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Characteristic Analysis of Integrated Magnetic Component for Forward Converter
T. Shiraishi,F. Hattori,M. Ishitobi,E. Hiraki 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
A power converter is required to be compact, lightweight and low loss, and the various approaches have thus been carried out so far. For a forward converters (FC) used for step-down of medium-capacity, many papers that aims at its miniaturization by coupling the isolation transformers and the output reactors have been reported. Each method of the integrated magnetic components (IMC) shows that the position of the windings and the gaps are different and the total volume becomes smaller than that before coupling. However, it is not clear which method should be adopted to obtain the desired performance and what kind of characteristics it can judge from. Therefore, we classified the FC’s IMC from the way of the coupling and investigate the operation of the FC depending on the winding of the IMC in this paper. As results from simulation and experimental analysis, the winding position suitable for the FC, the way of reducing the volume of the magnetic component and suppressing the ripple of the input/output current became clear.
Rü,mmeli, Mark H.,Rocha, Claudia G.,Ortmann, Frank,Ibrahim, Imad,Sevincli, Haldun,Bö,rrnert, Felix,Kunstmann, Jens,Bachmatiuk, Alicja,Pö,tschke, Markus,Shiraishi, Masashi,Meyyappan, M.,B&u WILEY‐VCH Verlag 2011 ADVANCED MATERIALS Vol.23 No.39
<P><B>Abstract</B></P><P>Graphene has a multitude of striking properties that make it an exceedingly attractive material for various applications, many of which will emerge over the next decade. However, one of the most promising applications lie in exploiting its peculiar electronic properties which are governed by its electrons obeying a linear dispersion relation. This leads to the observation of half integer quantum hall effect and the absence of localization. The latter is attractive for graphene‐based field effect transistors. However, if graphene is to be the material for future electronics, then significant hurdles need to be surmounted, namely, it needs to be mass produced in an economically viable manner and be of high crystalline quality with no or virtually no defects or grains boundaries. Moreover, it will need to be processable with atomic precision. Hence, the future of graphene as a material for electronic based devices will depend heavily on our ability to piece graphene together as a single crystal and define its edges with atomic precision. In this progress report, the properties of graphene that make it so attractive as a material for electronics is introduced to the reader. The focus then centers on current synthesis strategies for graphene and their weaknesses in terms of electronics applications are highlighted.</P>