Modelling and control of a light-duty hybrid electric truck

摘要

This study is concentrated on modelling and developing the controller for the light-dutyhybrid electric truck. The hybrid electric vehicle has advantages in fuel economy.However, there have been relatively few studies on commercial HEVs, whilst aconsiderable number of studies on the hybrid electric system have been conducted in thefield of passenger cars. So the current status and the methodologies to develop the LDhybrid electric truck model have been studied through the literature review.The modelling process used in this study is divided into three major stages. The firststage is to determine the structure of the hybrid electric truck and define the hardware.The second is the component modelling using the AMESim simulation tool to develop aforward facing model. In order to complete the component modelling, the informationand data were collected from various sources including references and ADVISOR. Thethird stage is concerned with the controller which was written in Simulink. This was runin a co-simulation with the AMESim vehicle model. Through the initial simulation, thecharge-sustaining performance of this controller was verified and improved.Finally, the simulations for the complete model were carried out over a number of drivecycles, such as CBDTRUCK, JE05, and TRL LGV drive cycle, to evaluate and analysethe effect on the fuel economy and the vehicle performance by the engine operatingzone and the EM power capacity. The report presents a comparison of the fuelefficiency of the conventional vehicle and the LD hybrid electric truck. The resultsobtained by the simulation show the feasibility to build the complete vehicle with thedesigned controller.