Analysis and Control of a Three-Pole Permanent Magnet Type Bearingless Motor

• Main Authors: Shang-yu Hsu, 徐尚榆
• Other Authors: Shyh-leh Chen
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/32434557372113486326

碩士 === 國立中正大學 === 機械工程所 === 95 === The active magnetic bearing (AMB) possesses several advantages such as no friction, high rotational speed, less energy loss, and long life span etc. However, it must be connected to a motor in rotation application, which may degrade its performance. Bearingless motor is the combination of the active magnetic bearing and motor. It saves software and hardware facilities, resulting in lower costs. This paper mainly designed a three-pole permanent-magnet type bearingless motor. We analyzed the rotational magnetic field, magnetic force of the bearing, and resulting torque of the motor. Finally, we established system mathematical model. The controller design and numerical simulations are implemented, and reach the last target.