A Design Technique for a Magnetic Bearing-Rotor in a Turbo Blower Considering Critical Speeds

摘要：

This paper introduces a rotor design technique for a turbo blower supported by magnetic bearings that considers the critical speeds of the rotor. An important factor for rotor critical speeds is the stiffness of its bearings. The magnetic bearing acts as a negative spring, called the position stiffness prior to operation, and rotor systems are initially unstable until the stiffness (current stiffness) and damping in the active control rotating system are determined using closed loop control forces. This paper describes a finite element model for the rotor, derives the stiffness equations for the magnetic bearing, and defines the total magnetic bearing stiffness including the position stiffness and current stiffness. Finally, the magnetic bearing stiffness that avoids the rotor critical speeds is chosen.

关键词： Magnetic Bearing Turbo Blower Critical Speed One-dimensional Magnetic Field Circuit Analysis

作者: Hoon Hyung JUNG Seung Hee KANG Bang Hyun CHO Chaesil KIM

作者单位: Dept. of Mechanical Engineering, Changwon National Univ., Changwon-si 641-773, Korea

会议类型: 国际会议

会议名称: 2012 International Conference on Advanced Materials Design and Machanics(2012先进材料设计与机械学国际会议 ICAMDM 2012)

会议地点: 厦门

会议语种:英文

页码: 564-567

在线出版日期: 2012-06-05（万方平台首次上网日期，不代表论文的发表时间）