Fault-tolerant and Resilient Electrification for the More Electric Engine

Abstract

This paper describes a safe, high-reliability engine control system configured for the More Electric Aero engine, in particular for the electrical motor-driven fuel pump and the EMA for engine variable geometry. By applying the unique active/active control system for electrical motors and the summing method, we devised a high-reliability, fault-tolerant redundant system whose key focus is jamming prevention/protection and immediate failover. MEE is a new engine concept that should lead to more efficient engines and aircraft, lower environmental impact, and lower life cycle costs. The simple, highly reliable fault-tolerant power control system proposed here is essential to MEE, since engine safety and reliability are the first priority when applying a new system concept to an engine. Only the system proposed here meets all these requirements.