In this paper post-fault-tolerant control strategies for quad-inverter multiphase-multilevel induction motor drives are investigated. More specifically, four standard 2- level three-phase voltage source inverters (VSIs) supplying the open-end windings of a dual three-phase induction motor (asymmetric six-phase machine) is considered, quadrupling the power capability of a single VSI with given voltage and current ratings. In healthy conditions, the control algorithm is able to generate multilevel voltage waveforms, equivalent to the ones of a 3-level inverter and to share the total motor power among the four dc sources in each switching period. This sharing capability is investigated under post-fault operating conditions, when one VSI must be completely insulated due to a severe failure on it. In this case, the conversion power units can operate with a reduced power rating by a proper modulation of the remaining three VSIs. The whole ac motor drive has been numerically implemented to verify the effectiveness of the proposed control strategies under healthy and post-fault operating conditions.

G. Grandi, P. Sanjeevikumar, Y. Gritli, F. Filippetti (2012). Fault-Tolerant Control Strategies for Quad Inverter Induction Motor Drives with One Failed Inverter. PISCATAWAY, NJ 08854 : IEEE [10.1109/ICElMach.2012.6349992].

Fault-Tolerant Control Strategies for Quad Inverter Induction Motor Drives with One Failed Inverter

GRANDI, GABRIELE;FILIPPETTI, FIORENZO
2012

Abstract

In this paper post-fault-tolerant control strategies for quad-inverter multiphase-multilevel induction motor drives are investigated. More specifically, four standard 2- level three-phase voltage source inverters (VSIs) supplying the open-end windings of a dual three-phase induction motor (asymmetric six-phase machine) is considered, quadrupling the power capability of a single VSI with given voltage and current ratings. In healthy conditions, the control algorithm is able to generate multilevel voltage waveforms, equivalent to the ones of a 3-level inverter and to share the total motor power among the four dc sources in each switching period. This sharing capability is investigated under post-fault operating conditions, when one VSI must be completely insulated due to a severe failure on it. In this case, the conversion power units can operate with a reduced power rating by a proper modulation of the remaining three VSIs. The whole ac motor drive has been numerically implemented to verify the effectiveness of the proposed control strategies under healthy and post-fault operating conditions.
2012
Proceedings of XX International Conference on Electrical Machines - IEEE ICEM 2012
957
964
G. Grandi, P. Sanjeevikumar, Y. Gritli, F. Filippetti (2012). Fault-Tolerant Control Strategies for Quad Inverter Induction Motor Drives with One Failed Inverter. PISCATAWAY, NJ 08854 : IEEE [10.1109/ICElMach.2012.6349992].
G. Grandi; P. Sanjeevikumar; Y. Gritli; F. Filippetti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/117150
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