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The Simulation Research into Braking Energy Regeneration of Hybrid Electric Vehicle

Author: LiChao
Tutor: SunJun
School: Hefei University of Technology
Course: Vehicle Engineering
Keywords: electric vehicle super capacitor model regenerative braking distribution strategy
CLC: U469.72
Type: Master's thesis
Year: 2009
Downloads: 340
Quote: 3
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Abstract


Because of fuel crisis and environment pollution brought by traditional internal combustine engine automobile, people pay more attention to EV (electric vehicle). Electric vehicle uses electricity for energy resources, therefore owns the advantage of zero emission to the air, but the disadvantage is that its driving mileage is short due to the technology of battery. EV with battery and super capacitor can have higher driving mileage because when EV brakes, the super capacitor, which has the character of quick charging and discharging in a short time, will absorb most of regenerative energy.This paper builds the EV energy flowing model by using Matlab/Simulink software. The model contains vehicle module, motor module, power distribution module, battery module and super capacitor module, then inputs city cycle into the model for simulation. On the basis of simulation model, first by comparing the difference of battery capacity between EV with and without super capacitor, analyze the EV energy economy especially braking energy regeneration impacted by super capacitor. Then adjust the parameters of battery, super capacitor such as weight, serial number and the number of parallel to optimize EV performance. This paper foucus on the power distribution ratio between battery and super capacitor under various EV conditions like acceleration, steady and deceleration; select the most suitable distribution strategy by adjusting and comparing different number to save energy, which provides theoretical basis to the application of super capacitor to EV.

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CLC: > Transportation > Road transport > Automotive Engineering > A variety of automotive > Various energy vehicles > Electric vehicles
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