摘要:
A permanent magnet motor includes a permanent magnet rotor, a stator surrounding the rotor having a plurality of teeth radially inwardly oriented toward a longitudinal axis of the stator wherein each tooth has a tooth length and a tooth tip surface geometry. An asymmetric air gap is defined by variations in the tooth lengths and tooth tip surface geometries.
摘要:
A rotor for a permanent magnet electric machine includes an axis of rotation, an outer surface, and a cross-section orthogonal to the axis of rotation with a non-circular contour of the outer surface defined by a plurality of radii angularly distributed around the axis of rotation.
摘要:
A rotor for a permanent magnet electric machine includes an axis of rotation, an outer surface, and a cross-section orthogonal to the axis of rotation with a non-circular contour of the outer surface defined by a plurality of radii angularly distributed around the axis of rotation.
摘要:
An insulator assembly for a stator assembly of an electric machine includes an annular ring attached to a stator core, and a plurality of coil separators supported by the annular ring and extending from the annular ring axially along a longitudinal axis. One of the coil separators is disposed between each adjacent pair of the coils to prevent contact between adjacent coils having a different electrical phase. The coil separators are slideably inserted between the adjacent pairs of coils, with the annular ring positioning and supporting the coil separators.
摘要:
A stator assembly includes a stator stack and a plurality of lead conductors extending from the stator stack. A plurality of conductor terminals are each connected to a respective one of the plurality of lead conductors. A plurality of wires are each connected to a respective one of the plurality of conductor terminals and a plurality of phase lead connection terminals are each connected to at least one of the plurality of wires.
摘要:
An insulator assembly for a stator assembly of an electric machine includes an annular ring attached to a stator core, and a plurality of coil separators supported by the annular ring and extending from the annular ring axially along a longitudinal axis. One of the coil separators is disposed between each adjacent pair of the coils to prevent contact between adjacent coils having a different electrical phase. The coil separators are slideably inserted between the adjacent pairs of coils, with the annular ring positioning and supporting the coil separators.
摘要:
A stator assembly includes a stator stack and a plurality of lead conductors extending from the stator stack. A plurality of conductor terminals are each connected to a respective one of the plurality of lead conductors. A plurality of wires are each connected to a respective one of the plurality of conductor terminals and a plurality of phase lead connection terminals are each connected to at least one of the plurality of wires.
摘要:
A dual concentric AC motor allows for two independently operating AC motors that produce the same torque at the same current input as two conventional, separate electric motors while occupying a smaller physical volume. The dual concentric AC motor utilizes a single, hollow cylindrical stator core comprising inner and outer stators and an inner rotor and an outer rotor that operate independently of one another. The inner stator, with windings that face toward the center of the motor, couples to the inner rotor, which rotates inside the single stator core, while the outer stator, with windings that face away from the center of the motor, couples to the outer rotor, which rotates around the single stator core. A back iron, centrally located in the single stator core, physically and magnetically separates the inner and outer stators. The two rotors are coupled to separate, independent output shafts.
摘要:
A stator assembly comprises a stator defining S slots. First and second windings are arranged in each of the S slots. The two windings have a width in a radial direction and a thickness in a direction perpendicular to the radial direction. A ratio of the width to the thickness is between 3.0:1 and 4.5:1.
摘要:
A stir-welded rotor includes a stack of laminations, where each of the laminations defines a plurality of spaced-apart slots arrayed on an outer circumference. A conductor bar may be registered with each of the spaced-apart slots of the stack of laminations, with each conductor bar including a first metal portion and a second metal portion having substantially dissimilar compositions.