Modeling and Simulation Analysis of Hybrid Electric Vehicle Based on AMEsim Software

Abstract

In recent years, with the continuous consumption of global oil resources, environmental pollution has become increasingly serious. Therefore, more and more attention has been paid to reducing pollutants emitted by vehicles, and it is particularly important to develop energy-saving, exhaust-free, pollution-free new energy vehicles. Until the problem of battery technology is solved, plug-in hybrid electric vehicles can be used as one of the options for the transition from traditional vehicles to new energy vehicles. The power system of hybrid electric vehicles is complex and the optimum temperature range of power components is different. Thermal management of hybrid electric vehicles is from the perspective of the vehicle, to coordinate the relevant matching, optimization and control of the vehicle engine, air conditioning, battery, motor and other related components and subsystems, effectively solve the vehicle thermal related problems, so that each function module is in the best temperature working range, and improve the economy and power of the vehicle. Ensure vehicle safety. An accurate hybrid vehicle model is a prerequisite for establishing a thermal management system. Therefore, this paper takes plug-in parallel hybrid electric vehicle as the research object, and builds a simulation model composed of drive module, engine module, battery module, vehicle control unit, transmission module and motor module based on the AMEsim simulation platform. This paper mainly analyzes the system structure of different hybrid electric vehicles, chooses this paper to study the system structure of hybrid electric vehicles, and matches the parameters of each power component according to the basic parameters and dynamic requirements of the vehicle, builds the vehicle model based on AMEsim software, and carries out the vehicle speed following simulation and dynamic simulation under NEDC conditions The simulation results show that the vehicle speed follows well under NEDC conditions, and the dynamic performance meets the design requirements.  It can be considered that the model selection, parameters setting and vehicle control model of engine, drive motor, generator, power battery and other components meet the requirements of this paper.  The results show that the simulation model is accurate and reliable.