Abstract: A rotor is a rotor rotatable about a central axis, and includes a rotor core and a plurality of flux barrier groups provided in the rotor core and arranged at intervals in a circumferential direction. Each of a plurality of the flux barrier groups includes a plurality of flux barriers arranged side by side at intervals in a radial direction, the rotor core has a projecting portion projecting from an edge portion of the flux barrier toward the inside of the flux barrier, and in each of a plurality of the flux barrier groups, an edge portion of at least one of the flux barriers is provided with two or more of the projecting portions.

Abstract: A synchronous reluctance motor includes magnetic barriers in each magnetic barrier group of a rotor core, each having a shape which protrudes toward a radial inner side and is symmetrical about a q-axis. A portion closer to a circumferential side than the q-axis includes a first portion extending perpendicular to the q-axis and a second portion extending farther toward the circumferential side from a circumferential side of the first portion and radially outward, and the first portions of the magnetic barriers in each magnetic barrier group have the same radial dimension. The first portions of the magnetic barriers other than the radial outermost magnetic barrier have the same circumferential dimension, which is the same as or twice a circumferential dimension of the first portion of the radial outermost magnetic barrier.

Abstract: One aspect of a rotor of the present disclosure is a rotor that includes a rotor core extending along the axial direction and a plurality of auxiliary magnets disposed in the rotor core. The rotor core includes a slit group including a plurality of first slits aligned in a radial direction, and a second slit disposed radially inside the slit group when viewed from the axial direction. The first slit extends along the circumferential direction in a shape protruding radially inward when viewed from the axial direction. The second slit includes a magnet housing portion extending along the radial direction, and a pair of outer flux barrier portions. The auxiliary magnet is disposed in the magnet housing portion with the circumferential direction as the magnetization direction.

Abstract: A rotor includes a rotor core that is made of electromagnetic steel sheets rotating around a central axis and laminated in an axial direction, and that has multiple flux barriers penetrating the electromagnetic steel sheets along the axial direction. At least some of the multiple flux barriers are provided with a first penetrating portion and a second penetrating portion arranged in the radial direction, the first penetrating portion housing a magnet and the second penetrating portion housing a conductive non-magnetic conductor.

Abstract: A synchronous reluctance motor includes a rotor having a rotor iron core and a stator having pole teeth. The rotor iron core defines multiple magnetic poles. A magnetic barrier area is defined between adjacent magnetic poles in a circumferential direction, and a conductor area is located at a radially outer side of the magnetic barrier area. The magnetic barrier area is provided with a hole arranged in multiple layers in a radial direction and defining a magnetic barrier. The conductor area is provided with multiple conductors arranged at substantially equal intervals in the circumferential direction and having substantially identical cross-sectional shapes as each other. The following relationship is satisfied: Nc={2×[Nt/(2×Np)?1]?1}×Np where Nt is a number of the pole teeth, Np is a number of the magnetic poles, and Nc is a number of the conductors.

Abstract: A variable frequency drive motor system and method with a single variable frequency drive controller controlling multiple synchronous reluctance motors in an open-loop mode using volts-per-Hertz control. Each motor includes a rotor including three or more curved, spaced-apart barrier slots extending longitudinally through each quadrant of the rotor. The rotor also includes a conductive cage including a plurality of conductive rotor bars contained within the barrier slots and also extending longitudinally through each quadrant, and conductive end rings located at opposite ends of the rotor and electrically connected to the respective ends of the rotor bars. The controller controls speed and torque by varying input frequency and voltage in an open-loop mode by adjusting the voltage magnitude of an inverter's output to each motor to match a required load torque in a volts-per-Hertz relationship. An operator interface allows for starting, stopping, adjusting, and otherwise controlling the operation of each motor.

Abstract: A rotor includes a stack of electromagnetic steel plates each including through-hole groups with through-holes extending through the respective electromagnetic steel plates. In each of the through-hole groups, at least one of the through-holes accommodates a magnet and at least a portion of the through-holes that does not accommodate any magnet is filled with an electrically conductive material. When the rotor is seen axially, at two circumferential sides of a magnetic flux passage that is adjacent to the magnet, a width of the magnetic flux passage adjacent a first side of the magnet is larger than a width of the magnetic flux passage near a second side of the magnet.

Abstract: A hybrid permanent magnet motor rotor rotates around a central axis, and includes: a rotor core provided with a plurality of magnet installation slots; and a plurality of magnet parts embedded inside a plurality of magnet installation slots respectively, wherein the rotor is provided with a plurality of first magnetic pole parts and a plurality of second magnetic pole parts, the magnetic poles of the first magnetic pole part and the second magnetic pole part are arranged in opposite and alternately in the circumferential direction, and the magnetic placement of the first magnetic pole part is different from that of the second magnetic pole part, the amount of magnets used in the second magnetic pole part is greater than that used in the first magnetic pole part.

Abstract: An embodiment of the present invention provides a rotor and a motor having the rotor. By providing a plurality of flux barrier groups and slot groups at intervals in a circumferential direction of the rotor iron core, it is possible to flexibly arrange the numbers of the flux barrier groups and the slot groups so as to meet the requirements for the number of poles of different products. In addition, by flexibly adjusting the quantity ratio between the flux barrier groups and the slot groups and/or the quantity relationship between the flux barriers in the flux barrier group and the slots in the slot group, it is possible to meet the requirements for motor efficiency and starting capacity of different products. Further, since the processing jig of the rotor only requires processing of the structures of the flux barriers and the slots, the manufacturing cost can be reduced.

