Axial Electric Motor Design

His brushed dc motor design held the magnets stationary with a spinning armature activated by sliding brushes as the rotor.

Axial electric motor design.

The technology is scalable from small motors i e electric vehicles to large generators i e wind turbine generators. The coil overhang in a traditional radial flux motor is not beneficial for its functioning left. His brushed dc motor design held the magnets stationary with a spinning armature activated by sliding brushes as the rotor. In practice the center of the axial gap motor is typically hollow allowing for hollow shaft designs.

Embedded magnets support high. In radial flux motors any copper not. Avid technology has prepared this in depth look at electric motor technology used in applications from electric vehicles to robotics and aerospace. Axial flux motors were studied by british inventor and ev enthusiast cedric lynch as early as 1979.

The motors have zero overhang. While the vast majority of electric motors currently in circulation are radial flux designs magnax claims the key to the high power density it s achieving is the direct drive axial flux design. Lightweight compact and relatively powerful the motor was ideal for electric motorcycles. Furthermore thanks to the axial flux design very little copper is wasted on overhanging loops on the windings.

The rotor construction of a lynch motor a type of axial brushed dc motor. Axial flux motors are a major improvement over standard radial flux motors which leave a significant amount of copper overhanging on the ends of the coils. Cooling in case of radial flux machines the heat has to be transported through the stator to the outside of the machine. The brushes and connections are seen in the centre the alternating permanent magnets not shown align with the segments of the rotor in which current is flowing.

Many configurations are possible depending on the design goals. Lightweight compact and relatively powerful the motor was ideal for electric motorcycles. That is 100 of the windings are active. At the right the concentrated windings of the magnax axial flux motor.