Damper Optimization Design of High-Speed Energy Storage Flywheel Shafting with a Single Point Flexible Support

Abstract:

The flywheel energy storage technology is a new type of conversion and storage for electric energy, and it is also a research hotspot of energy field in the world. There are a large number of studies on dynamic characteristics of energy storage flywheel in recent years. The flexible support with a single point has small load-carrying ability but very low friction loss, which is appropriate to be used in small flywheel system. By using a small stiffness pivot-jewel bearing and an oil damper as the lower support of the flywheel, a high-speed flywheel shafting with a single point flexible support was built. The dynamic model of the shafting was obtained by means of the Lagrangian equation. Based on the same energy dissipation of oil damper and flywheel, the optimal equivalent damping of flywheel was determined. The optimization criteria for dynamic state and parameters between oil damper and shafting were also presented. The lower damper’s effects on the mode shapes, modal damping ratios and forced vibration were discussed.

• Periodical: Applied Mechanics and Materials (Volumes 672-674)
• Pages: 509-517
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.672-674.509
• Online since: October 2014
• Authors: Chang Liang Tang*, Dong Jiang Han, Jin Fu Yang, Xing Jian Dai
• Keywords: Energy Storage Flywheel, Gyroscopic Effect, Modal Damping Ratio, Oil Damper, Single Point Flexible Support

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