Input-series and output-series connected modular single-switch flyback converter operating in the discontinuous conduction mode

This study proposes a modular isolated dc–dc converter, based on the input-series and output-series connection of flyback converters operating in discontinuous conduction mode, as an alternative to provide higher voltage capability for medium-voltage applications (1–10 kV), from low-voltage semicond...

Full description

Saved in:
Bibliographic Details
Published in:IET power electronics 2016-07, Vol.9 (9), p.1962-1970
Main Authors: Pagliosa, Mauro André, Faust, Rafael Gomes, Lazzarin, Telles Brunelli, Barbi, Ivo
Format: Article
Language:English
Subjects:
Architecture
control scheme
Converters
DC‐DC power convertors
Design analysis
discontinuous conduction mode
dynamic operation
Dynamical systems
Electric potential
Electronics
frequency 40 kHz
input‐series connected modular single‐switch flyback converter
intrinsic voltage‐balancing mechanism
low‐voltage semiconductors
modular isolated dc‐dc converter
output‐series connected modular single‐switch flyback converter
passive components
power 3 kW
Semiconductors
small‐signal ac modelling
steady‐state operation
total output‐voltage controller
Voltage
voltage 1 kV to 10 kV
voltage 600 V
voltage control
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study proposes a modular isolated dc–dc converter, based on the input-series and output-series connection of flyback converters operating in discontinuous conduction mode, as an alternative to provide higher voltage capability for medium-voltage applications (1–10 kV), from low-voltage semiconductors and passive components. The proposed architecture allows the modular system to operate with a simplified control scheme thanks to an intrinsic voltage-balancing mechanism. The voltage-balancing mechanism is investigated by theoretical analysis, both for steady-state and dynamic operations. A small-signal ac modelling of the architecture is developed to design the total output-voltage controller. To experimentally verify the proposed technique, a laboratory prototype system with three single-switch flyback converters, with 3 kW output power, 600 V dc input and output voltages, and 40 kHz of switching frequency was built.
ISSN:1755-4535
1755-4543
1755-4543
DOI:10.1049/iet-pel.2015.0935