Fault-tolerant control strategies for quad-inverter based multiphase-multilevel converters are proposed and experimentally verified in this paper. Explicitly, the conversion scheme consists of four standard 2-level three-phase voltage source inverters (VSIs), able to supply a dual three-phase induction motor in open-end stator winding configuration (asymmetric six-phase machine), quadrupling the utility power of a single VSI within given voltage and current ratings. The developed modulation scheme has the capability to generate multilevel output voltage waveforms in healthy conditions, equivalent to the one of a 3-level VSI, and to share the total motor power among the four dc sources in each switching cycle. This sharing potentiality is investigated under post-fault operating conditions, when one VSI completely insulated due to a severe failure on it. In such circumstances, the quad-inverter system can perform with reduced power rating by a proper modulation of the remaining three healthy VSIs. The complete multiphase-multilevel conversion system with the proposed control algorithm under healthy and post-fault operating conditions has been verified by experimental implementation in open-loop control aspect using two dsp TMS320-F2812 processors with two three-phase passive loads in openend configuration.

Experimental Investigation of Fault-Tolerant Control Strategies for Quad-Inverter Converters / G. Grandi; P. Sanjeevikumar; Y. Gritli; F. Filippetti. - STAMPA. - (2012), pp. 1-8. (Intervento presentato al convegno Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS tenutosi a Bologna, ITALY nel 16-18 october, 2012) [10.1109/ESARS.2012.6387483].

Experimental Investigation of Fault-Tolerant Control Strategies for Quad-Inverter Converters

GRANDI, GABRIELE;FILIPPETTI, FIORENZO
2012

Abstract

Fault-tolerant control strategies for quad-inverter based multiphase-multilevel converters are proposed and experimentally verified in this paper. Explicitly, the conversion scheme consists of four standard 2-level three-phase voltage source inverters (VSIs), able to supply a dual three-phase induction motor in open-end stator winding configuration (asymmetric six-phase machine), quadrupling the utility power of a single VSI within given voltage and current ratings. The developed modulation scheme has the capability to generate multilevel output voltage waveforms in healthy conditions, equivalent to the one of a 3-level VSI, and to share the total motor power among the four dc sources in each switching cycle. This sharing potentiality is investigated under post-fault operating conditions, when one VSI completely insulated due to a severe failure on it. In such circumstances, the quad-inverter system can perform with reduced power rating by a proper modulation of the remaining three healthy VSIs. The complete multiphase-multilevel conversion system with the proposed control algorithm under healthy and post-fault operating conditions has been verified by experimental implementation in open-loop control aspect using two dsp TMS320-F2812 processors with two three-phase passive loads in openend configuration.
2012
Proceedings of IEEE International Conference on Electrical Systems for Aircraft, Railways, Ship Propulsion and Road Vehicles - 2012 Edition
1
8
Experimental Investigation of Fault-Tolerant Control Strategies for Quad-Inverter Converters / G. Grandi; P. Sanjeevikumar; Y. Gritli; F. Filippetti. - STAMPA. - (2012), pp. 1-8. (Intervento presentato al convegno Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS tenutosi a Bologna, ITALY nel 16-18 october, 2012) [10.1109/ESARS.2012.6387483].
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/11585/126871
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