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견인력 보상기법을 적용한 PM 견인전동기의 순시토크제어에 관한 연구
최다운(Da-Woon Choi),손동혁(Dong-Hyuk Son),조윤현(Yoon-Hyun Cho) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
The power density of a PMSM is higher than that of induction motor with same ratings due to the no stator power dedicated to the magnetic field production. Because of its high power density and smaller size, the PMSM has evolved as the preferred solution for traction motor in recent years. It is essential that both the traction motor and the associated drive operate at their optimal efficiencies throughout the driving schedule. Therefore, this paper proposes tractive force predicting method which can deduce the traction force the acceleration of the vehicle under different conditions. This method improves the instantaneous torque in comparison with the general control method. The simulation and experimental results validate the proposed method for monorail vehicle application.
섬유 텐터 대기오염물질의 선택적 제거를 위한 싸이클론 및 전기 집진 오일필터의 특성
정진호(Jin Ho Jung),류승한(Seung Hwan Ryu),권순덕(Soon Duk Kwon),조윤현(Yoon Hyun Cho) 한국염색가공학회 2023 韓國染色加工學會誌 Vol.35 No.4
Among the dyeing industries, the tenter process is a process that improves the quality of fibers by drying and ironing (heat treatment) dyed fabrics, and drugs such as water repellents, antistatic agents, and fiber softeners are mainly used in these tenter processes. These drugs are vaporized in the process of treatment by high temperatures (180 ~ 230℃), and are observed in a complex form such as white smoke, oil mist, and fine dust, causing odor. To treat the complex exhaust gas at the rear end of the tenter facility, most companies operate by installing a wet scrubber and an adsorption tower alone or in parallel, but there are many problems. In particular, the insoluble oil mist at the rear end of the tenter has significantly low processing efficiency in the cleaning dust collection facility, and there is a problem in the facility by adsorption due to the occlusion phenomenon caused by the oil mist. In addition, the odor gas at the rear end of the tenter contains a lot of aldehydes, and in order to improve these various problems, a complex exhaust purification device using cyclone and electric support collector was developed. This study examined the applicability of economical and efficient technology by removing complex air pollution at the rear end of the tenter and applying improved technology than the existing technology.