An electromagnetic rotary drive includes a rotor and a stator. The rotor magnetically driven without contact about an axial direction, and magnetically levitated without contact with respect to the stator. The rotor actively magnetically levitated in a radial plane and passively magnetically stabilized in the axial direction against tilting. The stator has coil cores, each including a longitudinal limb extending in the axial direction and a transverse limb arranged in the radial plane. The transverse limb extends from the longitudinal limb and is bounded by an end face. A concentrated winding is arranged on each of the longitudinal limbs surrounding a respective longitudinal limb. The end faces have a first distance in the radial direction from a first portion and a second distance in the radial direction from a second portion, the second distance greater than the first distance.

An electromagnetic rotary drive includes a rotor and a stator. The rotor magnetically driven without contact about an axial direction, and magnetically levitated without contact with respect to the stator. The rotor actively magnetically levitated in a radial plane and passively magnetically stabilized in the axial direction against tilting. The stator has coil cores, each including a longitudinal limb extending in the axial direction and a transverse limb arranged in the radial plane. The transverse limb extends from the longitudinal limb and is bounded by an end face. A concentrated winding is arranged on each of the longitudinal limbs surrounding a respective longitudinal limb. The end faces have a first distance in the radial direction from a first portion and a second distance in the radial direction from a second portion, the second distance greater than the first distance.

In a rotating electrical machine apparatus, a rotor portion provided in a cylindrical portion and a stator portion provided in a recessed portion in which the rotor portion is housed are aligned along the rotation axis of a rim such that a force is generated in a direction opposite to the direction of a load that acts along the rotation axis of the rim of loads that act on the rim following rotation of a blade.

In a rotating electrical machine apparatus, a rotor portion provided in a cylindrical portion and a stator portion provided in a recessed portion in which the rotor portion is housed are aligned along the rotation axis of a rim such that a force is generated in a direction opposite to the direction of a load that acts along the rotation axis of the rim of loads that act on the rim following rotation of a blade.

The embodiments relates to a stator used in resolvers, in which multiple slots are formed at constant intervals in the circumferential direction and have an excitation coil, a first output coil, and a second output coil are respectively wound around the multiple slots. The excitation coil is wound by a number of windings that is changed on the basis of a sinusoidal wave in accordance with the order of the multiple slots in the circumferential direction. After the first output coil is wound by a number of windings resulting from the division of the total number of windings by a constant ratio, the second output coil is wound, and then the rest of the first output coil is wound.

The embodiments relates to a stator used in resolvers, in which multiple slots are formed at constant intervals in the circumferential direction and have an excitation coil, a first output coil, and a second output coil are respectively wound around the multiple slots. The excitation coil is wound by a number of windings that is changed on the basis of a sinusoidal wave in accordance with the order of the multiple slots in the circumferential direction. After the first output coil is wound by a number of windings resulting from the division of the total number of windings by a constant ratio, the second output coil is wound, and then the rest of the first output coil is wound.

An electric motor is disclosed having a detachable stator tooth. In some implementations, coil windings of the electric motor may be coupled to one or more drivers independently of other coil windings. A method of repairing and manufacturing an electric motor having a detachable stator tooth is also disclosed.

An electric motor is disclosed having a detachable stator tooth. In some implementations, coil windings of the electric motor may be coupled to one or more drivers independently of other coil windings. A method of repairing and manufacturing an electric motor having a detachable stator tooth is also disclosed.

A device includes a first rotor segment and a second rotor segment, wherein the first rotor segment and the second rotor segment are configured to be directly coupled together about a shaft to form at least a portion of a unitary rotor. The device also includes a first stator segment and a second stator segment, wherein the first stator segment and the second stator segment are configured to be directly coupled together to form at least a portion of a unitary stator.

A device includes a first rotor segment and a second rotor segment, wherein the first rotor segment and the second rotor segment are configured to be directly coupled together about a shaft to form at least a portion of a unitary rotor. The device also includes a first stator segment and a second stator segment, wherein the first stator segment and the second stator segment are configured to be directly coupled together to form at least a portion of a unitary stator.