I am referring the book Transformer and Inductor Design Handbook[4E] by Colonel Wm.T.McLyman.
In which he has emphasised to calculate the current density, rather than using the thumb rule value of 3-6 Amps per millimetres squared.
Here is my design file .
- Problem is Frequency is low as well as my secondary current is also very low, such low that, skin effect wire area is coming to be far more than the wire area coming from calculated current density.
- Another problem is window Utilization Factor is not coming to in and around 0.29 within the designed ferrite core[ETD39].
- If i keep the current density calculated value , i have to use bigger core, to bring down K_u = 0.29.
- If i use thumb rule and use current density a higher value , i can fit even in smaller core like [ETD29].
- Temperature rise is way too little [1.4110]. I don't know if smaller core will increase it.
What should i do?