In this part you will learn how to setup the environment to calculate the self and mutual inductances for two coils system. Note that coupling factor is also extractable from this simulation.
Hi, i want to know the value of primary and secondary side leakage inductance. So, total leakage inductance is Lr = L11*(1-k^2). Then, how much primary side leakage inductance?
Please, I would like to be answered on the following questions: 1) I use Maxwell V.16 program. Does the program's version is compatible with which you use? 2) Have you used Boundary in this tutorial ? 3) Can the Eddy Current solver find a mutual inductance as well? 4) The current excitation which you are used, is it DC or AC?
@@Eng.Mohammad_Al-Fadhli I have one problem.I did follow all and ı face this problem Illegal external terminal 'Rx_1': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object. What should I do? can you describe how to solve the boundaries ?!
Hey kamyark,ı have one problem.I did follow all and ı face this problem Illegal external terminal 'Rx_1': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object. What should I do?
Before checking result, may I confirm that i have to right click the parameter>>assign>>matrix. Then i checked both Tx and Rx and then click ok. After that matrix 1 occurs. 2nd i right click the analysis>>add solution setup>>click ok. Then I right click the result >> Create magneto-static report>> Data Table. And follow your steps. After clicking New Report, no value appears under distance. :( Does anyone know why didn't i get the result. I think I miss some step.
سلام کامیار عزیز کامیار جان شما موقع تعریف ماتریس توی فیلم توضیح ندادید که چه طور باید تعریفش کرد؟ HI Kamyar, you missed how to define Matrix!! Would you please explain if there is any trick for it. Thanks
Hy Kaymar; One question, when you are organizing the data table, on category you say that “L” is inductance, there is some table with the name of the variables? I tried to find, but I couldn’t. Thanks :)
Hello Kamyar, I have a quick question, if we want to see inductance and coupling coefficient in Transient mode, what should we do? Actually, since my project is about wireless electric vehicle, I need to work on transient mode. I was wondering if you could explain to me to find the inductance and mutual coefficient in Transient mode. Thanks
HI! Hope you have the solution, and if you yes i would like to know too. And i want to know how many ways are there to calculate the inductance in Ansys, if you know. Thanks.
Hey Kamyar, I was looking for a way to make the coil rectangular ( not the cross section of the litz wire, but the way the coil is wound) instead of it being circular, any thoughts ?
Thanks, kamyar. your exiting both coils, in that which one is primary and secondary?? what I have to do to calculate inductance and mutual inductance using frequency as an excitation.
how to setup the analysis to get faster response. I am doing analyse but it is taking so muchh time. even I did not see simulation result. please tell me how to handle setup block and I want ot calculate M and ınducatances of these coil without any motion. please guide me about it.
Hii, when i try to assign parameter matrix it says ' an external terminal must border the edge of the problem region.' I checked terminal is touching the air cube that i formed. What could be the issue? please help me... Thanxx
You need to make sure it’s touching and no part of it is interesecting. To do that you can define a intersection for your excitation to be in parallel with one of the xyz planes and then when you define the region, set the padding for that axes to 0.
Have you used ansoft maxwell or ansys maxwell 3d. Please let me know, In video appears me ansoft maxwell. but in title box you used ansys maxwell. what 's its difference?
From where can I learn winding loss and coreloss simulation setup in ANSYS Maxwell all the books seems to be in chinese. If you have book tutorial anything that can help please respond!
Hello, Kamyar. I lost so many time to trying to fix this problem, so i'm asking for your help. After i defined excitations for two coils (4 terminals), i have to setup matrix. But it's produse note "No valid sources could be used for matrix setup". What can be the source of problem? How can I to fix it? I'm using Ansys Maxwell 15.0. Thank you so much
Actually, i just found out the solution. Sometimes it's not enough to using terminals defined through coordinates. After defining coordinates of point Maxwell can lose some digits after point. So terminals can only touch surface of the coil by its edge, but not by its surface. So if you going to apply subtract on intersecting bodies and only then merge them - Maxwell will recognize terminals as he should. Anyway, I'm sorry to trouble you, and thanks alot for yours lessons. They are really usefull.
Hello KAMYAR, your video was very good. now, there is a question that how can be calculated mutual inductance in hi frequency operation? so as for the RF coils in magnetic resonance imaging system?
+mohammadreza shiravi thanks. Use HFSS and s parameters for high frequency calculation. By high frequency I assume frequencies that reflection matters.
Dear sir，i have a question about that ,when i set the region matierial into water_sea ,i can't set the parameter into matrix ,and i want to know why , i know it's been long time you aren't reply anybody , if you can reply me ,it must my pressure .thank you !
Thank you Kamyar, your videos are very helpful. I believe the maxwell or hfss can provide high accuracy about the self-inductance and mutual-inductance. But, how about the quality-factor of the coil? Can maxwell of hfss give us an accurate simulated Q factor according to your experience?
Have anyone faced 'insufficient memory' problem while simulating this one? Plus it takes like more than 30 minutes, is this the normal time or it's somehow too long?
@Kamyar K Hi thanks for your nice lecture. I followed your instructions but it takes too much time and the error messages comes out. How long did you take to analyze it? My computer has i5 and 8G ram
I am running on 24G of RAM, so it might be a bit different situation. it took me 10-15 min to finish. what is the error saying? sometimes you get into this problem when by mistake you have two surfaces that were suppose to touch eachother but instead there is a minute distance between them. in that case the simulator starts meshing the minute space between two faces and it will take a heck of a time. make sure that you are defining all the spaces with numerical values or using snaps. when you are using snap make sure that it snaps right on it is place not to another snap points. I can give you the model file if you still have trouble with that. however I think it is a good practice to find the problem yourself.
Hi Kamyar, thanks a lot for your video which is very helpful! I have a quick question, if I want to set two ferrite cores at the centers of each coil. I just need to model them without any excitation on them right? (the ferrite cores are not touching the wires) Many thanks!
***** Hi Kamyar, just a quick question regarding the missing part in the video. So to find the mutual inductance, I just need to add another couple of excitation current on the secondary coil (namely current_3 and current_4 if current_1 and current_2 on the primary coil) and find the matrix result between current_1 and current_3 right?
Yes, Basically you need 2 excitations (minimum) to have mutual inductance. Note that for similar coils you can always group them or bounded them in post calculation setting and hence remove redundancy.
Thank you very much, this was very useful. I was running a similar simulation using HFSS but I ran into a problem. I was unable to control the magnitude of the current excitation and had to manually set its direction which led to another problem that I couldn't direct the excitation into the receiver coil but only along the face's sides. I would really appreciate any suggestions which you may have
Mohammad Al-Khaldi I see , you can hover over the field overlays and right click and select edit sources. There you can turn on or off the terminals and change the power of them. Hope that helps.
Hi Kamyar, I am using HFSS and I used "Edit sources" to turn one of the two terminals on for both Rx and Tx coils. I am wondering what "Solution Frequency" are you looking into. I know you said low frequency but do you have a rough value? Thanks
Faizan K. I think the solutions are valid in sub-GHz. Note that till matching and wave reflections are not playing a role you can use Maxwell. That is my take by the way.
Thanks for the reply. I don't have the appropriate licenses to run the maxwell simulation that you ran. Hfss is a bit confusing with the lumped ports and the ways to define them.
hey Fiazan, I do premium supports, with very low rate (compare to other consultant agencies), If you like I can take a look at your design and do it for you with Maxwell.
