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, therebeing 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, characterized in that 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.