Abstract
This paper is concerned with the feasibility study based on computer simulation to realize a 10 MWh class energy storage flywheel system. Actually, we had done the exact vibration analysis of one model of 10 MWh class flywheel rotor using CAE software based on a finite element method taking into account a gyroscopic effect. This flywheel system is the outer rotor which consists of a four spoke rib, CFRP flywheel, superconducting magnetic bearing and active magnetic bearing. The conceptual design, vibration analysis, modeling for control and H∞ controller design of the 10 MWh class energy storage flywheel system are discussed in this paper in detail. Specially, We propose five kind of models to verify the stability of 10 MWh class energy storage flywheel system with gyroscopic effect or not. The five kind of models are the ANSYS model, the one-dimensional FEM model without gyroscopic effect, the FEM model with gyroscopic effect, the reduced-order model without gyroscopic effect and the flexible support model with gyroscopic effect. The closed loop stability of system was verified by these models. It is clarified that H∞ controller taking into account gyroscopic effect can stabilize the flywheel system.
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