What's wrong with my transformer model with Ansoft Maxwell

AI Thread Summary
The transformer model in Ansoft Maxwell is producing an unexpectedly low output voltage of 300 mV instead of the desired 12V, despite having both coils with 1000 turns. An unusually high StrandedLoss of 350 kW is also noted, raising concerns about the model's accuracy. Increasing the secondary resistor to 1000 Ohms improves the voltage, but using a lower resistance of 5 Ohms results in a significantly reduced output. The coils are correctly positioned around the core, and insulation is applied, but the underlying issue remains unclear. Further investigation into the model's parameters and configurations is needed to resolve these discrepancies.
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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