That's alright. I rather do it so that I can manipulate variables and run simulations over and over again. I'm looking into research for another 8 or 9 months so I rather get a working model on hfss than asking you every time I need to run one. Thanks for the help man.
hi, I am following your model but I am using HFSSD. While assigning the current excitation it gives an error msg" length of directed line must be greater than zero" please tell me how to fix it. also in the HFSSD, there is no maxwell 3d option so how can I set the configuration as"magnetization"? so please tell me how to configure the same model in HFSSD. Thanks
[error] Adaptive passp, process 3dnms : Insufficient memory (7:05:33 PM Dec 26, 2017) [error] Simulation completed with execution error on server: Local Machine. (7:05:34 PM Dec 26, 2017) Any comments ??? plz
Thanks Mr Kamyar, this video is very useful but i think i miss a step because on my result, data table, I am not getting any value for the dist. could someone help me with this problem
kamyar K Hi Kamyar. I'm having the same problem. I'm quite sure that i followed the steps from your video, but it seems that you're not telling how to setup the Analysis. So, when i create the magnetostetic report, i don't get any data at all, neither distance and coupling coefficients nor the L values. Any suggestions about that?
Hi, I get the following error message when the simulator tries to solve the matrix (it runs for 20 mins and then stops): "No such file: HRx.reg ". I am able to simulate and create the field plots as per part 3 but it doesn't calculate the inductance etc. Does anyone know how to fix this? Thanks
Thank you for your answer. But i mean how i can setup the distance value. My email is binh0591@gmail.com. can you send your answer to my email. Thank you so much.
*****: oh, i got it. thank you very much. I also have a question: " I know that we have to put the AC current into the transmitter coils to able to transfer the enery, so we have to provide information of amplitute, frequency, phase of AC current in Tx for Maxwell software. But in your video, i think that it is DC current, is that right? So if the Tx current is DC, why the energy can transfer? (because the DC current cannot produce the flux)
![Ansys Maxwell-How to calculate the mutual inductance [3/3]](http://i.ytimg.com/vi/PIMlEmMSQ5A/mqdefault.jpg)
![Ansys Maxwell-How to calculate the mutual inductance [3/3]](/img/tr.png)
![Ansys Maxwell-How to calculate the mutual inductance [1/3]](/img/n.gif)
Hi kamyar K：Could you please tell me how to set the Analysis Setup? The video seems didn't tell us. Thank you~
Hi, i want to know the value of primary and secondary side leakage inductance. So, total leakage inductance is Lr = L11*(1-k^2). Then, how much primary side leakage inductance?
Please, I would like to be answered on the following questions:
1) I use Maxwell V.16 program. Does the program's version is compatible with which you use?
2) Have you used Boundary in this tutorial ?
3) Can the Eddy Current solver find a mutual inductance as well?
4) The current excitation which you are used, is it DC or AC?
the current excitation is AC since otherwise you can not have inductance,
yes the boundary is hidden
3) to the best of my knowledge no
But you are used Magnetostatic Solver
Mohammad Hameed yes that is the name that they came up with. it is more trying to say that it is solving for low frequencies.
@@Eng.Mohammad_Al-Fadhli I have one problem.I did follow all and ı face this problem Illegal external terminal 'Rx_1': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object. What should I do? can you describe how to solve the boundaries ?!
@@DeebALASHGAR Hi I faced the same problem, did you solve it? Thank you!
Hey kamyark,ı have one problem.I did follow all and ı face this problem Illegal external terminal 'Rx_1': An external terminal must border the edge of the problem region and coincides with the surface of a 3D object. What should I do?
yes
Ferhat Turun
Hi exactly i have this problems
How i can fix this problem ?
Plz tell me
Tanx bro
@@zurichsee706 Did you solve the problem and how ?! because I actually have the same problem?
@@amirhosseintaghizadeh4741 Did you solve the problem and how ?! because I actually have the same problem?
why my simulation only show one coil result despite declaring excitation for all the coil terminals?
Before checking result, may I confirm that i have to
right click the parameter>>assign>>matrix.
Then i checked both Tx and Rx and then click ok.
After that matrix 1 occurs.
