Investigation of MEA power system under step-load and fault conditions using MPC

摘要

The More-Electric Aircraft (MEA) technology has become a leading trend for the new generation aircrafts. The electrical power sources inside the aircraft can be of many types as AC1, DC or hybrid, in addition to, variable voltage and frequency mains. To maintain the aircraft system stability and availability of different sources, efficient control techniques become necessary. In this paper, a complete distribution system of aircraft is modeled and controlled using Model Predictive Control (MPC). The MPC possesses a fast response to dynamic and transient changes as well as the ability to deal with multivariable and constrains applied to inputs and states. The studied aircraft system is investigated during transient condition of severe step-load changes (from no-load to full-load) and during fault scenarios. The MPC control takes into consideration the verification of aircraft standards during transient and fault conditions for the AC and DC voltages at the main buses of the aircraft distribution system. The obtained results verify the capability and efficiency of MPC control method for the variable-frequency aircraft distribution systems during severe conditions of large step-load and fault scenarios.