Vibration Reduction Optimization Design of an Energy Storage Flywheel Rotor with ESDFD

To solve the excessive vibration of an energy storage flywheel rotor under complex operating conditions, an optimization design method used to the energy storage flywheel rotor with elastic support/dry friction damper (ESDFD) is proposed. Firstly, the dynamic model of the ESDFDs-energy storage flywheel rotor coupling system is established by using the finite element method. Secondly, through variables sensitivity analysis, support stiffness, support position, shaft stiffness and the position of flywheel are determined as design variables. Then, the optimization objective function is constructed by comprehensively considering critical speed constraint, influence factors of mode unbalance, proportion of strain energy and energy consumption rate of damper. Finally, the improved particle swarm optimization is used to optimize the design of the energy storage flywheel rotor with ESDFDs. The results show that the damping performance of the ESDFDs increase by 25%-40% and the unbalance sensitivity of rotor decreases compared with initial model, and it indicates the optimization design of the energy storage flywheel rotor with ESDFDs is effective.