Rotating electric machine and method and device for positioning rotational position sensor for the machine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsYoshinobu Utsumi, Shinji Nishimura, Yoshihito Asao
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Abstract
The rotating electric machine has a stator coil wound around a stator, a magnetic pole and a signal rotor fixed to a rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, characterized by further comprising an adjuster for adjusting the position of the signal rotor or the detection stator by supplying a direct current to a predetermined phase of the stator coil and then a direct current to a different phase from the predetermined phase to rotate the rotor by a predetermined angle or more and constrain the rotor.
Claims8
A method for positioning a rotational position sensor for a rotating electric machine which comprises stator including a stator coil, and a rotor including a magnetic pole wherein the rotational position sensor comprises a signal rotor fixed to a rotation axis of the rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, the method comprising:
- constraining the rotor from rotating by energizing the stator coil;
- detecting the rotor to be rotated by at least a predetermined angle;
- and
- adjusting the position of the detection stator or the signal rotor so that the detection stator outputs a predetermined signal.
A method for positioning a rotational position sensor for a rotating electric machine which comprises stator including a stator coil, and a rotor including a magnetic pole iron core and a field coil, wherein the rotational position sensor comprises a signal rotor fixed to a rotation axis of the rotor, and a detection stator, disposed opposite the signal rotor, for detecting the rotational position of the rotor, the method comprising:
- fixing the magnetic pole iron core and the signal rotor in a predetermined positional relation in a rotational direction;
- constraining the rotor from rotating by energizing the stator coil and the field coil;
- detecting the rotor to be rotated by at least a predetermined angle;
- and
- adjusting the position of the detection stator so that the detection stator may have a predetermined signal.
A method for positioning a rotational position sensor for a rotating electric machine which comprises stator including a stator coil, and a rotor including a magnetic pole composed of a permanent magnet, wherein the rotational position sensor comprises a signal rotor fixed to a rotation axis of the rotor, and a detection stator disposed opposite to the signal rotor, for detecting the rotational position of the rotor, the method comprising:
- fixing the magnetic pole and the signal rotor in a predetermined positional relation in a rotational direction;
- constraining the rotor from rotating by energizing the stator coil;
- detecting the rotor to be rotated by at least a predetermined angle;
- and
- adjusting the position of the detection stator so that the detection stator outputs a predetermined signal.
Dependencies are inferred from the claim text.