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research-article

Dynamics of Flywheel Energy Storage System with Permanent Magnetic Bearing and Spiral Groove Bearing

[+] Author and Article Information
Yujiang Qiu

School of Mechanical Engineering, Southeast University, 2 Southeast Road, JiangNing District, Nanjing 211189, China
nylgjdxqyj@163.com

Shuyun Jiang

School of Mechanical Engineering, Southeast University, 2 Southeast Road, JiangNing District, Nanjing 211189, China
jiangshy@seu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4037297 History: Received February 08, 2017; Revised July 07, 2017

Abstract

Developing a flywheel energy storage system (FESS) with permanent magnetic bearing (PMB) and spiral groove bearing (SGB) brings a great challenge to dynamic control for the rotor system. In this technical brief, a pendulum tuned mass damper is developed for 100 kg-class FESS to suppress low-frequency vibration of system; the dynamic model with four degrees of freedom is built for the FESS using Lagrange's theorem; mode characteristics, critical speeds and Unbalance responses of the system are analyzed via theory and experiment. A comparison between the theoretical results and the experiment shows that the pendulum tuned mass damper is effective, the dynamic model is appropriate, and the FESS can run smoothly within the working speed range.

Copyright (c) 2017 by ASME
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