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Research On Regenerative Braking Method Based On Hybrid Power Source

Posted on:2021-01-19Degree:MasterType:Thesis
Country:ChinaCandidate:Y B WangFull Text:PDF
GTID:2392330623474880Subject:Engineering
Abstract/Summary:PDF Full Text Request
Energy consumption and environmental pollution are the two major problems that the world needs to deal with.In order to effectively solve these two problems,energy conservation and environmental protection are used as important reference standards in the development of various industries.In the automotive field,traditional fuel vehicles are transforming into new energy vehicles with energy-saving and environmental protection features,such as hybrid vehicles,pure electric vehicles,and fuel cell vehicles.However,at present,new energy vehicles are difficult to fully promote because of some technical problems that have not been overcome,so many car companies and R & D units are vigorously improving the level of technical research in order to promote the development of new energy vehicles.As one of the key technologies of new energy vehicles,braking energy feedback technology is important for research.In urban conditions,the energy consumed during the braking process can reach about half of the driving energy of the car.If this part of energy can be effectively recovered,the energy utilization rate can be greatly improved and the driving range can be extended.Therefore,the technical level of braking energy feedback determines the efficiency of the car.Therefore,it is necessary to deeply study the braking energy feedback technology to improve the energy feedback efficiency.Based on this,this article takes the braking energy feedback technology applied to pure electric vehicles as the research object,focusing on the following aspects:(1)Research on the energy storage system.We study the characteristics of battery energy storage,flywheel energy storage,hydraulic energy storage and ultra-capacitor energy storage and application in vehicles;compare the difference of various energy storage methods.(2)Research on regenerative braking method.Analyze the difference of existing braking force distribution methods,study the impact of braking force distribution on braking energy feedback efficiency and braking performance,including the distribution of braking force on the front and rear wheels of the car and the coupling of electric power and mechanical braking force.(3)Research on new energy storage system.Improve the traditional electric vehicle energy storage system,using a composite power supply based on battery and ultra-capacitor to ensure the characteristics of high energy density and high power density of the energy storage system of electric vehicles.(4)Experimental and simulation verification.The secondary development of the energy storage system based on Matlab / ADVISOR was carried out,simulation research was carried out to verify the effectiveness of the proposed system and control strategy.Simulate the driving conditions and compare the advantages and disadvantages of existing energy storage systems and new energy storage systems.
Keywords/Search Tags:Electric Vehicle, Braking Energy Feedback, Braking Force Coupling, Control Strategy, Fuzzy control algorithm, Hybrid Power Source
PDF Full Text Request
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