1. Enhanced Availability of Drivetrain Through Novel Multiphase Permanent-Magnet Machine Drive.
- Author
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Patel, Vipulkumar I., Wang, Jiabin, Nugraha, Dian Tresna, Vuletic, Radovan, and Tousen, Jonas
- Subjects
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PERMANENT magnet motors , *TRACTION drives , *BRUSHLESS electric motors , *ROTORS , *WINDING machines , *AUTOMOBILE power trains - Abstract
This paper deals with a novel multiphase permanent-magnet (PM) machine drive to enhance drivetrain availability in electric traction applications. It describes the development of new winding configurations for six-phase PM brushless machines with 18 slots and eight poles, which eliminate and/or reduce undesirable space harmonics in the stator magnetomotive force. In addition to improved power/torque density and efficiency with a reduction in eddy current loss in rotor PMs and copper loss in end-windings, the developed winding configuration also enhances availability of drivetrain, in a variety of applications requiring a degree of fault tolerance, by employing it as two independent three-phase windings in a six-phase interior-PM machine, which is designed and optimized for a given set of specifications for an electric vehicle, under thermal, electrical, and volumetric constraints. This paper also describes the design and development of a six-phase inverter with independent control for both sets of three-phase windings. The designs of the motor and the inverter are validated by a series of preliminary tests on the prototype machine drive. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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