2nd i right click the analysis>>add solution setup>>click ok.
Then I right click the result >> Create magneto-static report>> Data Table. And follow your steps.
After clicking New Report, no value appears under distance. :(
Does anyone know why didn't i get the result.
I think I miss some step.
The parameters and analysis is all set in 7:40.
Is the video missing some ??
Hye Susan! I'm having the same problem. How did you resolve that problem? Thanks
Susan did you ever solve this?
سلام کامیار عزیز
کامیار جان شما موقع تعریف ماتریس توی فیلم توضیح ندادید که چه طور باید تعریفش کرد؟
HI Kamyar, you missed how to define Matrix!! Would you please explain if there is any trick for it. Thanks
Hy Kaymar;
One question, when you are organizing the data table, on category you say that “L” is inductance, there is some table with the name of the variables? I tried to find, but I couldn’t.
Thanks :)
Hello Kamyar,
I have a quick question, if we want to see inductance and coupling coefficient in Transient mode, what should we do? Actually, since my project is about wireless electric vehicle, I need to work on transient mode. I was wondering if you could explain to me to find the inductance and mutual coefficient in Transient mode. Thanks
HI! Hope you have the solution, and if you yes i would like to know too. And i want to know how many ways are there to calculate the inductance in Ansys, if you know. Thanks.
Hey Kamyar, I was looking for a way to make the coil rectangular ( not the cross section of the litz wire, but the way the coil is wound) instead of it being circular, any thoughts ?
How relevant is the value of current through the wires? 5A in your model. Thanks
I suppose that this value is ignored.
It depends how you define your excitation. In general the transient current is quite accurate given the excitation you have chose.
Thanks, kamyar. your exiting both coils, in that which one is primary and secondary?? what I have to do to calculate inductance and mutual inductance using frequency as an excitation.
how to setup the analysis to get faster response. I am doing analyse but it is taking so muchh time. even I did not see simulation result. please tell me how to handle setup block and I want ot calculate M and ınducatances of these coil without any motion. please guide me about it.
Hii, when i try to assign parameter matrix it says ' an external terminal must border the edge of the problem region.' I checked terminal is touching the air cube that i formed. What could be the issue? please help me... Thanxx
You need to make sure it’s touching and no part of it is interesecting. To do that you can define a intersection for your excitation to be in parallel with one of the xyz planes and then when you define the region, set the padding for that axes to 0.
hello sir,i could not understand that matrix part,how you create that,,..??
why is there excitation on both transmitter and reciever there should excitation only at transmitter side
Have you used ansoft maxwell or ansys maxwell 3d. Please let me know, In video appears me ansoft maxwell. but in title box you used ansys maxwell. what 's its difference?
From where can I learn winding loss and coreloss simulation setup in ANSYS Maxwell all the books seems to be in chinese. If you have book tutorial anything that can help please respond!
Hello, Kamyar. I lost so many time to trying to fix this problem, so i'm asking for your help. After i defined excitations for two coils (4 terminals), i have to setup matrix. But it's produse note "No valid sources could be used for matrix setup". What can be the source of problem? How can I to fix it? I'm using Ansys Maxwell 15.0.
Thank you so much
are you working on a same design ?! your terminals should touch the region. is it touching the surface of the region ?
Yes. The design is exactly the same. The terminals are touching the edge of the region
+Антон Канышев please send the design to my email at kamyark2002@gmail.com
Actually, i just found out the solution. Sometimes it's not enough to using terminals defined through coordinates. After defining coordinates of point Maxwell can lose some digits after point. So terminals can only touch surface of the coil by its edge, but not by its surface. So if you going to apply subtract on intersecting bodies and only then merge them - Maxwell will recognize terminals as he should.
Anyway, I'm sorry to trouble you, and thanks alot for yours lessons. They are really usefull.
+Антон Канышев great to hear it solved.
