Flux and winding current balancing control for a medium-frequency six-winding transformer

Solid state transformers normally include a transformer whose operating frequency is well above the usual grid frequencies. These transformers are supplied by power electronic inverters such as an H-bridge. The average value of transformer supply voltage can drift to a non-zero value which may lead...

Full description

Saved in:
Bibliographic Details
Main Authors: Sankala, Arto, Korhonen, Juhamatti, Hannonen, Janne, Strom, Juha-Pekka, Silventoinen, Pertti, Saren, Hannu, Komulainen, Risto, Strandberg, Stefan, Sodo, Nicklas
Format: Conference Proceeding
Language:English
Subjects:
Bridge circuits
cascaded H-bridges
Circuit faults
flux balance control
high frequency links
Magnetic cores
Magnetic flux
Magnetic hysteresis
multi-winding transformer
Saturation magnetization
solid state transformer
Windings
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Solid state transformers normally include a transformer whose operating frequency is well above the usual grid frequencies. These transformers are supplied by power electronic inverters such as an H-bridge. The average value of transformer supply voltage can drift to a non-zero value which may lead to saturation of the magnetic core. This paper presents an active control method to prevent saturation of a multi-winding medium-frequency transformer. The control method comprises two control loops: the first balances the flux of the transformer and the other balances the currents in different windings. Simulation results which show the feasibility of the proposed control method are shown.
ISSN:1553-572X
DOI:10.1109/IECON.2014.7048696