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In this paper an experimental comparison between two fault-tolerant fractional-slot permanent magnet motor drives is presented. Five-phase and dual three-phase motor drives are considered. The aim is to highlight the main differences between the two motor drives in terms of their performance under faulty conditions. Open circuit and short circuit faulty operating conditions are taken into account...
This paper deals with a fractional-slot permanent magnet motor with a dual winding supplied by two parallel converters, so as to increase the drive fault-tolerance. In the event of fault, one of the two three-phase windings is disconnected and the motor is operated feeding the healthy winding only.
In modern vehicles, the integrated starter-alternator (ISA) is an electrical machine that has to crank up the internal combustion engine, and to generate electric power during normal driving. Therefore, the ISA has to exhibit high torque and a wide constant-power speed range. This paper reports some design criteria, analysis and test results of an ISA that has been developed using a fractional-slot...
This paper compares the post-fault current control strategies of a five-phase permanent magnet motor adopting a half-bridge and a full-bridge converter. The analysis covers both the open circuit of one and two phases. The adoption of the full-bridge converter allows to overcome the constraint of having a zero sum of the currents and this is particularly advantageous under the fault of two phases....
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