Wheel assembly, in particular for a wheel chair comprising. The wheel assembly includes a wheel shaft extending along a shaft axis and which is configured to be non-rotatably connectable to a frame of the wheelchair. A wheel with a wheel hub is mounted on the wheel shaft so as to be rotatable around the shaft axis. The wheel assembly is provided with a hub motor having a power input and with a rim handle connected to the wheel and being rotatable relative to the wheel over an angle. A resolver assembly of the wheel assembly comprises a wheel resolver which is configured to generate a wheel resolver signal, a rim handle resolver which is configured to generate a rim handle resolver signal, and at least one resolver assembly output for outputting the wheel resolver signal and the rim handle resolver signal.

Wheel assembly, in particular for a wheel chair comprising. The wheel assembly includes a wheel shaft extending along a shaft axis and which is configured to be non-rotatably connectable to a frame of the wheelchair. A wheel with a wheel hub is mounted on the wheel shaft so as to be rotatable around the shaft axis. The wheel assembly is provided with a hub motor having a power input and with a rim handle connected to the wheel and being rotatable relative to the wheel over an angle. A resolver assembly of the wheel assembly comprises a wheel resolver which is configured to generate a wheel resolver signal, a rim handle resolver which is configured to generate a rim handle resolver signal, and at least one resolver assembly output for outputting the wheel resolver signal and the rim handle resolver signal.

In a rotating electric machine system, a rotating shaft of a rotating electric machine includes a first end part and a second end part. The first end part includes a projecting distal end that projects out to the exterior of a rotating electric machine housing. A rotational parameter detector is disposed on the projecting distal end. Electric terminal portions electrically connected to the rotating electric machine are disposed at one end part of the rotating electric machine housing. When viewed from a side along an axial direction of the rotating electric machine system, the electric terminal portions and the rotational parameter detector are arranged in parallel.

In a rotating electric machine system, a rotating shaft of a rotating electric machine includes a first end part and a second end part. The first end part includes a projecting distal end that projects out to the exterior of a rotating electric machine housing. A rotational parameter detector is disposed on the projecting distal end. Electric terminal portions electrically connected to the rotating electric machine are disposed at one end part of the rotating electric machine housing. When viewed from a side along an axial direction of the rotating electric machine system, the electric terminal portions and the rotational parameter detector are arranged in parallel.

A stator structure of an embodiment includes a stator core that comprises: a ring-shaped main body; and a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body. The main body comprises a plurality of elongated holes that are formed in an arc shape along the circumferential direction of the main body and that are arranged along the circumferential direction of the main body, and a plurality of holes that are arranged along the circumferential direction of the main body between the teeth and the elongated holes in the radial direction of the main body. At least one of the holes is disposed between beams and the teeth located close to the beams, the beams being provided between the adjacent elongated holes.

A stator structure of an embodiment includes a stator core that comprises: a ring-shaped main body; and a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body. The main body comprises a plurality of elongated holes that are formed in an arc shape along the circumferential direction of the main body and that are arranged along the circumferential direction of the main body, and a plurality of holes that are arranged along the circumferential direction of the main body between the teeth and the elongated holes in the radial direction of the main body. At least one of the holes is disposed between beams and the teeth located close to the beams, the beams being provided between the adjacent elongated holes.

In order to improve the angle detection accuracy, when an exciting order is 2, a double axial angle is 5, and the number of resolver teeth is 8, an inner diameter deformation order is one of 4, 6, 7, 8, or 9, when the exciting order is 5, the double axial angle is 4, and the number of resolver teeth is 10, the inner diameter deformation order is one of 3, 5, 7, 9 or 10, when the exciting order is 3, the double axial angle is 4, and the number of resolver teeth is 12, the inner diameter deformation order is one of the 2, 3, 5, 6, 7, 9, 10, 11 or 12, and the resolver stator is fixed to the resolver device mounting part by the number of fixing points corresponding to any one of the inner diameter deformation order.

In order to improve the angle detection accuracy, when an exciting order is 2, a double axial angle is 5, and the number of resolver teeth is 8, an inner diameter deformation order is one of 4, 6, 7, 8, or 9, when the exciting order is 5, the double axial angle is 4, and the number of resolver teeth is 10, the inner diameter deformation order is one of 3, 5, 7, 9 or 10, when the exciting order is 3, the double axial angle is 4, and the number of resolver teeth is 12, the inner diameter deformation order is one of the 2, 3, 5, 6, 7, 9, 10, 11 or 12, and the resolver stator is fixed to the resolver device mounting part by the number of fixing points corresponding to any one of the inner diameter deformation order.

A rotating electrical machine includes a stator, a rotor with a permanent magnet, a first number of one or more first coils, and a second number of one or more second coils. The second number is different from the first number. The one or more first coils are disposed on the stator. The one or more second coils are disposed on the rotor. The one or more first coils and the one or more second coils are disposed on the stator and the rotor, respectively, in such a manner as to closely oppose each other in a state where the rotor is at a predetermined rotation angle position. The one or more first coils are arranged to induce a voltage in response to a relative position with respect to the one or more second coils.

A rotating electrical machine includes a stator, a rotor with a permanent magnet, a first number of one or more first coils, and a second number of one or more second coils. The second number is different from the first number. The one or more first coils are disposed on the stator. The one or more second coils are disposed on the rotor. The one or more first coils and the one or more second coils are disposed on the stator and the rotor, respectively, in such a manner as to closely oppose each other in a state where the rotor is at a predetermined rotation angle position. The one or more first coils are arranged to induce a voltage in response to a relative position with respect to the one or more second coils.