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What should I do 3 phase Generator 2D in Model library
Posted Aug 22, 2010, 11:29 p.m. EDT 7 Replies
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This example is the single phase Gen.
If the single phase Gen can be three phase Gen, How to improve or apply it
Vi=NN * L (integration(Ez.dA)) / A
This eq from
And the Eq can be use with three phase or not
What is the principle to definte Vi
Thanks you in advance
i sas
Hello I Sas
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i'm simulating also 3 phase motor (U, V and W) and using this
ViU= mod1.intopUp(L*rmm.Ez/A)-mod1.intopUn(L*rmm.Ez/A)
mod1.intopUp ist integration of U phase wire that goes -p for positive, -n for negative
ViV=mod1.intopVp(L*rmm.Ez/A)-mod1.intopVn(L*rmm.Ez/A)
ViW=mod1.intopWp(L*rmm.Ez/A)-mod1.intopWn(L*rmm.Ez/A)
it's just worked (it solved. i havent evaluate the result, but maybe...
regards
akmal
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if you have 3 phases at 120° dephasing, you probably have a "phasor" term and should consider the real and imaginary parts, no ?
--
Good luck
Ivar
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I am trying to simulate the 3-phase induction motor, but i do not know how to deal with the phase A, B , and C
can you help me please
Thanks
Natheer
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it is a perfect example from Floris van Kempen. please try to evaluate it.
www.ch.comsol.com/community/forums/4-1/thread/19133/
www.ch.comsol.com/community/forums/4-1/download/file/7889/pm_motor_no_solutions.mph
regards
akmal
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I have COMSOL 3.5, and I think the model is made on COMSOL 4.1.
I can not open it !!!!
Is there any idea ???
Also I am trying to simulate the induction machine, but the software can not mesh one part.
Can you help me how to mesh it manually ?? or any idea to overcome this problem.
you can write to me directly to my email
natheer80@yahoo.com
Regards
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I have already solved the problem of mesh
but still i do not know exactly how i should deal with phases ?!!!
I tried to inject the windings by current density J varies with time , is that correct ????
Please reply to this
Natheer
natheer80@yahoo.com
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I am simulating 3D axial flux permanent magnet generator using comsol 4.3, i am having trouble in plotting time dependent voltage curve. In model library there is a 2d generator example which has used formula below for the induced voltage in the windings:
"mod1.intop1(L*rmm.Ez/A)- mod1.intop2(L*rmm.Ez/A)"
where, L is length of generator, A is area of coil
But I donot understand this formula, how this works??
In my opinion both the terms are equal and result must be zero.
Please, anyone can explain how this work.
Thank you.