Dual-Multiphase Motor Drives for Fault- Tolerant Applications: Power Electronic Structures and Control StrategiesReport as inadecuate




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1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - EA 2697 2 TAS - THALES ALENIA SPACE - Thales Alenia Space 3 TAES - THALES Avionics Electrical Systems

Abstract : This paper analyzes two fault-tolerant dualmultiphase motor drives, a series connected topology and a standard H-bridge topology.
Previous studies have shown thatthe series connected topology is appropriate to an aerospace application and has lower peak current in degraded mode in comparison with the H-bridge topology, which may consequently diminish the system’s weight and cost.
This paper extends the study to compare different control strategies of these structures under two fault conditions: short-circuit of an inverter’s switch and an open-phase of the machine.
The control strategiesanalyzed in this paper do not impact the fundamental current or the torque generation, but the amplitudes of some harmonics in degraded mode are expected to be narrowed down in order to reduce the inverter’s size.
Some analyses of maximum voltageand peak current in degraded mode have been used for inverter dimensioning.
Experimental results are shown and compared to the simulated ones to confirm the validity of this study.


Keywords : series connected multiphase dual-motor fault-tolerant control strategy short-circuit fault





Author: Tiago José Dos Santos Moraes - Ngac Ky Nguyen - Eric Semail - Fabien Meinguet - Mael Guerin -

Source: https://hal.archives-ouvertes.fr/



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