Fuzzy logic based control strategy for parallel hybrid electric vehicle

In the parallel hybrid electric vehicle (PHEV) the load torque and speed control are the key point for efficient driving vehicle. A dynamic model of PHEV derived by an induction motor (IM) and an internal combustion engine (ICE) is made using Simulink package in Matlab. A comparison between a conventional PID controller and a fuzzy logic control (FLC) method. Also, analysis of IM with FL at variable load torque and speed is given. Simulation results show that the proposed FLC of speed provides high-performance dynamic characteristics and is robust with regard to motor parameter variations and load change. Finally a model of PHEV powered with IM and ICE is shown to be valid for different road cycles.