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RISS 인기검색어
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- 저자 : 한득영(Deukyoung Han) (검색결과 4 건)
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유한 요소 도구를 이용한 NPT IGBT의 열 특성 해석
류세환(Sehwan Ryu),이명수(Myungsoo Lee),원창섭(Changsub Won),안형근(Hyungkeun Ahn),한득영(Deukyoung Han) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
As the power density and switching frequency increase, thermal analysis of power electronics system becomes imperative. The analysis provides valuable information on the semiconductor rating, long-term reliability. In this paper, thermal distribution of the Non Punchthrough(NPT) Insulated Gate Bipolar Transistor has been studied. For analysis of thermal distribution, we obtained results by using finite element simulator, Ansys and thermal distributions form experiments.
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안형근,한득영,황광철 건국대학교 산업기술연구원 1999 건국기술연구논문지 Vol.24 No.-
컴퓨터 그래픽 이론에 입각하여 3DS 파일내의 데이터는 구석점과 면 텍스쳐에 대한 정보를 담고 있으므로 이를 추적 분석하여 사용자의 간단한 조작으로 이를 변경할 수 있도록 하였다. 또한 3DS STUDIO가 동화상을 제작하는 기능에서 물체 선언부와 동작 선언부를 분리·결합함으로써 라이브러리를 구축, 상이한 물체라 하더라도 기존에 제작된 움직임을 연결시킴으로써 새로운 동화상을 생성시킬 수 있도록 하였다. As the LED or LCD technology has been developed, if we use LED or LCD pannel, more wide clolor range coluld be obtained as CRT monitor. Specially, full color LED display is developed by high brightness blue LED. It can be applicable to display pannel with a long-life, wide visible angle and high brightness. A display pannel shows the images of CRT monitor performed by the main computer. Graphic application in the main computer is therefore more important in the market. Conventional 3DS STUDIO, one of graphic softwares, has difficulties in manipulating and understanding the specific terminology so that one may need more time to learn it. We, therefore, developed graphic application which can recycle the conventional 3D images by creating or editing the image easily.
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권주남,신훈범,안형근,한득영 건국대학교 산업기술연구원 2004 건국기술연구논문지 Vol.29 No.-
We have explained process and electrical characteristics of a step-down Rosen type piezoelectric transformer for AC-adapter. When the electric voltage is applied to the driving piezoelectric vibrator polarized in the thickness direction, then output voltage is generated at the generating piezoelectric vibrator polarized in the thickness direction due to the piezoelectric effects. Output voltage and current from a single-layered piezoelectric transformer were measured under the various condition of loads and frequencies It was shown from experiments that output voltage has increased and resonance frequency has changed according to various resistor loads. Output current has decreased inversely proportional to the loads
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이정석,류세환,이명수,한득영,안형근 건국대학교 산업기술연구원 2004 건국기술연구논문지 Vol.29 No.-
As the power density and switching frequency increase, thermal analysis of power electronics system becomes imperative. The analysis provides valuable information on the semiconductor rating, long-term reliability and efficient heat-sink design. In this paper, thermal distribution of the Insulated Gate Bipolar Transistor Module has been studied with different isolations and heat sink materials. For analysis of thermal distribution, we obtained results by using finite element simulator, Ansys.
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