The interest in autonomous electrified vehicles has rapidly increased in recent years. In this paper, a speed trajectory generation method based on speed and road grade preview over a short horizon is presented, to improve energy efficiency of the autonomous power split HEV and BEV. The speed trajectory is generated by minimizing the required cumulative over the the horizon wheel power, including regenerative power. We confirm by simulations that the generated speed profiles improve MPG (or MPGe) even though only a short horizon preview information is used with small deviation permitted from the nominal speed profile.

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Motivated by the growing need to accommodate large transient thrust and electrical load requests in future more-electric aircraft, a coordinated control strategy for a gas turbine engine, generators, and energy storage is developed. An advanced two-generator configuration, with each generator connected to a shaft of the gas turbine engine, is treated. Model predictive control maximizes system performance and protects this system against constraint violations. The controller design is exploits rate-based linear prediction models. In addition, an auxiliary offset state improves the match between the linear prediction model and the nonlinear system. The auxiliary offset state allows the system to be controlled over the large operating range without requiring multiple linearizations/ controllers. The advantages of different energy storages are also compared to complement the two-generator configuration in a more electric aircraft. Primary results indicate that the coordinated model predictive control with an auxiliary offset state yields better performance than other control strategies, and it successfully controls the considered system to satisfy specified requirements over a large operating range. The battery-ultracapacitor pack allows improvement of the overall system performance.

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