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나민수(Min Su Na),조제욱(Je Uk Cho),이기영(Ki Young Lee) 한국IT마케팅학회 2014 한국IT마케팅학회 학술대회 Vol.2014 No.1
Recently, due to the abnormal temperature, a more efficient heating and cooling functional products is being developed. These heating and cooling functional products (air conditioner, heater, warmer, etc.), there are no temperature control of the product. So this paper, measuring the temperature through the LM35DZ temperature sensor and the solid state relay, has been design and implementation to control the supply of the outlet. Measuring the temperature through a LM35DZ temperature sensor and Arduino Uno board and, Control the power of the outlet through solid-state relays and, this allows the user to enable the efficient room temperature holding.
전기강판의 가공 및 포화를 고려한 IPM 모터의 철손 해석
하경호(Kyung-Ho Ha),김지현(Gi-Hyun Kim),김재관(Jae-Kwan Kim),이선권(Sun-Kwon Lee),나민수(Min-Su Na) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
This paper proposes a core loss analysis method to obtain high accuracy prediction by using Multi-curve representing magnetic properties of a electrical steel in Finite Element Analysis (FEA). Generally, the magnetic prosperities of the electrical steel are measured by Epstein Method based on the international standards that are not good sufficient to predict motor performances. The method only aims to grade products in steel companies The magnetic properties of actual stator core is highly different to those given by steel companies due to the fact that stacking effect, shearing stress, nature anisotropy of electrical steels are not taken into account. In this paper, the magnetic properties are variously measured by three measuring devices, and then the several BH curves and BW curves obtained are used to analyze the core loss of a IPM. The BH curve in the high magnetic field are extrapolated using the mathematical formulation with the maximum saturation magnetic polarization measured