Incremental modelling and simulation of power drive electronics and motor for flight control electromechanical actuators application

This communication proposes a progressive approach for developing models of power drive and motors of electromechanical actuators used in aircraft flight controls. The physical effects to be modelled are listed and prioritized on basis engineering needs and following a model-based systems engineering process. A particular focus is put on energy losses that impact the thermal balance of the EMA and therefore its components´ sizing. Conduction and switching losses are considered for the power drive while copper and iron losses plus cogging torque are considered for the 3-phases motor. The models are structured with resort to the Bond-graph formalism. Then, they are implemented in the Siemens-AMESim simulation environment, re-using as far as possible available submodels for limiting risks and development costs.