Hello KAMYAR,
your video was very good. now, there is a question that how can be calculated mutual inductance in hi frequency operation? so as for the RF coils in magnetic resonance imaging system?
+mohammadreza shiravi thanks. Use HFSS and s parameters for high frequency calculation. By high frequency I assume frequencies that reflection matters.
Dear sir，i have a question about that ,when i set the region matierial into water_sea ,i can't set the parameter into matrix ,and i want to know why , i know it's been long time you aren't reply anybody , if you can reply me ,it must my pressure .thank you !
did you resolve this problem????? If so please help as im facing the same issue
Thank you Kamyar, your videos are very helpful. I believe the maxwell or hfss can provide high accuracy about the self-inductance and mutual-inductance. But, how about the quality-factor of the coil? Can maxwell of hfss give us an accurate simulated Q factor according to your experience?
+Elvis Mao you need to know the AC resistance. That's eddy current effect. You have that calculated in magnetostatic
Putting the pieces together with "Unite" doesn't work. It makes more sense to combine the pieces with "Simplify".
Command path is "Model -- Simplify "
Have anyone faced 'insufficient memory' problem while simulating this one? Plus it takes like more than 30 minutes, is this the normal time or it's somehow too long?
Hi, could you tell me how to get the S-parameter in Maxwell? thank you so much
@Kamyar K Hi thanks for your nice lecture. I followed your instructions but it takes too much time and the error messages comes out. How long did you take to analyze it? My computer has i5 and 8G ram
I am running on 24G of RAM, so it might be a bit different situation. it took me 10-15 min to finish. what is the error saying?
sometimes you get into this problem when by mistake you have two surfaces that were suppose to touch eachother but instead there is a minute distance between them. in that case the simulator starts meshing the minute space between two faces and it will take a heck of a time. make sure that you are defining all the spaces with numerical values or using snaps. when you are using snap make sure that it snaps right on it is place not to another snap points. I can give you the model file if you still have trouble with that. however I think it is a good practice to find the problem yourself.
Hi Kamyar, thanks a lot for your video which is very helpful! I have a quick question, if I want to set two ferrite cores at the centers of each coil. I just need to model them without any excitation on them right? (the ferrite cores are not touching the wires) Many thanks!
yes, you don't need to define excitation for that. Just define the right material for the ferrite core and that is enough.
***** Great thanks!
***** Hi Kamyar, just a quick question regarding the missing part in the video. So to find the mutual inductance, I just need to add another couple of excitation current on the secondary coil (namely current_3 and current_4 if current_1 and current_2 on the primary coil) and find the matrix result between current_1 and current_3 right?
Yes, Basically you need 2 excitations (minimum) to have mutual inductance. Note that for similar coils you can always group them or bounded them in post calculation setting and hence remove redundancy.
Thank you very much, this was very useful. I was running a similar simulation using HFSS but I ran into a problem. I was unable to control the magnitude of the current excitation and had to manually set its direction which led to another problem that I couldn't direct the excitation into the receiver coil but only along the face's sides. I would really appreciate any suggestions which you may have
Hi,
which port are you using? is it lump port?
*****
I believe that I used a lump port but still ran into these problems.
Mohammad Al-Khaldi I see ,
you can hover over the field overlays and right click and select edit sources. There you can turn on or off the terminals and change the power of them. Hope that helps.
Hi Kamyar, I am using HFSS and I used "Edit sources" to turn one of the two terminals on for both Rx and Tx coils. I am wondering what "Solution Frequency" are you looking into. I know you said low frequency but do you have a rough value?
Thanks
Faizan K. I think the solutions are valid in sub-GHz. Note that till matching and wave reflections are not playing a role you can use Maxwell. That is my take by the way.
Thanks for the reply. I don't have the appropriate licenses to run the maxwell simulation that you ran. Hfss is a bit confusing with the lumped ports and the ways to define them.
hey Fiazan, I do premium supports, with very low rate (compare to other consultant agencies), If you like I can take a look at your design and do it for you with Maxwell.
