| Flywheel energy storage system as a good performance of the new energy storagemethod has more advantages such as green environmental protection; high efficiency withless mass; long service life, etc. Based on energy requirements and basic performancerequirement, a study on flywheel energy storage system which used on vehicle has beencompleted.Some key parts such as flywheel shaft, flywheel rotor, bracing system, motor/generator,protective case, coat and electronic device is included in flywheel energy storage system.Firstly, based on functions and performance the system has achieved and minimal lossprinciple, the general scheme has been completed. Each component design scheme has beenconfirmed.Secondly, on the basis of theoretical analysis, the key parts have been designed andchecked. Genetic algorithm has used to design metal flywheel rotor and composite flywheelrotor. In addition, the two kinds of flywheel rotor has been Evaluated respectively. Chosen thepreferred plan. Electromagnetic bearings have been chosen. Moreover, hub of compositeflywheel rotor has been designed based on flywheel design theory. Shaft has been completeddesigned and checked. Based on impacted dynamics, protective case has been designed.Finally, The two finite element analysis software ANSYS and LS-DYNA3D have usedin finite element analysis. The force condition of turning ring has been analysed, the stressdistribution has been got; force analysis, strength check and Damage simulation of metalflywheel rotor which under design rotational speed have been analysed; in addition, forcomposite flywheel rotor, force analysis and strength check under design rotational speedhave been done, model analysis and prestress size on the influence of each component havebeen completed. After that, based on the simulation of the composite flywheel rotor damage,the penetration analysis of protective case has completed for confirmed safety of protectivecase, at last, Reasonable improvement plan has been put forward. |
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