Patent ID: 8946967
Filing Date: 2015-02-03
Classification: H02K

Abstract:
1. An electric rotating machine, comprising: a rotor having a plurality of permanent magnets, including first and second permanent magnets adjacent each other, embedded in a columnar rotor main body and configured to rotate about a rotation axis; and a cylindrical stator arranged outward of the rotor in a radial direction of the rotor so as to face an outer peripheral surface of the rotor main body via a gap, the stator including wherein the magnetic resistance changing mechanism is configured to mechanically change the stator magnetic path between a first state and a second state in which the magnetic resistance of the stator magnetic path is larger than that of the stator magnetic path in the first state, wherein a main magnetic circuit C wherein a magnetic short-circuit C wherein a magnetic circuit between permanent magnets C wherein in the first state, the following relational expression is satisfied: wherein in the second state, both the following relational expressions are satisfied: