HEV series architectures evaluation: modeling, simulation and experimentation

This paper presents a simulation and experimental comparison study of three HEV series architectures: engine only, battery hybridization and battery-ultracapacitors hybridization configurations. The models of the components, including vehicle, batteries, ultracapacitors, motor, generator and engine are introduced. Simulation and experimental results show that the fuel economy in the battery hybridization configuration is about 17% compared to the engine stand-alone solution. Despite the battery-ultracapacitors hybridization configuration does not add significant fuel economy, it is shown that the battery transients can be limited to improve their lifetime. Simulation and experimental comparison show that the models permit the energy management strategies to be evaluated with a good accuracy before testing them on the real test bench.