ROTOR STRUCTURE OF MAGNET EMBEDDED ROTARY ELECTRIC MACHINE

摘要

PROBLEM TO BE SOLVED: To make an extension part of a permanent magnet hole of a rotor core immune to demagnetization in a magnet embedded rotary electric machine in which skewing is applied to the rotor core.SOLUTION: A permanent magnet hole (50) of a core sheet (P) includes a main body part (50m) and an extension part (50e). The extension part (50e) extends from both ends of the main body part (50m) to the vicinity of an edge of the core sheet (P). On the core sheet (P), another core sheet (P) is laminated while deviated at a unit skew angle (&Dgr;&thetas;). Between the two core sheets (P), an effective width (We') overlapping the two extension parts (50e) with each other is set equal to or wider than an effective width (Wm') of overlapping the two main body parts (50m) with each other (We'≥Wm').