Power System Modeling And Driving Control Of Distributed Drive Electric Vehicles

Distributed drive electric vehicles have one or more of the on-board power source, eachwheel has a drive motor driven directly or indirectly, it will separate controlled drive systemdistributed to each wheel.as an emerging form of car, Distributed drive electric vehicles hasits unique advantages，but there are many unresolved theoretical problems. Research onbasic project of countries have already started (key basic question research abouthigh-performance distributed drive electric vehicles), provide theoretical support for thedevelopment of distributed drive electric vehicles. As an important of the project team.ourteam undertake project topic5(coupling system for vehicle dynamics control of Distributeddrive electric vehicles).The project not only is significant of environment and resources, butalso a major national development strategy important needs. It will solve technical barriersfor development of electric vehicles.This paper take driving control of the Distributed drive electric vehicles as the main line,mirror from the domestic and foreign research results, and the rich resources of the projectgroup. Study power system modeling, traffic control station, driving distribution theory.Thefull paper was divided into five chapters.First chapter is introduction.It introduces the development situation of electric vehiclesand electric vehicle simulation characteristics. Lists the main methods of driving distribution,Pointed out the research contents and train of thought in this paper.The second chapter, establish permanent magnet synchronous motor mathematicalmodel, and decoupling，transform it to the coordinates which is similar to dc motor controlmethod. Permanent magnet synchronous motor vector control principle are studied in detail.By the principle of permanent magnet synchronous motor vector control, take the complexof motor into simplify model which correctly reflect what we focus on characteristic parameters, and can be used to the simulation. Finally with the help of a group maturevehicle model, build a complete simulation model of distributed drive electric vehicle thatcan be used to research driving control of distributed drive electric vehicle.The third chapter,driving control of distributed drive electric vehicle is divided into twoaspects.for one traffic control station, Research basic principle of traffic control station, andvehicle parameters which is used to control the process. finally designed the control logic oftraffic control station for distributed driving electric vehicles. for the other Driving forcedistribution,it is divided into two aspects,for the one ideal distribution between front axleand rear axle. It Is based on the limit condition, guarantee vehicle longitudinal acceleration,the vehicle has the largest lateral interference resistance ability. for the other distributionbetween left and right. It is basis on distribution between front axle and rear axle to ensurethat the vehicle lateral stability research methods.The fourth chapter.make the study the control algorithm into model in theMatlab/simulink environment. To verify and analysis.The fifth chapter, Make summary to full paper,and look forward to it.