A Multiple-Winding Magnetics Model Having Directly Measurable Parameters
نویسندگان
چکیده
A general model of the mul t ip l e winding transformer and coupled inductor i s presented, in which all parameters can b e directly measured. The approach is suitable f o r all winding geometries, and s i m p l i f y i n g approximations can be easily made. This model can be applied in determination of c r o s s regulation, current ripple, and s m a l l s i g n a l dynamics of multiple-output dc-dc conver ter s . An experimental four-winding f l y b a c k transformer example is investigated. Observed leakage inductance parameter measurements are interpreted physically, and are related t o observed flyback converter waveforms. It i s also shown that the model correctly predicts small-signal dynamics.
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