University of Oulu

R. P. Jastrzebski et al., "Dynamics of High-Power Multi-Rotor System," 2022 International Conference on Electrical Machines (ICEM), 2022, pp. 1225-1231, doi: 10.1109/ICEM51905.2022.9910631.

Dynamics of high-power multi-rotor system

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Author: Jastrzebski, Rafal P.1; Putkonen, Atte1; Sikanen, Eerik2;
Organizations: 1Department of Electrical Engineering, Lappeenranta-Lahti University of Technology LUT, Lappeenranta, Finland
2Department of Mechanical Engineering, Lappeenranta-Lahti University of Technology LUT, Lappeenranta, Finland
3Materials and Mechanical Engineering, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 3.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-10-17


Typically, active magnetic bearings have been applied to high-speed rotors in medium to high power range to replace ball, roller, and oil-film bearings. They require less maintenance and provide number of unique benefits owing to contactless suspension and active control. Integrated compressor or turbines result in predictable rotor dynamics. This allows use of model-based controllers. The model-based centralized controllers outperform decoupled transfer function controllers, but they do require accurate plant models. For integrated wheels on a single rotor the control models comprise a rigid rotor and lowest frequency bending modes. The bending mode parameters related to node locations can be identified yielding controllers tuned to the applications. This work introduces drive train modelling and magnetic levitation control of 2 MW rotor and external load with flexible coupling. The model-based control is tested in the experimental setup and drive train frequency responses are compared to the modelled multi-rotor drive train dynamics.

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Series: International Conference on Electrical Machines
ISSN: 2381-4802
ISSN-E: 2473-2087
ISSN-L: 2381-4802
ISBN: 978-1-6654-1432-6
ISBN Print: 978-1-6654-1433-3
Pages: 1225 - 1231
DOI: 10.1109/icem51905.2022.9910631
Host publication: 2022 international conference on electrical machines (ICEM)
Conference: International Conference on Electrical Machines
Type of Publication: A4 Article in conference proceedings
Field of Science: 214 Mechanical engineering
213 Electronic, automation and communications engineering, electronics
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