| 摘要 |
An AC dynamo electric machine for a motor vehicle includes an AC dynamo machine body 100 composed of a rotor 10 constituted by a first rotatable shaft 12 supported rotatably by a pair of bearings 16, 17 , a rotor core 8 fixedly secured to the first rotatable shaft 12 and a field winding 9 wound on the rotor core 8 , a stator 3 composed of a stator core 1 disposed in opposition to the rotor 10 and a polyphase stator winding 2 wound on the stator core 1 and a bracket 80 supporting the pair of bearings 16, 17 and the stator 3 , and a rotational position detector for the control purpose composed of a second rotatable shaft 30 coupled to the first rotatable shaft 12 through a large magnetic reluctance portion 32, 33 , a second rotor 21 fixedly secured to the second rotatable shaft 30 and a second stator winding 22 a for generating an output voltage based on rotation of the second rotor 21.
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