Shielding Effect of High Frequency Power Transformers for DC/DC Converters used in Solar PV Systems

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Title Shielding Effect of High Frequency Power Transformers for DC/DC Converters used in Solar PV Systems
Author Stegen, Sascha; Lu, Junwei
Publication Title Proceedings of IEEE APEMC2010
Editor Jing Liang HE
Year Published 2010
Place of publication Beijing
Publisher IEEE
Abstract Conventional high frequency power transformers are configured without protection to avoid parasitic effects. Therefore this paper presents and investigates a FEM technique and measurement results for planar and coaxial high frequency power transformers used for DC/DC converters in photo voltaic (PV) power systems. The winding structure includes a Faraday shield between the primary and secondary windings and is designed to minimize skin and proximity effects, eddy current losses, the leakage inductance, and the inter winding coupling capacitance. Finite Element Method is employed to analyze the magnetic flux and eddy current distributions, and to accurately calculate the intra- and inter- winding capacitances based on the theory of capacitances in a multi-conductor electro-magnetic system. The two different kinds of HF transformers have been tested and experimentally simulated. The measured results demonstrate, in contrast to non shielded transformers, that the shielded transformers have achieved the expected results with a relatively small coupling capacitance, compared with the conventional high frequency transformer. This shield decreases the inter-winding coupling capacitance Cps and the leakage induction.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ISBN 978-1-4244-5621-5
Conference name IEEE APEMC2010
Location Beijing
Date From 2010-04-12
Date To 2010-04-16
Date Accessioned 2011-01-25
Language en_AU
Research Centre Queensland Micro and Nanotechnology Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Electrical and Electronic Engineering
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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