Excitation procedure for brushless woundrotor synchronous starter generator with seamless transitions

Adel Deriszadeh*, Orkun Karabasoglu, Salih Baris Ozturk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


An analytical model of excitation system of brushless wound-rotor synchronous starter generator for aircraft applications is developed and presented in this study. During engine start-up process, the starter generator operates as a motor to start the aircraft turbine and to assist it up to the self-sustaining speed. On the basis of rotation speed of the starter generator in the engine start-up process, there are three excitation modes for the exciter and two transient modes for the field current of the main generator (MG). In this study, for each excitation mode, the relationship between the excitation current (field current of the exciter) and the field current of MG is investigated by taking into account the influence of power electronic parts. This study also proposes a control method for the generator field current in all excitation modes which can detect optimum operating points for transition between excitation modes. Furthermore, a seamless transient control strategy is proposed for the transient modes of the generator field current. Simulation and experimental results are provided to demonstrate the feasibility of the proposed solution.

Original languageEnglish
Pages (from-to)2873-2883
Number of pages11
JournalIET Power Electronics
Issue number11
Publication statusPublished - 18 Sept 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Institution of Engineering and Technology 2019.


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