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Improved rotor position estimation in sensorless-controlled permanent-magnet synchronous machines having asymmetric-EMF with harmonic compensation
journal contribution
posted on 2017-09-12, 11:49 authored by Tzu-Chi Lin, Zi-Qiang Zhu, J.M. LiuThis paper investigates the performance of
sensorless control of switched-flux permanent-magnet
synchronous machines (SFPM) with different stator winding
topologies, such as all poles wound (double-layer
winding) and alternate poles wound (single-layer winding),
whose back electromotive force (EMF) exhibit different
waveform characteristics, i.e., sinusoidal, asymmetric, and
non-sinusoidal waves. Most importantly, it is found that the
single-layer SFPM machine is with asymmetric back-EMFs,
due to which the performance of sensorless control will
deteriorate. In order to minimize this influence, a control
strategy is developed for the improvement of accuracy of
rotor position estimation, which is based on the elimination
of back-EMF harmonics and not sensitive to the machine
parameters. In addition, it also shows that the developed
strategy is easy for implementation and the experimental
results confirm that the influence of asymmetric and
non-sinusoidal back-EMF can be effectively compensated.
Consequently, an improvement in the accuracy of rotor
position estimation is achieved at both steady and dynamic
states as compared with those conventionalmethods without
compensation.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Transactions on Industrial ElectronicsVolume
62Issue
10Pages
6131 - 6139Citation
LIN, T., ZHU, Z. and LIU, J., 2015. Improved rotor position estimation in sensorless-controlled permanent-magnet synchronous machines having asymmetric-EMF with harmonic compensation. IEEE Transactions on Industrial Electronics, 62 (10), pp.6131-6139.Publisher
© IEEEVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2015ISSN
0278-0046eISSN
1557-9948Publisher version
Language
- en