Energy Management Of A Series Parallel Hybrid Electric Vehicle Using Fuzzy Controller

A series parallel hybrid electric vehicle (HEV) with a conventional internal combustion engine (ICE) and a power split device have been designed using REVS (Renewable Energy Vehicle Simulator) simulation package. REVS has been developed at University of Manitoba to assist in detail studies of different configurations of hybrid electric vehicles (HEV) through visual programming by creating components as hierarchical subsystems. REVS was developed in the Matlab/Simulink graphical simulation language as well as IDEAS package and is portable to most computer platforms. A Fuzzy Controller has been developed for energy management strategy of a series parallel HEV. The output power of ICE is directly commanded by driver’s acceleration pedal. The electric motor power assignment is implemented using the fuzzy controller under a Rule-base frame. The rules are defined based on the driver’s acceleration command and the status of the SOC (state of charge) of the battery. The rules ensure that the electric motor and the battery operate at high efficiency whenever possible. Simulation results of the energy management system and dynamic responses of the system are discussed for proposed vehicle.