MODELING AND ANALYSIS OF A P3 HYBRID ELECTRIC VEHICLE WITH DOG CLUTCH ENGAGEMENT

Abstract

The automotive industry is shifting toward hybrid electric vehicles (HEVs) to reduce emissions and fuel consumption. Among several HEV topologies, the P3 configuration places the electric motor after the transmission, which enables engine support, electric drive, and regenerative braking. However, integrating the motor mechanically via a dog clutch presents a challenge — it demands precise control logic to engage and disengage the motor safely and efficiently. This thesis proposes a detailed modeling and control framework for a P3 HEV architecture using MATLAB Simulink and Simscape. A dog clutch is used to manage motor connectivity to the drivetrain, with engagement logic implemented in Stateflow. The plant model simulates dynamic driving conditions, and the control system decides clutch operation based on speed synchronization, torque demand, and battery SOC. Results show effective clutch operation and smooth transition between hybrid modes, validating the feasibility of this configuration in real-world applications.