Different behaviour between voltage circuit coupling VS current supply in windings

Ronan CORIN

Good evening,

I am modelling a kind of no-load transformer : 2 limbs, 2 windings, and 4 grain oriented sheets stacked in each limb, with a step-lap joint. Neumann boundary conditions at the end of each limb.

If the supply of the windings is directly done with a current (in winding's volume region properties), the path of the current in the winding seems correct.

 

But if the supply is done with a coupling circuit (voltage source followed by two coupling components, one for each winding), the path of the current in one of the windings seems wrong.

(The colors are not the same between these two pictures, but the physical properties are).

 

Do you have an idea of the reason of the difference of behaviour between these 2 cases, please ? Is it related to a problem with coupling circuit, or anything else ?

 

I cannot post the files in attachment, the total files size is 96Mo.

 

Thank for your help,

Ronan

asoualmi

Hi,

I checked the results that you get, for both cases are correct. The difference is due to the phase angle (see attached PDF file).

Hope this will help.

Best regards.

asoualmi

Hi,

In Flux when you supply the device by a current source, we directly reach the steady state regime. but if you supply the device by a voltage source, in this case there is a transient region before reaching the steady state regime.

In your case which application you use (Transient, steady state).

To share the project, try to delete the results, the mesh and send it as zip format.

Best regards.

Ronan CORIN

Hi,

Thank you for your reply and your explanation.

I use a harmonic application.

The files are attached in this message. There are two .FLU folders, one for each project (current source and voltage source).

Best regards.

asoualmi

Ronan CORIN said:

Hi,

Thank you for your reply and your explanation.

I use a harmonic application.

The files are attached in this message. There are two .FLU folders, one for each project (current source and voltage source).

Best regards.

Thanks, I will check and keeep you informed.

 

Best regards.

asoualmi

Hi,

I checked the results that you get, for both cases are correct. The difference is due to the phase angle (see attached PDF file).

Hope this will help.

Best regards.

Ronan CORIN

Hi,

Thank you for this explanation. Finally, that was a simple issue.

Hope other non experienced Flux users like me will save time if they face this situation.

Best regards.

asoualmi

You are welcome.