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A dc reactor is operated under a dc current to reduce the current's ripple or harmonics in the power system. General dc reactors in high-voltage dc systems use a metal conductor. This has some disadvantages such as large reactor size, leakage flux, wide install space, heavy weight, and electrical losses due to the large operating current. This paper describes the design of the toroid-type high-temperature...
The study proposed a design of magnetization yoke of ferrite spoke-type permanent magnet synchronous motor. A high magnetic field intensity(H) is required for the magnetization of permanent magnet, meaning that the analysis of nonlinear finite elements methods is needed considering saturation of core. The permanent magnet is placed deeply to the shaft especially in spoke-type motor. The high H, however,...
UAV(Unmanned Aerial Vehicle) has led to a new era of global growth, and interest about UAV has rapidly increasing [1]. The Drone is a type of UAV. In recent years, with the camera mounted on a drone, and it has been used to take a farm, the military, and broadcast video. To shoot an image, it can turn the body of the camera angle and drones, it must be able to tilt. Multi-DOF (degree-of-freedom) system...
In order to design a permanent magnet synchronous motor, the inductance must be computed. In this paper, the flux concentrating permanent magnet synchronous motor (FCPMSM) is introduced. It is not easy to calculate the inductance because of the complex structure of the rotor. Because the rib and bridge consists of an iron core, they have a non-linear characteristic. In order to obtain the effective...
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