how to solve it. Thank you in advance

 

[gerbi]

Hi. I also faced the same problem with you. Can i know did you solved your problem because i am new in translation motion type. If you already solved the problem, may I know what are the solutions that you made. I'm so grateful if you can help me because i really don't have any idea on how to solve it. Thank you in advance

[error] Invalid moving objects. All moving objects inside band must form single connected region. (2:36:21 PM Nov 14, 2016)

This means, that moving/rotating element must be contained in single element i.e. rotor must be contained in a circle slightly larger than rotor outer diameter (circle for 2D simulation, obviously). Example: in case of a induction motor when rotor has outer diameter of 100 mm while stator has inner diameter of 102 mm you need to draw a circle (in case of 2D sim.) of 101 mm (centered with rotor).