http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Wei Li,Jiang Lu,YoungWoo Jeong(정영우),ChangSeop Koh(고창섭) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
A novel solving technique has been developed to analyze the dynamic characteristics of high speed Thomson-coil arc eliminator. The electromagnetic repulsion actuator based on Thomson-coil is taken as the driving part of the arc eliminator, due to which, the opening and closing time is quite short compare to other type actuators. The electromagnetic repulsion actuator is composed of one repulsion plate and two fixed coils, corresponding to the opening coil and closing coil, respectively. The new solving technique is derived based on the equivalent electric circuit model of the system which is set up by dividing the repulsion plate into multi segments using adaptive segmentation method. This solving technique is applied to the dynamic characteristic analysis of electromagnetic repulsion actuators in high speed Thomson-coil arc eliminators. The calculation results are testified by the FEM calculation results and experiment results.
정환명(Hwanmyoung Jeoung),연제욱(Jaewook Yeon),최재호(Jaeho Choi),고창섭(Changseop Koh) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper presents a S-FES(Superconducting magnetic bearing Flywheel Energy Storage System) for the purpose of replacing battery used to store the energy. Especially, the design elements of FES, such as the bearing, wheel material, and power converter, etc, is described. The design and manufacturing techniques of the controllable power converter are proposed to generate the sinusoidal output current m the high speed operation and to get the constant DC voltage in the regeneration mode The cylindrical permanent magnet synchronous motor with halbach array of Nd-Fe-B permanent magnet which is the high coercivity material is used as the driver of FES. The proposed S-FES system shows the stable rotation characteristics at high speed range about 10,000 rpm. To verify the valid1ty of proposed system, the comparative study with the conventional ball bearing system is proceeded and 1t is well confirmed with the result of the lower friction loss of S-FES system.