Critical speed analysis of disc and column flywheel rotor system

doi:10.12028/j.issn.2095-4239.2018.0076

Abstract

Abstract: For the flywheel energy storage system, the maximum speed of the flywheel energy storage system in experiments is 9300 r/min, which is less than the maximum rated speed of 15000 r/min. This will greatly reduce the maximum energy storage of the flywheel energy storage system. In order to improve rotor dynamics structural design, theoretical formulae analysis, finite element analysis of SAMCEF Rotor are used to study the critical speed distribution and stability of disc rotor and column flywheel rotor with combination of experimental data. The analysis result indicated that the second-order critical speed of the disc flywheel rotor with the same mass and different structure far exceeds the column-type flywheel rotor, and the first-order critical speed of the two types of flywheel is almost the same value. According to the different working speed and energy requirements of the flywheel rotor, different structural solutions should be adopted to ensure the requirements of the operating speed and stable operation.

Key words: flywheel energy storage, SAMCEF Rotor, critical speed, stability

CLC Number:

REN Zhengyi, ZHOU Yuanwei, MA Yanqin, HUANG Tong. Critical speed analysis of disc and column flywheel rotor system[J]. Energy Storage Science and Technology, 2018, 7(5): 821-827.

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