Research on the Dynamic Performance and Parameter Design of Parallel Hybrid Electric Vehicle

Abstract

According to the Parallel Hybrid Electric Vehicle (PHEV) demands on powertrain systems, the dynamic models of PHEV are built in this paper. Base on the analysis of dynamical characteristics of both internal combustion engine (ICE) and electric machine (EM), the dynamic ability and fuel economy performance of PHEV is presented. The paper focuses on the parametric design of powertrain on vehicle performance, which provided the theoretical foundation for PHEV design. The paper also puts forward the control strategy of PHEV during the operating modes switching, which aims to solve the problem of the power distribution between the ICE and electric motor, which can effectively resolve process control problems of the complex PHEV system. By employing the dynamic model and performing MATLAB simulation, the results of simulation are given, which demonstrate that the PHEV improve performance well.

Computer Simulation Design of Electric Vehicle Dynamic Performance

“…Where: --Total vehicle mass (kg);m a ƒ--Rolling coefficient; ηMechanical efficiency of vehicle chassis transmission; C D --Air resistance coefficient; A D --Windward area of the vehicle (m2); ν max --Maximum speed (km/h); P0 --Power (kW) obtained by relevant professional working devices while the vehicle is running; 𝜂𝜂 0 Mechanical efficiency of special working device [1]. The power of the generator is specially reserved, and its load rate is generally between 75% and 90%.…”

“…From the perspective of consumer market, electric vehicles are mainly concentrated in coastal cities and some economically developed provincial capital cities, largely because of the implementation of national Sixth standard in some cities. However, as the country attaches great importance to energy saving, emission reduction and environmental protection, and vigorously develops new energy vehicles, pure electric vehicles will achieve rapid development in the transportation industry with its advantages of energy saving, pollution-free, noiseless, flexible and free from traffic restrictions [1].…”

Engine-in-the-Loop Validation of a Frequency Domain Power Distribution Strategy for Series Hybrid Powertrains

“…Vehicle powertrain hybridization is one of the promising technologies for improved fuel economy and reduced tailpipe emissions, where hydraulic accumulators or batteries are used in conjunction with internal combustion engines. Various different topologies for hybridization have been explored; e.g., series Kim, 2010, Jalil et al, 1997), parallel , Yang et al, 2012, Zheng et al, 2010, and power split (or series-parallel) Peng, 2008, Yanhe andKar, 2011). They all demonstrated improvements in fuel economy and some showed reduction in emissions.…”