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This paper describes large-scale full-wave analyses of electromagnetic fields using numerical human body models. This is achieved by the use of the parallel finite element method with iterative domain decomposition. The numerical human body models provided by the National Institute of Information and Communications Technology (NICT) in Japan are composed of voxel data with all sides of 2mm and include...
KERI have been expanding their high power laboratory from 2011 to 2015. Expansion test category includes short time and peak withstand test as well as short-circuit test. In case of short time and peak current with stand test, test current is mainly dependent on the line impedance of secondary part of short time withstand transformer since the secondary side voltage is 1000V or 500V. Because one of...
Permanent magnet brushless DC motors used in aerospace generally have numerous qualities such as light weight, small size, and high efficiency. This means that the thermal design of those motors is very serious. In order to obtain an accurate thermal field simulation of a permanent magnet brushless DC motor, both electromagnetic and thermal fields have to be calculated in a coupled simulation. In...
Based on the concept of complementary media, a class of open invisible cloaks is proposed via embedded optical transformation. General formulations of the homogeneous parameters for linear transformation and inhomogeneous parameters for nonlinear transformation are derived. The advantage is that the cloaked object is not blinded and can exchange information with the outer region. Full-wave simulations...
This work presents an effective electromagnetic field analysis using the finite element method for high frequency transformers with litz-wire. The Joule loss for the litz-wire can be accurately determined by considering both the skin effect and proximity effect. Efficient transformers can be designed by investigating both the impedance characteristics and the heat generation. We show the analysis...
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