Design And Simulation Of Composite Flywheel With High Speed In Flywheel Battery Of Hybrid Electrical Bus

This paper summarized the research state and developing trend of the flywheel battery in detail in domestic and overseas, then discussed the weakness of the study in flywheel battery of hybrid electrical vehicles and put forward the design ideal of composite material flywheels with high speed in Hybrid electrical vehicles.Based on productional level and capability demand of hybrid electrical vehicles in our country ,this paper designed a flywheel through analyseing and calculateing of different composite materials and shapes. Through a Finite Element Analysis method, the limiting rotational speed of composite flywheel was calculated and Critical Rotational Speed was analyzed. The energy density of flywheel increased 111 percent which compared with originally flywheel project. In another way ,the flywheel was easy to be manufactured. So the design was excellent. A new method was developed for design of the composite material flywheel with high speed.In this paper ,the method of optimization of shape design for the composite material flywheel with high speed was put forward on the base of the analytical method and research optimization of shape design, and established the models of density optimization of energy and light mass.These models were used to design two typical composite flywheels with high speed in hybrid electrical vehicle flywheel battery and the stress level and convergence on the flywheel were got .Then a new way was developed for optimization of shape design of the composite material flywheel with high speed.In order to get the energy characteristic of flywheel, this paper put forward the circumrotate state K of flywheel by analogy with SOC .Then , the energy model of Flywheel Battery was established and the simulation results of the design Flywheel Battery were got. From practical application ,it was obviously that the K was more favorable for the advance development of ADVISOR.The research result provided the effective calculational model and numerical method for the design and analysis of composite flywheels. And it offered thevaluable reference to similar rotor structures and composite structures.