• The Transactions of the Korean Institute of Power Electronics
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• v.11 no.1
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• pp.56-64
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• 2006

Recently, high density power supply has been researched over the last few years. To achieve high density power supply, the series resonant converter has been steadily used. In this paper, the half-bridge series resonant converter using the integrated Inductor-Inductor-Capacitor-Transformer(LLCT) is described. The structure of LLCT is analysed by the use of Finite Element Method Magnetics(FEMM) Software. Also the experimental results are verified by the simulation based on the theoretical analysis and the 300W experimental prototype.

• Journal of the Korean Magnetics Society
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• v.15 no.6
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• pp.307-310
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• 2005

To get the spatial feature of arterial pulse, we designed spatial pulse diagnostic apparatus (SPDA) using a 2-dimensional magnetoresistive sensor array. The magnetic field distribution fur magnet may was simulated using finite element method. We recognized that the field distribution of parallel magnet mays was more sensitive and uniformed than that of perpendicular one. Also the spatial displacements of magnet array were agreed with the output signal of magnetic tunnel junction (MTJ) sensor array.

• Proceedings of the KIPE Conference
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• 2004.11a
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• pp.49-53
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• 2004

High density power supply technology has been researched over the last few years. In this paper, integrated LLCT(Inductor-Inductor-Capacitor-Transformer) structure is described for use in the half-bridge series resonant converter. The structure is analysed by means of FEMM(Finite Element Method Magnetics) and the experimental results of an U structure for a 300W converter we presented.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.41 no.2
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• pp.135-143
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• 2017

A customized CFD simulator to perform thermo-fluid dynamic simulations of an HVAC for an indoor space is presented. This simulation system has been developed for engineers studying architectural engineering, as the HVAC mechanical systems used in housings and buildings. Hence, all functions and options are so designed to be suitable that they are suitable for non-CFD experts as well as CFD engineers. A Computational mesh is generated by open-source libraries, FEMM (Finite Element Method Magnetics), and OpenFOAM. Once the boundary conditions are set, the fluid dynamic calculations are performed using the OpenFOAM solver. Numerical results are validated by comparing them with the experimental data for a simple indoor air flow case. In this paper, an entirely new calculation process is introduced, and the flow simulation results for a sample office room are also discussed.