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The Strategy Research on the Control of Pure Electric Vehicle Motor Propulsion System

Author: LiBinHua
Tutor: ZhongZhiHua；ZhongYong
School: Hunan University
Course: Vehicle Engineering
Keywords: Pure electric vehicles Motor drive system AC induction motor Direct Torque Control Control strategy
CLC: U469.72
Type: Master's thesis
Year: 2005
Downloads: 1737
Quote: 23
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Abstract


In today's increasingly tense pressure on the environment , electric vehicles more attention from researchers . Modern electric vehicles can be divided into pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles . No matter what kind of electric vehicles , the motor drive system are its indispensable part , the power output of a direct impact on the dynamic performance of electric vehicles , energy consumption directly affects the driving range of electric vehicles . This research direction is a pure electric vehicle motor drive system control strategy . In order to facilitate the study of vehicle power performance , taking into account the AC induction motor has the advantage of a wide speed range , the AC induction motor drive , the traditional mechanical drive arrangement , fixed gear ratio electric vehicle drive system as the research object . The motor speed control method of direct torque control . The purpose of this research is : the establishment in accordance with the driver 's operation to control the electric vehicle drive system power output control model , choose the appropriate control strategies for direct torque control module torque reference , so that the electric vehicle motor drive system the power output to achieve the purpose of a driver's driving . Study, the first to establish a mechanical model of the electric vehicle in electric vehicle road test and modified by Santana , the model is verified to a certain extent , on this basis, two control models . The control model select fuzzy control strategy is difficult to estimate , but due to lack of expertise constraints and the input range and other factors , the control strategy possible to obtain the desired effect . Then , this article uses a variable parameter PID control - the incremental control strategies based on the vehicle speed deviation , the simulation results show that the control strategy to control demand . Further , the control strategy in a more complex road conditions simulation to verify the feasibility and effectiveness of the policy . Order to improve energy efficiency , the paper considers the braking energy during deceleration contribute to the problem .

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