That's alright. I rather do it so that I can manipulate variables and run simulations over and over again. I'm looking into research for another 8 or 9 months so I rather get a working model on hfss than asking you every time I need to run one. Thanks for the help man.
you are welcome;)
hi, I am following your model but I am using HFSSD. While assigning the current excitation it gives an error msg" length of directed line must be greater than zero" please tell me how to fix it. also in the HFSSD, there is no maxwell 3d option so how can I set the configuration as"magnetization"? so please tell me how to configure the same model in HFSSD. Thanks
+Ali Raza for magnetization use maxwell. HFSS is powerful in high frequency simulations and radiations.
my project is about wireless power transfer and I want to use a frequency around 14 Mhz for that what do you suggest?
as mutual inductance depends upon the frequency
+Ali Raza use eddy current. I have tutorials on that.
+Ali Raza use eddy current and then transient.
Hi, I want to know get the S-parameter in the Maxwell.
[error] Adaptive passp, process 3dnms : Insufficient memory (7:05:33 PM Dec 26, 2017)
[error] Simulation completed with execution error on server: Local Machine. (7:05:34 PM Dec 26, 2017)
Any comments ??? plz
Thanks Mr Kamyar, this video is very useful but i think i miss a step because on my result, data table, I am not getting any value for the dist. could someone help me with this problem
Make sure you are not missing a step.
kamyar K Hi Kamyar. I'm having the same problem. I'm quite sure that i followed the steps from your video, but it seems that you're not telling how to setup the Analysis. So, when i create the magnetostetic report, i don't get any data at all, neither distance and coupling coefficients nor the L values. Any suggestions about that?
@@kotsen1991 Yes I am also facing the same problem. I feel ANALYSIS SETUP needs to be configured properly.
can I get simulation file of this video. I want to run in hfss software. if you have copy for this, can you send me.
hi how i can touch with u ?
i have some problem about program and need some help ??
think you
HELLO, I can't find the magnetostatic report in my result menu.
I had the same issue. You need to perform the analysis, and then the magnetostatic report option will be available.
How should I perform the analysis? As sir KamyarK said we have to select the matrix and which tutorial should i refer to perform the analysis?
Have you solved the problem?Could you tell me exactly how to set the analysis Setup?
@@yangyu3316,,,,,it is easy to perform matrix sitting and perform analysis setup
Hi, my simulation is taking too long, what can it be? I'll appreciate any tips...
buy a new computer
Hi, I get the following error message when the simulator tries to solve the matrix (it runs for 20 mins and then stops): "No such file: HRx.reg ". I am able to simulate and create the field plots as per part 3 but it doesn't calculate the inductance etc. Does anyone know how to fix this? Thanks
Martin Tanner did you create he Matrix in the parameter section?
***** Yeah I did. If anyone else has the problem it was fixed by moving the temp file location to my thumb drive (not sure why that fixed it though).
@Kamyar K: Thank you for your video. I have a question: How can i set up parameter of distance(dis) in the dimulation process?
Yes, Just move the two coils and make it parametric. That way you can have Z distance and "XY freedom" parameters. Is it clear
?
Thank you for your answer. But i mean how i can setup the distance value. My email is binh0591@gmail.com. can you send your answer to my email. Thank you so much.
have you watch the tutorials? I am explaining in the WPT efficiency simulation series.
***** you mean "Ansoft Maxwell Basic Tutorial" (101 to 103)?
*****: oh, i got it. thank you very much. I also have a question: " I know that we have to put the AC current into the transmitter coils to able to transfer the enery, so we have to provide information of amplitute, frequency, phase of AC current in Tx for Maxwell software. But in your video, i think that it is DC current, is that right? So if the Tx current is DC, why the energy can transfer? (because the DC current cannot produce the flux)
I wonder why you don't provide the code :(
+Sumyt Kumar which code ?