Hello guys,
As far as I know, according to the B-H curve, the way to clear magnetizing fluxes is to reduce a magnetic field strength until it reaches a "coercive force", a negative magnetic field strength in case that B is positive before and vice versa. From H=NI, at some point, we will need the current to reverse its direction to clear the fluxes.
According to this link http://www.eetimes.com/document.asp?doc_id=1273232, fig 3a and 3b shows that the two-switch forward converter's current flows only one direction. Is it right that the primary winding of the forward converter "walks" along the green path as I made in the attached picture? Since the green path clears magnetizing fluxes only once (positive coercive), will this bring any downsides to the converter compared to the full bridge converter? Will sharp falling of the fluxes be dangerous?
Thank you
BlackMelon
As far as I know, according to the B-H curve, the way to clear magnetizing fluxes is to reduce a magnetic field strength until it reaches a "coercive force", a negative magnetic field strength in case that B is positive before and vice versa. From H=NI, at some point, we will need the current to reverse its direction to clear the fluxes.
According to this link http://www.eetimes.com/document.asp?doc_id=1273232, fig 3a and 3b shows that the two-switch forward converter's current flows only one direction. Is it right that the primary winding of the forward converter "walks" along the green path as I made in the attached picture? Since the green path clears magnetizing fluxes only once (positive coercive), will this bring any downsides to the converter compared to the full bridge converter? Will sharp falling of the fluxes be dangerous?
Thank you
BlackMelon
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