| Range extended electric vehicles could improved travel distance of pure electric vehicles,increased extender in the pure electric vehicles,the extender only charge battery,not directly involved in the vehicle energy output.The flywheel energy storage technology is one of the braking energy recovery technology,use it could save energy and reduce emissions of pollutants.At run time,the traditional pure electric vehicle battery in charge and discharge frequently due to the influence of conditions,and also damages battery.Test platform could simulate the driving situation,braking energy recovery and extended range charge.The paper research by means of simulation test platform and AVL cruise simulation with flywheel energy storage system.On this basis,established the range extended electric vehicle with the flywheel energy storage system model analyze the working principle of energy storage flywheel.Flywheel energy storage system could run the drive test and energy recovery test..In view of the results and simulation test platform,the flywheel energy storage system has ability to recovered and released energy and improved the acceleration of the vehicle.The Simulation load speed faster,the recyclable energy was batter.Energy recovery was restricted by the flywheel energy storage system.Under the condition of simulation joined the flywheel energy storage system,test platform and miniature electric vehicles for reference,simulation test the performance of this model.The maximum speed was 68km/h.The acceleration time was 12 s in the range of 0~40km/h.The maximum grade ability was 12°.The use demand of NEDC urban operating condition was satisfied the simulation of model vehicle results.The energy saving was 9% with transmission ratio 10(consider mechanical energy loss was 6.3%).Under simulated test conditions,the energy saving rate is 5%.The energy saving rate relate to transmission ratio.In the transmission ratio 0~40 range.The bigger transmission ratio,the better energy saving. |
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