Mitigation of Collapse of Turbo Electric Distributed Propulsion System in Response to Reconfiguration under Extreme Conditions

Advancement in transportation electrification has led to the revolutionary concept of Turbo electric distributed (TeDP) propulsion in aircrafts. NASA’s N3X aims to curb the jet fuel emission by TeDP. There as been a significant number of accidents for commercial aircraft due to various endogenous failure events. Thus, it becomes crucial to analyse the TeDP system under extreme conditions and analyse the survivability under those transient conditions. Reconfiguration under extreme failure events is a way to meet the load demand. However, this creates a transient overload condition due to the fuel map limit of the turboshaft prime mover and affects the DC bus voltage. It is important to understand the survivability of the system during these extreme conditions which can lead to a collapse of the system and can present instability issue because of the CPL. In this work a mathematical analysis of the survivability of the system is presented in order to make it resilient. To prevent the collapse of the system a mitigation strategy has been proposed using the energy storage system which makes the turboshaft to remain in the safe zone. The system was simulated for two different failure conditions in PSCAD and the optimum energy required to make the system survive was obtained.