Optimisation and adaptation of an existing aeronautic motor to an HVDC network

This paper presents the evolution of an airliner fan BLDC motor to adapt it to an HVDC electrical network. The guiding principle of the design is to increase reliability. A nonoverlapping teeth winding is introduced to separate the motor phases in order to limit winding failures and especially partial discharges. The machine is also optimised using spoke-type magnets flux concentration rotor, in order to reduce total mass. The new machine is compared to the existing one with a finite elements method analysis.