Analyses and experimental validation testing of rotor dynamics of a flywheel

doi:10.12028/j.issn.2095-4239.2018.0232

Abstract

Abstract: The rotor dynamics of a 250 kW/3 kW·h magnetic flywheel storage system was studied by using a combination of theoretical analysis, simulations and experimental testing. The Timoshenko beam theory was used first to obtain the motion equation of the rotor element. The ANSYS software was then used to calculate the critical speed and unbalanced response of the rotor. Finally, a radial magnetic bearing sensor was used to collect the displacement signal during speed increase for the determination of the vibration waveform and the validation of the accuracy of the dynamic parameters of the rotor and the simulation results. The spectrum waterfall diagram and the vibration displacement response curve of the rotor were compared with the Campbell diagram and the unbalanced response diagram of the simulation analysis. It was found that the experimental test results were consistent with the simulation results.

Key words: critical speed, energy storage flywheel, finite element analysis, spectrum

CLC Number:

TH133

PENG Long, LI Guangjun, CUI Yadong, WANG Fang. Analyses and experimental validation testing of rotor dynamics of a flywheel[J]. Energy Storage Science and Technology, 2019, 8(3): 595-601.

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