The Open Electrical & Electronic Engineering Journal

2015, 9 : 496-503
Published online 2015 October 21. DOI: 10.2174/1874129001509010496
Publisher ID: TOEEJ-9-496

Influences of Assault Blocks on Rotor Vibrations in AMB System

Zhu Yili and Zhang Yongchun
Department of Electrical Engineering, Changzhou Institute of Technology, Changzhou, Jiangsu, 213002, P.R. China.

ABSTRACT

In an active magnetic bearing (AMB) system, the rotor always rotates at extremely high speed which always accompany with huge vibrations and noises. Most of the former researches associated with reducing the rotor vibrations are mainly focused on the control methods of AMB. A new method of installing series of assault blocks in the rotor is proposed to reduce the rotor vibrations. Firstly, the dynamic models of rotor supported by AMB considering the influences of assault blocks are established. Then, both dynamic simulations with and without assault blocks are carried out separately using the real-time AMB support dynamic stiffness. The rotor vibration displacements are mainly analyzed. Finally, relevant experiments are made to verify the theoretical results. Both theoretical and experimental results validated the advantages of using assault blocks.

Keywords:

Active magnetic bearing, assault block, dynamic stiffness, rotor vibration.