Design Optimization of Flywheel Energy Storage System Rotor for Wind Power Smoothing
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Authors
Ghume, Aditya A.
Issue Date
2019-03-29
Type
Other
Language
en_US
Keywords
Design optimization , Flywheel , Wind power
Alternative Title
Abstract
This project studied flywheel rotor design for high speed flywheel energy storage systems. A two-dimensional plane stress finite element model was developed to predict radial and hoop stress distributions in a flywheel rotor under high centrifugal loads. The FEA model was used to study the effects of multi-ring configuration and hub design on the distribution of radial and hoop stress distributions. It was found that a multi-ring design with gradual increase of stiffness in the radial direction can reduce the radial tensile stress and thus reduces the risk of delamination. A flexible hub design was found to reduce hoop and radial stresses in the shaft and radial stress in reduction of radial stress in the rotor.