Initial rotor position estimation method for aircraft wound-rotor synchronous starter/generators

Shuai Mao; Weiguo Liu; Peng Ma; Zan Zhang; Ying Hu

Initial rotor position estimation method for aircraft wound-rotor synchronous starter/generators

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Author(s): Shuai Mao¹ ; Weiguo Liu¹ ; Peng Ma² ; Zan Zhang¹ ; Ying Hu³
- Affiliations: 1: School of Automation , Northwestern Polytechnical University , 127 West Youyi Road, Xi'an , People's Republic of China ;
  2: Aviation Key Laboratory of Science and Technology on Aerospace Power System , 17 2nd Jin Ye Road, Xi'an , People's Republic of China ;
  3: School of Electrical and Information Engineering , Southwest Minzu University , 16 1st Ring Road, Chengdu , People's Republic of China
Source: Volume 2018, Issue 13, 2018, p. 541 – 545
DOI: 10.1049/joe.2018.0049 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 10/01/2018, Accepted 17/01/2018, Published 02/02/2018

An initial rotor position estimation method which is independent of the magnetic saliency is proposed for the main generator (MG) of aircraft three-stage wound-rotor synchronous starter/generators. Voltage signals are injected into the stator of the MG and the field current response of the MG is evaluated in this method. Owing to the brushless excitation structure, the field current of the MG cannot be measured directly. Thus, estimation of the field current of the MG is performed first. Then, high-frequency sinusoidal and pulse voltages are injected into the stator windings of the MG separately and the induced field current of the MG, estimated from the main exciter side, is regarded as the indicator for the initial rotor position of the MG. Simulation tests are carried out to verify the method and the results are presented and analysed.

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Initial rotor position estimation method for aircraft wound-rotor synchronous starter/generators

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