Hybrid Transmission Demo

Download this exampleHybridTransmission.zipFull project — Dyad model + Julia + data›

A power-split hybrid electric vehicle that uses an Equivalent Consumption Minimization Strategy (ECMS) controller to optimally split torque demand between an Atkinson-cycle internal-combustion engine and two permanent-magnet motor/generators. The controller minimizes an equivalent cost J = fuel_rate + s * P_battery, where the equivalence factor s is dynamically adjusted from battery state-of-charge feedback, trading fuel burn against battery drain in real time. The engine, MG1, and MG2 are coupled through an ideal planetary gear set, and the 1750 kg vehicle follows the EPA Highway Fuel Economy Test (HWFET) drive cycle.

Note

This is a heavy demo. The model diagram below renders from a snapshot, but the simulations are not executed in the documentation build. Run them from the HybridTransmission project.

The model

PowerSplitHybrid is the complete closed-loop vehicle: the HWFET drive cycle source, ECMS controller, engine, the MG1/MG2 motor/generators, planetary transmission, battery, and lumped vehicle body wired together: