Axial-flux permanent-magnet (AFPM) motors are a kind of important motor with compact structure, high power density and torque density. In this review, the progress AFPM their key technologies analyzed described, emphasis on topological structures, design optimization methods control techniques. Based these analyses, main findings review following: (1) yokeless segment armature (YASA)-type have ...

In this paper, a type of novel composite structure coil applied in the coreless stator is proposed and studied to improve output performance efficiency axial flux permanent magnet (AFPM) machine. which effective conductor changed be wedge-shaped by rolling technology so that turns coils filling factor can further increased, ends are kept cylinder with larger diameter reduce DC copper loss. Mean...

Both the cogging and electromagnetic torques depends on the shape of the flux density distribution in the airgap region. A two-dimensional (2-D) analytical method for predicting the open- circuit airgap field distribution in brushless permanent magnet motors, considering the direction of magnetization, i.e., radial or parallel, and the effect of real shape of stator slot-openings is presented i...