Abstract:
The invention mainly relates to a motor vehicle heat engine starter comprising a rotary electric machine (5) that has a rotor (9) and a stator (8) and comprises a plurality of magnetic poles (65) arranged on an internal circumference of a yoke (66). Each magnetic pole (65) is made up of a salient pole shoe (69) surrounded by a winding (70). Said starter is characterized in that an air gap (76), separating said rotor (9) from the magnetic poles (65) of said stator (8), varies according to the circumference thereof. The invention also relates to a corresponding pole shoe (69).
Abstract:
To reduce stray magnetic fields and the accompanying inefficiency in electric motors, the present specification provides a motor having a plurality of stator poles and rotor poles. The rotor poles are configured to rotate across the stator poles. Each of the rotor poles has a first rotor pole component and a second rotor pole component disposed on opposite sides of the plurality of stator poles. Each of the stator poles comprises at least a first sub-pole and a second sub-pole arranged such that at least a portion of magnetic flux from the first sub-pole flows through the first rotor pole component, through the second sub-pole, through the second rotor pole component and back through the first sub-pole. As the rotor poles rotate with respect to the stator poles, the magnetic flux exerts a rotating force on the plurality of rotor poles.
Abstract:
A stator (10) for a rotary electric machine has a tooth (14) whose width in a circumferential direction is substantially constant in a radial direction of the stator (10), and a concentrated winding coil (20) including winding conducting wires (21 to 26) around the tooth (14). A height (H2) of a first conducting wire (26) of the sixth turn at a tooth's (14) top end (15) side measured from a surface (17) of the tooth (14) is lower than a height (H1) of a conducting wire (25a) adjacent to a tooth's (14) root end (16) side of the conducting wire (26a) measured from the tooth surface (17). Conducting wires of the first to fifth turns, that is, second conducting wires (21 to 25), have the same height (H1) from the surface (17) of the tooth (14).