| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor generator capable of simplifying a post-stage processing circuit and improving detection accuracy by suppressing influences caused by a peripheral magnetic circuit or an external magnetic field.SOLUTION: A motor generator 100 includes: a magnetic rotary sensor 30 which is disposed in an inner periphery of a stator 10 and detects a rotating position of a rotor 20; and a first protrusion 25 which is disposed in the inner periphery of the stator 10 and within an axial area of the magnetic rotary sensor 30, fixed on a rotary shaft 3 in an integrally rotatable manner and formed from a magnetic material. The magnetic rotary sensor 30 includes a first permanent magnet 32 exerting a magnetic field upon the first protrusion 25, and a Hall element 33 for converting a magnetic field change caused by the first permanent magnet 32 into an electric signal. A stator core 11 forms a part of a magnetic circuit outgoing from the first permanent magnet 32 and returning to the first permanent magnet 32. |
