The Study Of Power Synthesis And Switch Performance Used On HEV

The mix power automobile has at least two power supplies. Hybrid Electric Vehicle (HEV) generally has an engine and an electric motor to provide power. The power synthesizes and cuts installation is a set of mechanism which is used to unite and split the power for different energy sources above HEV. As an important part of vehicle transmission, the power synthesizes and cuts installment characteristics have effect on the whole running status and performances. The power synthesizes and cuts installation in this paper is a set of planet gear system, it can unit rotate speed or power from different inputs and has a reliable energy cut, moreover the energy flux direction change the structure is compact, facilitates the control, moreover effective, reliable. It can support many kinds of working Pattern when unite with the traditional power drive technology.This paper made some about the power synthesizes and cuts installment of HEV. The specification is as follows: kinematics and dynamics analysis, simulation analysis, vehicle simulation according to different modes and providing main components selection and the control strategy. This can be references and basis for the latter and further research, at the same time provide ways for studying the same kind installation.As the power synthesizes and cuts installation in this paper is a set of planet gear system, the article introduces planetary gear transmission first, then analysis the drive parameters and rotate speed output characteristics of the power synthesizes and cuts installation, on the basis of this.The paper introduces methods and object for studying gear system dynamics and the general situation of planetary gear system studying. The paper makes some dynamic analysis for the power synthesizes and cuts installation by establishing equivalent mechanical model and obtains stiffness and dynamic responses under the condition of different working states.3D model for the power synthesizes and cuts installation is established in SolidWorks. Using virtual prototyping technology software ADAMS to simulate the input-output speed and gears dynamic performances.Finally, the control strategy,main power components selection are given out according to the power synthesizes and cuts installation design index. The whole simulation models are established based on ADVISOR2002, and simulation analysis is presented.