Provided is a rotor for a rotary electrical machine in which the mechanical strength of the rotor against centrifugal force is increased. A rotary electrical machine provided with a stator, and a rotor having a rotor core (252) provided to the stator so that a gap is present, the rotor being provided with a magnet insertion hole and a permanent magnet (254) inserted into the magnet insertion hole; wherein a relief part (263) having a facing surface (266) formed so as to face the surface of the permanent magnet (254) with a gap present therebetween is provided at a portion of the magnet insertion hole corresponding to a corner part of the permanent magnet (254); the facing surface (266) of the relief part (263) has inflection points (264a-264d); and angles (267a, 267b) flanking two facing surfaces continuous with each of the inflection points (264b, 264c) are both formed to be obtuse.
Rotary electrical machine, and rotor for rotary electrical machine
17.02.2016
Patent
Elektronische Ressource
Englisch
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