Axial Flux Motor for Compact High Torque Applications

Axial flux permanent magnet motor uses a rotor and stator arrangement in which the primary air-gap flux travels substantially parallel to the shaft axis. Permanent magnets provide the rotor excitation, while the stator winding produces the rotating magnetic field required for torque production.
The practical design of an axial flux motor depends on more than its axial geometry. The electromagnetic circuit, magnet arrangement, winding design, air-gap control, bearing system, shaft structure, cooling method, inverter, and mechanical interface must be developed as one drive system. For this reason, axial flux motor selection should be based on the driven machine, operating cycle, available installation space, and control requirements.