A New Interleaved Series Input Parallel Output (ISIPO) Forward Converter With Inherent Demagnetizing Features

Author

Jin, Taotao ; Zhang, Katherine ; Zhang, Kan ; Smedley, Keyue

Author_Institution

Univ. of California, Irvine

Volume

23

Issue

2

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

888

Lastpage

895

Abstract

A forward converter of interleaved series input and parallel output (ISIPO) structure is proposed in this paper. Theoretical analysis indicates that by using two auxiliary diodes and the unique architecture, the proposed ISIPO forward converter can realize natural magnetizing reset, the leakage and magnetizing energy in the transformers can be recycled, and the voltage stress on each switch is clamped at . In addition, by parallel connection of the transformers, the output rectifier and filters can distribute power losses and thermal stresses of the transformers and semiconductors, and the interleaved operation can reduce the current ripple in output capacitors. All these features make the proposed forward converter suitable for dc-dc converters with high input voltage, high output current, and high power density. The theoretical analysis is verified by a 1000 W experimental prototype.

Keywords

DC-DC power convertors; capacitors; demagnetisation; rectifiers; auxiliary diodes; current ripple; dc-dc converters; demagnetizing features; interleaved operation; interleaved series input parallel output forward converter; leakage energy; magnetizing energy; natural magnetizing reset; output capacitors; output rectifier; parallel connection; power 1000 W; power loss; thermal stress; voltage stress; Current Sharing; demagnetizing; forward converter; interleaved; interleaved series input and parallel output (ISIPO);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2007.914813

Filename

4431874