| Title |
A New Flyback Converter Using the Cross Flux of Transformer |
| Authors |
Bok-Jae Ku ; Hyo-Seon Kim ; Sung-Jun Park ; Seong-Mi Park |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.9.073 |
| Keywords |
Flyback Converter ; Magnetic Circuit ; Magnetic Circuit Sharing ; Cross Magnetic Flux |
| Abstract |
This research proposes a new type of flyback converter topology based on magnetic circuit sharing. The proposed flyback topology uses a transformer involving shared magnetic flux, and its characteristic is magnetic flux cancelation by cross magnetic flux in the magnetic flux-sharing part of the core. The new topology aims to reduce the volume of transformer by reducing the cross section of the core. Compared to conventional converters using only 1 transformer, its circuit configuration involving the serial input and parallel output of 2 flyback coils allowed increased converter insulation strength. In addition, the adoption of interleaved switching method achieved the improvement of output voltage ripple, while magnetic circuit sharing reduced by 50% the cross section of core where magnetic circuit was shared. |