|3rd December 2012, 09:10 PM||#11|
Join Date: Dec 2001
Location: South Sweden
Yes, fex when doing some math on Epcos cores with the ue and ui data given one finds that the cores without gap actually have a gap of about 10-20um, which is no surprise as the force clamping the cores is not that high, and the cores are flexing a bit under load.
I guess it would be possible to lap the mating surfaces even more, but not cost effective.
One could benefit from a tiny air gap in forwards converters aswell, to reduce remanence, but at the price of higher magnetising current and probably worse voltage peaks.
Here is a few links
Runo's Power Design
And some more material:
Revision to Fundamentals of Power Electronics
listen! Can you hear that ...
Last edited by rikkitikkitavi; 3rd December 2012 at 09:12 PM.
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