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李璨敎 단국대학교 대학원 1983 學術論叢 Vol.7 No.-
This paper is to study the problems in the system of wage in Korea and to present their solutions. It is stipulated in Article 30 of the Constitution of Republic of Korea that the Government is to make efforts on the increase of employment and the guarantee of reasonable wages, and that working conditions are to be ordained by the Labor Standard Law to ensure human dignity. The controversial points concerning the wage in Korea are as follows: (1) For most of workers the present wage is low. (2) Wage differentials either by education and or by sex are too large. (3) The government policy on wage has some defects, For the improvement of the present wage system in Korea: (1) The wage problems should be solved jointly by employers and employees. (2) The Government should adopt more reasonable wage policies. (3) Both the employers and workers should improve their ways of thinking.
부상력 및 기동 토오크를 고려한 Bearingless SRM의 기본 설계
이찬교(Chan Gyo Lee),오주환(Ju Hwan Oh),권병일(Byung il Kwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Bearingless Switched Reluctance Motor(SRM) have combined characteristics of SRM and magnetic bearing. Production of radial force for rotor shaft magnetic suspension is explained with differential stator windings. Bearingless SRM is simple structurally because the permanent magnet does not exist and bearing does not take the influence at the environment because it does not exist and has strong torque, and loss of bearing by bearing current has the advantage not to exist. In this paper, a design method of bearingless SRM for suspension power and starting torque is proposed. The design model is implement by maxwell.
프린징 자속을 고려한 베어링리스 SRM 회전자극 설계 및 특성분석
이찬교(Chan-Kyo Lee),오주환(Ju-Hwan Oh),신광철(Kwang-Chul Shin),권병일(Byung-Il Kwon) 대한전기학회 2010 전기학회논문지 Vol.59 No.1
In this paper, a novel Bearingless Switched Reluctance Motor(BLSRM) with the shoe rotor pole in order to minimize the torque ripple and the suspension force ripple at an overlap position is proposed. For reduction the torque ripple and the suspension force ripple at an overlap position, the fringing flux is used for the main flux. This configuration of the rotor pole results in more average torque with high suspension force. In addition, this paper is compared the transient characteristics using the inductance look-up table. The torque, radial force and flux density are analyzed by finite element method.