Title :
Novel ac winding resistance model of integrated magnetics in switched-mode power supply
Author :
Lu, Zengyi ; Chen, Wei ; Zhu, Yongfa ; Yang, Dan
Author_Institution :
Coll. of Electr. Eng. & Autom., Fuzhou Univ., Fuzhou, China
Abstract :
Integrated magnetics has been popularly used to improve the power density, but the winding loss mechanism becomes more complex and hard to understand for its versatile magnetic functions. Therefore, a novel ac winding resistance model of integrated magnetics in switched-mode power supply is presented in this paper. It will be more intuitive and suitable to reveal the winding loss mechanism of the integrated magnetics which have both transformer and inductor functions. The model is illustrated with the integrated magnetics in forward-type converter and the coupled inductor in voltage regulator. With the understanding of the proposed resistance model, the measures to reduce the ac winding loss of integrated transformer can be taken by balancing the transformer component winding loss and the inductor component winding loss.
Keywords :
inductors; switched mode power supplies; transformer windings; AC winding resistance model; inductor functions; integrated magnetics; magnetic functions; power density; switched-mode power supply; transformer; winding loss mechanism; Circuit faults; Couplings; Electric resistance; Flyback transformers; Frequency; Inductors; Magnetics; Power electronics; Power transformers; Switched-mode power supply; ac winding loss; coupled inductor; forward-type transformer; integrated magnetics;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543635