Title :
A multiple-winding magnetics model having directly measurable parameters
Author :
Erickson, Robert W. ; Maksimovic, Dragan
Author_Institution :
Power Electron. Center, Colorado Univ., Boulder, CO, USA
Abstract :
A general model of the multiple-winding transformer and coupled inductor is presented, in which all parameters can be directly measured. The approach is suitable for all winding geometries, and simplifying approximations can be easily made. This model can be applied in the determination of cross-regulation, current ripple and small-signal dynamics of multiple-output DC-DC power converters. An experimental four-winding flyback transformer example is investigated. Observed leakage inductance parameter measurements are interpreted physically, and are related to observed flyback converter waveforms. It is also shown that the model correctly predicts small-signal dynamics
Keywords :
DC-DC power convertors; approximation theory; inductors; transformer windings; transformers; coupled inductor; cross-regulation; current ripple; flyback converter waveforms; four-winding flyback transformer; leakage inductance parameter measurements; multiple-output DC-DC power converters; multiple-winding magnetics model; multiple-winding transformer; simplifying approximations; small-signal dynamics; winding geometries; Couplings; DC-DC power converters; Flyback transformers; Geometry; Inductance; Magnetic analysis; Predictive models; Reduced order systems; Shunt (electrical); Solid modeling;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703254
