Artículo
Assessment of Virtual-Voltage-based Model Predictive Controllers in Six-phase Drives under Open-Phase Faults
Autor/es | González Prieto, Ignacio
Durán, Mario J. Bermúdez Guzmán, Mario Barrero, Federico Martín Torres, Cristina |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Eléctrica Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Fecha de publicación | 2020 |
Fecha de depósito | 2023-11-13 |
Publicado en |
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Resumen | The inherent fault-tolerant capability of
multiphase machines is highly appreciated, but it requires fault
detection and localization together with a reconfiguration of the
control scheme. When the multiphase machine ... The inherent fault-tolerant capability of multiphase machines is highly appreciated, but it requires fault detection and localization together with a reconfiguration of the control scheme. When the multiphase machine is regulated using finite-control set model predictive control (MPC) strategies, the reconfiguration involves the use of different transformation matrices, cost functions and current references for each of the multiple open-phase fault (OPF) scenarios. Aiming to simplify this procedure and add further robustness, this paper explores the possibility to achieve a natural faulttolerant capability by maintaining the pre-fault control strategy after the fault occurrence. For this purpose, this work firstly analyzes the two main reasons why MPC-regulated multiphase drives misbehave in the event of an OPF: the voltage vector shifting and the search for incompatible goals. In a next step, a version of the MPC that includes virtual voltage vectors (VVs) is tested for the first time in post-fault situation and it is compared to conventional MPC technique. Extensive experimental results reveal that, while MPC misbehaves in the event of an OPF, the VV-MPC provides a satisfactory ripplefree post-fault performance. This finding has two significant implications for industrial applications: the post-fault operation is highly simplified and, at the same time, the fault-tolerant multiphase drive becomes immune to fault detection errors and delays. |
Agencias financiadoras | Ministerio de Ciencia, Innovación y Universidades (MICINN). España |
Identificador del proyecto | RTI2018-096151-B-100 |
Cita | González-Prieto, I., Durán, M.J., Bermúdez, M., Barrero, F. y Martín Torres, C. (2020). Assessment of Virtual-Voltage-based Model Predictive Controllers in Six-phase Drives under Open-Phase Faults. IEEE Journal of Emerging and Selected Topics in Power Electronics, 8 (3), 2634-2644. https://doi.org/10.1109/JESTPE.2019.2915666. |
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