High performance brushless motor and drive for an electrical vehicle motorization

A brushless DC motor/generator (10) comprising;

• a cylindrical outer rotor (19) with twenty two magnetically coupled poles (20) constructed with segments of permanent magnet material alternatively magnetized north and south, a stator having a core (8) of ferromagnetic material spaced inwardly of said rotor and defining a magnetic clearance gap (9) therebetween, said stator core having twenty-four slots (18) and defining teeth (23) between said slots (18), a three phase winding with coils (7) of insulated wire being wound around the teeth, there being mutual inductance between the phases of said stator, an electronic supply (11) including a power electronics system and a current control circuit means (14) to control the torque of said motor (10) and therefore its arresting force for braking a wheel (53) of devices on which people are displaced by said DC motor motorizing said wheel, further comprising an additional two coils (7) per slot (18) with predetermined connection patterns:
• C, C′, C, C′, B′, B, B′, A′, A, A′, A, A′, C′, C, C′, B′, B, B′, B, B′, A′, A, A′, C′, resulting in reduced torque ripple without any slot or magnet skewing, and wherein the magnetic path of flux produced by each phase current is not independent.