Linear motor.

摘要

A primary winding of a linear electric motor corresponds to a phase belt array of a two-pole, three-phase full pitch type electric rotary machine, radially split and developed into a linear form. In one embodiment the radial split is at the boundary between two phase belts belonging to a selected pair of adjacent phases. Alternatively one phase belt belonging to a selected phase is radially split so as to be circumferentially halved. These constructions improve the flux distribution and the thrust.