Electric Starter System for Launching a Gas Turbine Aircraft Engine

Review of More Electric Engines for Civil Aircraft

“…For the first type of SG, the second stage excites the first stage via a diode rectifier, and the third stage receives excitation from the permanent magnets; therefore, the system is self-sustaining and can output power at a wide range of frequencies. Additionally, it has a noncontact brush, featuring high reliability and durability, and is well accepted in the industry [17]. Switched reluctance SGs can be operated under fault conditions [18] and endure higher speed and worse working conditions with relatively high power density.…”

“…For the AMB, its ability to endure high temperature and high speed is vital, and it can operate in environments of 600 ℃ and 50000 rpm [27]. Reference [28] shows that the electric SG system can start the engine at a rate of 55% in no more than 40 s and that the stator current is 20% less than the nominal value. Reference [29] reveals that the reluctance switch SG can perform a 15-second engine starting procedure from 0 rpm to 25000 rpm with a system efficiency exceeding 80% over most of the working speed range.…”