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Predictive torque control of induction motor with integrated DC-link voltage optimisation.
- Source :
- IET Power Electronics (Wiley-Blackwell); 2020, Vol. 13 Issue 15, p3396-3406, 11p
- Publication Year :
- 2020
-
Abstract
- This study proposes a new method leading to a reduction in the current and torque ripple of an induction motor (IM) drive controlled by predictive torque control (PTC). The method lies within the optimisation of a DC-link voltage magnitude by the PTC cost function. Using a three-phase silicon-controlled rectifier, the DC-link voltage can be adjusted in such way that the current and torque ripple, caused mainly by treating the inverter as a source of only eight voltage vectors, is significantly reduced. The DC-link optimisation algorithm is integrated into the PTC that is used for the torque and flux control. In another prediction stage, the influence of the DC-link voltage on the torque and flux ripple is directly evaluated and then optimised by a second cost function. The theoretical analysis of the DC-link voltage influence on the drive behaviour is supported by simulation and experimental results conducted on a 5.5 kW IM drive, which confirm the benefits of the PTC with the DC-link voltage optimisation, especially if the drive operates in a region below the nominal speed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17554535
- Volume :
- 13
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- IET Power Electronics (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 146848749
- Full Text :
- https://doi.org/10.1049/iet-pel.2019.1597