A rotor for a rotary electric machine that rotates with respect to an axis of rotation, includes a body and permanent magnets. The body includes a plurality of rotor teeth defining cavities in which the permanent magnets are accommodated, each rotor tooth including at least one holding part. The holding part includes a holding portion having a holding face against which a radially outermost face of the permanent magnet bears, a wing remote from the radially outermost face and in the circumferential continuation of the holding portion.

The present invention provides a transport device and a specimen analysis system including the transport device that reduce the pulsation of thrust for moving an object to be transported, reduce vibration of the object to be transported during transport, and realize stable transport. The transport device of the present invention includes a first electromagnet unit including a first tooth made of a magnetic body, a first core connected to the first tooth and made of a magnetic body, and a first winding formed around the first core; a second electromagnet unit including a second tooth installed adjacent to the first electromagnet unit and made of a magnetic body, a second core connected to the second tooth and made of a magnetic body, a second winding formed around the second core; and a magnetic coupling unit made of a magnetic body between the first tooth of the first electromagnet unit and the second tooth of the second electromagnet unit.

An electric machine for a vehicle, comprising a stator, and a rotor comprising a plurality of poles, where each pole comprises a first V-shaped flux barrier and a second V-shaped flux barrier, where the first V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, where the second V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, and where the first and second V-shaped flux barriers are arranged adjacent each other and symmetrically to a d-axis of the rotor, where each of the poles further comprise a first V-shaped flux redirector arranged symmetrically to the d-axis and between the first V-shaped flux barrier and the second V-shaped flux barrier.

A switched reluctance motor is disclosed. The switched reluctance motor includes a rotor, a stator, an air gap between the stator and the rotor, and a plurality of conductive elements. The plurality of conductive elements are disposed on the rotor.

An electric motor includes a rotor and a stator core. The rotor has an outer circumferential wall around a rotational axis. The rotor includes a magnet and a groove. The magnet has a magnetic pole center. The groove is provided in the outer circumferential wall to be recessed toward the rotational axis to have a bottom point. An angle between a first virtual line connecting the bottom point of the groove and the rotational axis and a second virtual line connecting the magnetic pole center and the rotational axis viewed along the rotational axis is from 30% to 47% of an electric angle of 90 degrees. The stator core includes an inner circumferential wall. The stator core includes teeth projecting from the inner circumferential wall toward the stator axis. A cross-sectional shape of each teeth includes a first protrusion and a second protrusion.

[Problem]

An object of the present invention is to provide the motor which is possible to obtain the skew effect within the rotor gap surface by arranging the respective magnetic pole pitches at imbalance positions without causing the increasing of the magnet machining cost and the rotor assembly time, and the electric power steering apparatus equipped with the motor and a vehicle.

[Means for Solving the Problem]

The present invention is a motor that has a skew effect within a rotor gap surface of a mechanical angle one-cycle, wherein a rotor magnetic pole comprises plural magnetic salient pole portions by means of magnetic material, an N-pole and an S-pole magnets are alternately arranged on a rotor surface between the magnetic salient pole portions, and magnetic pole pitches of an electrical angle one-cycle, which comprise the magnetic salient pole portions and the N-pole and the S-pole magnets, are unevenly arranged.

[Problem]

An object of the present invention is to provide the motor which is possible to obtain the skew effect within the rotor gap surface by arranging the respective magnetic pole pitches at imbalance positions without causing the increasing of the magnet machining cost and the rotor assembly time, and the electric power steering apparatus equipped with the motor and a vehicle.

[Means for Solving the Problem]

The present invention is a motor that has a skew effect within a rotor gap surface of a mechanical angle one-cycle, wherein a rotor magnetic pole comprises plural magnetic salient pole portions by means of magnetic material, an N-pole and an S-pole magnets are alternately arranged on a rotor surface between the magnetic salient pole portions, and magnetic pole pitches of an electrical angle one-cycle, which comprise the magnetic salient pole portions and the N-pole and the S-pole magnets, are unevenly arranged.

An) electric machine with variable torque generation having a tunable Halbach array configuration. The electric machine includes a magnet assembly for generating a magnetic field. The magnet assembly includes a plurality of fixed magnets disposed in a ring arrangement so that fixed magnets having a north pole faced toward the rotor or stator are alternated with fixed magnets having a south pole faced toward the rotor or stator, a plurality of rotatable magnets disposed within a respective slot formed between two adjacent fixed magnets, a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is cancelled.

An) electric machine with variable torque generation having a tunable Halbach array configuration. The electric machine includes a magnet assembly for generating a magnetic field. The magnet assembly includes a plurality of fixed magnets disposed in a ring arrangement so that fixed magnets having a north pole faced toward the rotor or stator are alternated with fixed magnets having a south pole faced toward the rotor or stator, a plurality of rotatable magnets disposed within a respective slot formed between two adjacent fixed magnets, a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is cancelled.

A rotor structure includes a rotor body and a plurality of magnets. The rotor body has a plurality of surrounding magnet-setting areas, and each magnet setting area has a first magnet slot and a second magnet slot symmetrically arranged to a centripetal axis. A first outer end of the first magnet slot and a second outer end of the second magnet slot are close to the centripetal axis and rotor's outer edge. A first outer end of the first magnet slot and a second outer end of the second magnet slot are distant to the centripetal axis and rotor's outer edge. The outer edge has a plurality of notches intersected by the corresponding centripetal axes. The magnets are respectively fixed to the first magnet slots and the second magnet slots of the magnet-setting areas.