Electric rotary machine e.g. electric-inner permanent magnet rotary machine for use in electric car, has stator receiving stator windings in slots between stator teeth, where connection angle is provided on side of longitudinal axis

摘要

The machine (10) has a stator (11) receiving stator windings in slots (18) between stator teeth (15), and a rotor (12) rotated around a rotor axis regarding the stator. Pairs of permanent magnets (16) are provided in the rotor, and the rotor includes pairs of medium controlling grooves (21) on an outer circumference of the magnets having an average controlling groove (22) and side controlling grooves. A connection angle at specified range between a transverse axis-side of inner surface portion and an extension side of an inner surface portion is provided on a side of a longitudinal axis.