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Internal Combustion Engine Control System Design Suitable for Hybrid Propulsion Applications*

This paper presents a generator set speed control system within a hybrid propulsion based on an internal combustion engine (ICE) used as the primary energy source for a hypothetical multi-rotor unmanned aerial vehicle (UAV). The engine-generator set rotational speed is estimated based on rotor position sensing from embedded Hall sensors and armature current/voltage measurements within the framework of Kalman filtering. Based on these speed estimators, ICE speed control systems featuring proportional-integral (PI) and proportional-integral-derivative (PID) feedback controllers are designed utilizing damping optimum criterion, and the resulting control systems are validated by means of simulations within Matlab/Simulink environment.