This paper introduces a simulation model that can be used to develop and test
designs and control systems for hybrid electric vehicles (HEVs). The work involves a novel
simulating platform, developed in Simulink, where each component of a series HEV is developed
using a first-principles approach in a modular fashion, validated by available experimental data
and then integrated to form a coupled nonlinear dynamic model. The vehicle model is capable to
act as a platform for the design of supervisory control systems (SCSs) that optimize the energy
flow in the powertrain. Simulations with two distinct SCSs and two driving cycles are used to
analyze the vehicle performance under varying driving and operating conditions. The results
demonstrate the applicability of the model for realistic prediction of both vehicle behavior and
component energy losses, design optimization and control system design.