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US 11,539,253 B2Granted
Rotating electric machine and method of controlling rotating electric machine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHiroyuki Hattori
Life of this patent
Estimating the term…
Abstract
A rotating electric machine includes: a rotary shaft member; a rotor including an annular rotor core having magnet housing holes; a stator including an annular stator core and a stator coil; a field yoke; and a field coil provided in the field yoke. Further, a bridge portion is provided between two magnet housing holes, an end surface in an axial direction at one end in a radial direction of the field yoke and an end surface in the axial direction of the bridge portion face each other in the axial direction, and an end surface in the axial direction at another end in the radial direction of the field yoke, and an end surface in the axial direction of the rotor core or an end surface in the axial direction of the stator core face each other in the axial direction.
Claims9
A rotating electric machine comprising:
- a rotary shaft member that rotates about an axis;
- a rotor including an annular rotor core in which a plurality of pairs of magnet housing holes is arranged in a circumferential direction in an outer periphery and which is fixed to the rotary shaft member, each of the pairs of magnet housing holes respectively housing permanent magnets and being arranged in such a manner as to be opened in a V-shape toward an outer side in a radial direction;
- a stator including an annular stator core arranged at an interval in the radial direction with respect to the rotor, and a stator coil provided around the stator core;
- a field yoke arranged on an outer side of the rotor in an axial direction of the rotary shaft member;
- and
- a field coil that is provided in the field yoke and that generates field magnetic flux when energized, wherein
- a bridge portion is provided between two magnet housing holes that form the pair of magnet housing holes in the rotor core,
- wherein the field yoke includes an outermost radial end portion and an innermost radial end portion, and the outermost radial end portion of the field yoke is in a same radial position as the bridge portion or the stator core, and
- wherein, when the outermost radial end portion of the field yoke is in the same radial position as the bridge portion, the innermost radial end portion is in a same radial position as the rotor core.
6 more elements
A rotating electric machine comprising:
- a rotary shaft member that rotates about an axis;
- a rotor including an annular rotor core in which a plurality of pairs of magnet housing holes is arranged in a circumferential direction in an outer periphery and which is fixed to the rotary shaft member, each of the pairs of magnet housing holes respectively housing permanent magnets and being arranged in such a manner as to be opened in a V-shape toward an outer side in a radial direction;
- a stator including an annular stator core arranged at an interval in the radial direction with respect to the rotor, and a stator coil provided around the stator core;
- a field yoke arranged on an outer side of the rotor in an axial direction of the rotary shaft member;
- and
- a field coil that is provided in the field yoke and that generates field magnetic flux when energized, wherein
- a bridge portion is provided between two magnet housing holes that form the pair of magnet housing holes in the rotor core,
- wherein the field yoke includes an outermost radial end portion and an innermost radial end portion, and the outermost radial end portion of the field yoke is in a same radial position as the bridge portion or the stator core, and
- wherein, when the outermost radial end portion is in the same radial position as the stator core, the innermost radial end portion is in the same radial position as the bridge portion.
6 more elements
A method of controlling a rotating electric machine,
- the rotating electric machine including
- a rotary shaft member that rotates about an axis,
- a rotor including an annular rotor core in which a plurality of pairs of magnet housing holes is arranged in a circumferential direction in an outer periphery and which is fixed to the rotary shaft member, each of the pairs of magnet housing holes respectively housing permanent magnets and being arranged in such a manner as to be opened in a V-shape toward an outer side in a radial direction,
- a stator including an annular stator core arranged at an interval in the radial direction with respect to the rotor, and a stator coil provided around the stator core,
- a field yoke arranged on an outer side of the rotor in an axial direction of the rotary shaft member, and
- a field coil that is provided in the field yoke and that generates field magnetic flux when energized,
- a bridge portion being provided between two magnet housing holes that form the pair of magnet housing holes in the rotor core,
- wherein the field yoke includes an outermost radial end portion and an innermost radial end portion, and the outermost radial end of the field yoke is in a same radial position as the bridge portion or the stator core, and
- wherein, when the outermost radial end portion of the field yoke is in the same radial position as the bridge portion, the innermost radial end portion is in a same radial position as the rotor core,
- the method comprising:
- executing a first control mode of not performing energization of the field coil when a rotation speed of the rotating electric machine is to be increased;
- and
- executing a second control mode of performing energization of the field coil when output torque of the rotating electric machine is to be increased.
10 more elements
Dependencies are inferred from the claim text.