Discrete-Time Dynamic-Decoupled Current Control for LCL-Equipped High-Speed Permanent Magnet Synchronous Machines

Journal Article (2022)
Author(s)

Yu Yao (Southeast University, TU Delft - DC systems, Energy conversion & Storage)

Yunkai Huang (Southeast University)

Fei Peng (Southeast University)

Jianning Dong (TU Delft - DC systems, Energy conversion & Storage)

Zichong Zhu (Nanjing Tech University)

Research Group
DC systems, Energy conversion & Storage
Copyright
© 2022 Y. Yao, Yunkai Huang, Fei Peng, J. Dong, Zichong Zhu
DOI related publication
https://doi.org/10.1109/TIE.2021.3127051
More Info
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Publication Year
2022
Language
English
Copyright
© 2022 Y. Yao, Yunkai Huang, Fei Peng, J. Dong, Zichong Zhu
Research Group
DC systems, Energy conversion & Storage
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en
Issue number
12
Volume number
69
Pages (from-to)
12414-12425
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Abstract

This article proposes a discrete-time dynamic-decoupled current controller for an LCL-equipped high-speed permanent magnet synchronous machine with only the motor currents measured. The controller is designed in the synchronous coordinate based on a complex z-domain transfer function. The main contribution of the proposed current controller is the robust dynamic decoupling performance to achieve better transient behavior. Moreover, an effective coefficient selection method is developed to acquire sufficient phase margin and gain margin, even with the system parameters varying ± 50%. Additionally, the stable region of the LCL resonance with the proposed method is discussed. Finally, the effectiveness of the proposed method is verified by driving the tested motor to 100 kr/min.

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