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research-article

Surge Vibration-induced Nonlinear Behavior Regulation of Power Amplifier for Magnetic Bearing in a 315kW Centrifugal Compressor

[+] Author and Article Information
Yin Zhang

Science and Technology on Inertial Laboratory, Beihang University, 37 Xueyuan Road, Beijing 100191, China
zhangyin@buaa.edu.cn

Shiqiang Zheng

Science and Technology on Inertial Laboratory, Beihang University, 37 Xueyuan Road, Beijing 100191, China
zhengshiqiang@buaa.edu.cn

Chen Ma

Beijing Aerospace Institute for Metrology and Measurement Technology, 1 Nandahongmen Road, Beijing 100076, China
horse_machine@163.com

Cheng Chen

Science and Technology on Inertial Laboratory, Beihang University, 37 Xueyuan Road, Beijing 100191, China
18811442036@163.com

Can Wang

Science and Technology on Inertial Laboratory, Beihang University, 37 Xueyuan Road, Beijing 100191, China
wangcan_cqu@buaa.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4037849 History: Received February 22, 2017; Revised August 23, 2017

Abstract

The severe vibration induced by surge and rotating stall is an obstacle to the stability of a magnetically suspended centrifugal compressor (MSCC). In order to suppress the severe vibration caused by surge instability, this paper focuses on the stability analysis and control efforts for the axial thrust magnetic bearing. The complete discrete-time scale model with the three piecewise interval for the power amplifier of AMB-rotor system is built. A comprehensive view of the dynamic evolution process from stable state to bifurcation for the power amplifier is also analysed. In order to stabilize the unstable periodic orbits in the power amplifier, a time delay feedback control (TDFC) method is introduced to enhance the stability of the power amplifier while the MSCC is subjected to the surge instability. Simulation results show that the stable region of the power amplifier is extended significantly using the TDFC method. Finally, the experimental investigations performed by a MSCC test rig demonstrate the effectiveness of the proposed solution under the conditions of modified surge and mild surge.

Copyright (c) 2017 by ASME
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