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Hello Santiago,
i made a very similar simulation.
I suggest you to define 2 circuits named COIL and
COIL1 carring 5000A each and then associate one bar to COIL and the other
bar to COIL1.
Due to simmetry of coil the 2 bars have the same
lenght and the distribution of current is the same in each circuit.
You can evaluate the z component of "Force via
Weighted stress tensor" .
You can evaluate the current distribution in each
turn and total power losses.
If you need evaluate power losses for each single
turn you need to set a circuit for each turn.
If you need evaluate the radial force per unit of
lenght you can use the virtual work
principle as described in my previous post "Radial Force in axsysimmetric
problem".
Finally i suggest to use Asymptotic Boundary
Condition as described in Femm manual appendix A.3.
I added a sample file named Coil10kA.fem
Best regards
Fabio Milanesi
----- Original Message -----
Sent: Friday, March 05, 2004 7:21
PM
Subject: Re: [FEMM] Reg : Coil Turns in
serie/2conductors parallel
Hi Prem Kumar, C
Thank you for your proposal, but i am trying to calculate with FEMM the
losses for EACH conductor and not only the total losses of the coil, also the
losses in 5*2=10 conductors, because the losses are very, very different from
conductor to conductor. It is very important to calculate the losses from each
conductor!!
The model is Axisymmetric.
Thank you
Santiago Salamanca
C.Prem Kumar schrieb am 05.03.2004:
Hi Santiago,
I understand you'd like to model a coil of FIVE
turns carrying a current of 10,000Amps. I take it that the coil has two
thick strands since you are also specific about 5000Amps per turn.
If what I've understood is right this is the way to go about :
- Represent the coil overall physical cross-sectional area in your model
without bothering about the interturn space.
- If the model is Axisymmetric assign the current value
"5000*5*2" that is 50,000+ j0 as Total Current via the Circuit Properties.
Do not forget to assign it a name.
- If the model is 2D, you will have the coil represented as two
sections. Via Circuit Properties assign +50,000+ j0 as the Total Current
on the right-hand section. Give it a name. Assign -50,000+j0 on the
other section. Give it a different name.
I hope I've clarified
your doubt !!
Prem Kumar, C
femm-request@xxxxxxxxxxxxxxxxxxxxxx wrote:
Message: 3
Date: Wed, 3 Mar 2004 19:42:19 +0100
From: Santiago
Salamanca <santiago@xxxxxxxxxxxx>
Subject: [FEMM] Coil Turns in
serie/2conductors parallel
To: FEMM
<femm@xxxxxxxxxxxxxxxxxxxxxx>
Message-ID:
<W.20040303194219.25A5.1.1DAD@xxxxxxxxxxxxxx>
Content-Type:
text/plain; charset="iso-8859-1"
Dear Dr. David Meeker,
Hi all,
?How to define a coil with turns
in serie, but each turn has 2
conductos in parallel?
By Coil5Tparal i have defined a coil with 5 Turns in Serie, but
each
Turn has 2 conductors
A conductor:18*10; Conductor-Isolation:4mm,
Turn-Isolation 10mm.
The length of the coil
is:5*18*2+5*4+4+100240mm.
The circuit current 10000 A, also 5000A/conductor as "serie"
?How to
define the conductors, as Group1 and Group2??Is that all
right?
?Or
how to define it?
Thank for you help
Santiago Salamanca
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