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Lookup NU author(s): Dr Shafiq OdhanoORCiD
This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2019.
For re-use rights please refer to the publisher's terms and conditions.
© 2013 IEEE. Finite-set model-predictive control (FS-MPC) has many advantages, such as a fast dynamic response and an intuitive implementation. For these reasons, it has been thoroughly researched during the last decade. However, the waveform produced by FS-MPC has a switching component whose spread spectrum remains a major disadvantage of the strategy. This paper discusses a modulated model-predictive control that guarantees a spectrum switching frequency in the linear modulation range and extends its optimized response to the overmodulation region. Due to the equivalent high gain of the predictive control and to the limit on the voltage actuation of the power converter, it is expected that the actuation voltage will enter the overmodulation region during the large reference changes or in response to load impacts. An optimized overmodulation strategy that converges toward the FS-MPC 's response for large tracking errors is proposed for this situation. This technique seamlessly combines PWM's good steady-state switching performance with FS-MPC 's high dynamic response during large transients. The constant switching frequency is achieved by incorporating modulation of the predicted current vectors in the model-predictive control of the currents in a similar fashion as the conventional space-vector pulsewidth modulation is used to synthesize an arbitrary voltage reference. Experimental results showing the proposed strategy's good steady-state switching performance, its FS-MPC -like transient response, and the seamless transition between modes of operation are presented for a permanent magnet synchronous machine drive.
Author(s): Garcia CF, Silva CA, Rodriguez JR, Zanchetta P, Odhano SA
Publication type: Article
Publication status: Published
Journal: IEEE Journal of Emerging and Selected Topics in Power Electronics
Year: 2019
Volume: 7
Issue: 1
Pages: 404-413
Print publication date: 01/03/2019
Online publication date: 19/04/2018
Acceptance date: 30/03/2018
Date deposited: 30/03/2020
ISSN (print): 2168-6777
ISSN (electronic): 2168-6785
Publisher: IEEE
URL: https://doi.org/10.1109/JESTPE.2018.2828198
DOI: 10.1109/JESTPE.2018.2828198
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