Hi, :
Execuse me, May I ask a question about "SMPS transformer behavior in B-H hysteresis curve" ?
I had uploaded a picture file at:
.png
This is due to the ideal to run simulation to show the B-H behavior of a SMPS transformer ,so that I need to know it before do the simulation.
But I got the question which I can't understand is that, in the (b) picture it says the behavior of forward & flyback are both belonged to first-quadrature and has the hysteresis which repeats one time while transformer run one duty cycle.
The question is the flyback is normally stored the energy in the primary winding while the power switch is ON,then release the energy in OFF duration, mapping to the B-H curve, when energy stored in the peak value, the B-H curve will point to the most right point and run back to left in OFF duration (release energy in secondary winding).
But the forward transfer the energy in the same time (ON state), how to describe/explain it has the same behavior of the flyback which has the?repetitive B-H hysteresis curve ?
I mean in the forward topology, the flux-linkage of primary and flux-linkage of secondary is direction-inversed, wouldn't it be equally eliminated in B-axis ,how could this be described in the B-H curve ?
Thank you for any opinion.
Best regards.
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