What's wrong with my transformer model with Ansoft Maxwell

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SUMMARY

The forum discussion centers on a transformer model created using Ansoft Maxwell 3D, where the output voltage was unexpectedly low at 300 mV instead of the required 12V. The user identified a significant StrandedLoss of 350 kW, which raised concerns about the model's accuracy. After adjusting the secondary resistor to 1000 Ohms, the output voltage improved, but using a lower resistance of 5 Ohms resulted in a very low voltage output. Proper placement of coils around the core and the use of Baundarise for insulation were emphasized as critical factors in achieving the desired performance.

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lba
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Hi,

I had modeled a simple transformer with Maxwell 3D (one closed iron and 2 coils), all seems all right except the output voltage, I have only 300 mV and I must have 12V ! I join the files, if someone can help me ? A strange thing is the StrandedLoss which up to 350 kW ! where's come from this ?

V1=12V
V2=300mV
Coil1=1000 turns
Coil2=1000 turns

RegardsEdit: I have increase the secondary resistor : 1000 Ohms and the voltage is good. But when I want to place a small value for resistor (5 Ohms) for example, the voltage is very low ! someone has an idea where come from the problem ?
 

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This is not good. Coils must touch the core, they must be placed around the core and then use Baundarise - Insulating between core and coil.
 

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