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AEV 구동용 매입형 영구자석 동기전동기의 열 분포 해석
주대석(DAE-SUK JOO),조주희(JU-HEE CHO),우경일(KYUNG-IL WOO),김병택(BYUNG- TAEK KIM),김대경(DAE-KYONG KIM) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
본 논문은 농업용 전기자동차의 구동력으로 사용될 매입형 영구자석 동기전동기의 열 분포 해석을 수행하였다. 유한요소법을 기반으로 하는 열전달 해석방법을 사용하였고, 온도상승실험을 통하여 해석결과와 실험값을 비교하였다.
주대석(Daesuk Joo),홍도관(Do-Kwan Hong),우병철(Byung-Chul Woo),우경일(Kyung-Il Woo),박한석(Han-Seok Park) 대한전기학회 2015 전기학회논문지 P Vol.64 No.1
This paper presents mathematical models for high speed permanent-magnet synchronous machine. The mathematical method with two successive steps is used to estimate design parameter as well as the output power. At first, mathematical model for a linkage flux problem is employed to calculate the number of winding turns and stack length of armature core. The magnetic circuit model for an induced voltage and the electric circuit model for a current are modeled. The output powers of the electrical generator were evaluated by the mathematical techniques. The results of this mathematical methods predict the specifications of the machine and can be applied in the design stage of the electrical machine.
홍도관,주대석,김지원,우병철,구대현 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
This study investigates the experimental validation of transverse flux linear motors (TFLMs) with permanent magnet excitation andthe dynamic simulation of the developed TFLM created using the optimal design. Our research challenge is to use the developed directdrive TFLM to substitute the rack and pinion in a rotary motor because the rack and pinion lacks speed and thrust. Theelectromagnetic field characteristics are calculated using 3D finite element method analyses, and the dynamic characteristics aresimulated using mechanical balance equations. After calculating the integral parameters, the dynamic behavior of the machine issimulated. The Matlab/Simulink model for solving motion equations is used. The peak currents obtained from simulations andexperiments are very closely matched within 1%, which is the estimation error. The structural stability is evaluated using structuralanalyses that consider the load and moment of a robot. In order to reduce the structure-borne noise radiated from the main drivingframe, damping materials are applied and the sound pressure level decreases by approximately 8.5 dB(A). Finally, the repetitiveposition accuracy is considered and measured using an API laser tracker T3. The measured repetitive position accuracy is within0.1 mm at a speed of 3 m/s.