Analysis and design of high frequency gapped transformers and planar transformers in LLC resonant converters
MetadataShow full item record
This item's downloads: 5407 (view details)
The LLC resonant converter is particularly applicable for power supplies applications since soft switching is easily achieved. The dual objectives in power supply are higher switching frequencies and higher power densities. The analysis and design of the LLC resonant converter, especially the magnetic components needs further investigation and the related research has enormous practical significance. In this thesis, the design methodology for the LLC resonant converter is proposed based on the circuit analysis and the loss calculations with soft switching conditions and input voltage variations considered. The gapped transformer employed in the resonant converter is deeply investigated. The transformer was treated as the multi-winding inductor and a new design methodology is proposed. The parasitic parameters in the transformer involving high frequency leakage inductance and stray capacitance are studied, and reliable evaluation formulas are presented. With the purpose of introducing the planar transformer in the LLC resonant converter, the detailed modelling of planar transformer including the winding loss calculation, the stray capacitance and the leakage inductance for the integrated planar structure incorporating the low permeability magnetic shunt is carried out. Combing the analytical results of the gapped transformer design method and modelling of the planar transformer, the gapped planar transformer for the LLC resonant converter is designed and fabricated. Comparison with the conventional transformer shows that successful operation is possible with the low profile core.
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. Please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Seeking Gender Justice in Post-Conflict Transitions: Towards a Transformative Women's Human Rights Approach Reilly, Niamh (Cambridge University Press, 2007)This article critically examines the prospects for achieving a comprehensive vision of gender justice in post-conflict transitional contexts. It is divided into three main sections. The first reviews the gendered limits ...
Pritchard, Ruth (2015-09-21)This thesis examines power relations in the political, economic and religious spheres in local society in Ireland, so as to assess the contribution being made by a local leadership to a contemporary Irish social power ...
Sessler, Tamas (2015-05-26)TRAIL is a member of the Tumor Necrosis Factor superfamily which was shown to be able to induce apoptotic cell death in a wide variety of transformed cells, leaving normal, healthy cells unharmed. However, approximately ...