Abstract: A synchronous reluctance motor includes a rotor and a stator surrounding the rotor. The rotator includes a rotatable shaft and magnetic flux barrier layers arranged radially. One of the magnetic flux barrier layers closest to the stator is filled with a conductor, and one of the magnetic flux barrier layers closest to the rotating shaft is a void.

Abstract: A motor includes a rotor and a stator, the rotor includes flux barriers. In a plane orthogonal to an axial direction, at least two flux barriers corresponding to each pole of the rotor are located entirely within an extending angle. A magnitude of the extending angle is determined by a number of poles of the rotor and phases of the motor. A center line of the extending angle is a q-axis of the rotor. A ratio between an area of the flux barrier entirely located within the extending angle and an area of all flux barriers corresponding to the pole is about ½ or more, and a ratio between an area of a radially innermost flux barrier entirely located within the extending angle and an area of a radially outermost flux barrier entirely located within the extending angle and a smaller one of the two areas is about 10% or less.

Abstract: A method for starting a motor having a stator and a rotor is provided. The method includes starting a motor with field coils of the stator being in Y connection, switching the connection of the field coils to ? connection when the speed of the rotor does not fall within a predetermined range from a rated speed within a predetermined time (t2), and switching the connection of the field coils to the Y connection when the speed of the rotor falls within the predetermined range from the rated speed.

Abstract: The present invention aims to improve conductivity of a conductive member on a first axial side, the conductive member being inserted into a flux barrier. An aspect of a synchronous reluctance motor includes flux barriers provided at respective poles of a rotor core, and conductive members that are branched from a first axial side, which is one side in an axial direction, and that are positioned in the flux barriers different from one another.

Abstract: A motor includes a rotor including a rotating shaft extending along a center axis, a cylindrical rotor core provided outside the rotating shaft in a radial direction, and two discoid weight plates provided at two ends of the cylindrical rotor core in an axial direction, and a stator opposing the rotor in the radial direction. A radius of each weight plate is smaller than a radius of the rotor core, and a difference between the radius of the rotor core and the radius of each weight plate is larger than an air gap between an outside of the rotor core in the radial direction and an inside of the stator in the radial direction.

Abstract: A rotor includes a stack of electromagnetic steel plates each including through-hole groups with through-holes extending through the respective electromagnetic steel plates. In each of the through-hole groups, at least one of the through-holes accommodates a magnet and at least a portion of the through-holes that does not accommodate any magnet is filled with an electrically conductive material. When the rotor is seen axially, at two circumferential sides of a magnetic flux passage that is adjacent to the magnet, a width of the magnetic flux passage adjacent a first side of the magnet is larger than a width of the magnetic flux passage near a second side of the magnet.

Abstract: Embodiments of the disclosure provide a rotor, a motor, and a driving apparatus. The rotor is defined by laminated electromagnetic steel plates. The electromagnetic steel plate includes a plurality of through hole groups running through the electromagnetic steel plate, and each through hole group includes a plurality of through holes. A central axis of a magnetic pole of the rotor is used as a d axis, and an axis that is 45 degrees from the d axis is used as a q axis, where an outer peripheral surface of the rotor that is between the d axis and the q axis is recessed radially inward relative to an outer peripheral surface of another portion of the rotor, so that the rotor is noncircular when observed in an axial direction.

Abstract: A synchronous reluctance motor includes a rotor and a stator surrounding the rotor. The rotator includes a rotatable shaft and magnetic flux barrier layers arranged radially. One of the magnetic flux barrier layers closest to the stator is filled with a conductor, and one of the magnetic flux barrier layers closest to the rotating shaft is a void.

Abstract: A rotor includes a rotor core that is made of electromagnetic steel sheets rotating around a central axis and laminated in an axial direction, and that has multiple flux barriers penetrating the electromagnetic steel sheets along the axial direction. At least some of the multiple flux barriers are provided with a first penetrating portion and a second penetrating portion arranged in the radial direction, the first penetrating portion housing a magnet and the second penetrating portion housing a conductive non-magnetic conductor.

Abstract: An embodiment of the present invention provides a rotor and a motor having the rotor. By providing a plurality of flux barrier groups and slot groups at intervals in a circumferential direction of the rotor iron core, it is possible to flexibly arrange the numbers of the flux barrier groups and the slot groups so as to meet the requirements for the number of poles of different products. In addition, by flexibly adjusting the quantity ratio between the flux barrier groups and the slot groups and/or the quantity relationship between the flux barriers in the flux barrier group and the slots in the slot group, it is possible to meet the requirements for motor efficiency and starting capacity of different products. Further, since the processing jig of the rotor only requires processing of the structures of the flux barriers and the slots, the manufacturing cost can be reduced.

Abstract: A rotor is located around an outer periphery of a rotation shaft of a motor and rotates together with the rotation shaft. The rotor includes magnetic steel plates laminated in an axial direction and including a through-hole group passing therethrough in the axial direction. The through-hole group includes through-holes each including, as a central line, an imaginary line extending in the radial direction and having an arcuate shape extending from the central line to both sides and radially outward. The through-holes are arranged in the radial direction. Among the through-holes, a radius of curvature of an arcuate radially inner side surface of the radially innermost through-hole is the smallest, and/or a radius of curvature of an arcuate radially outer side surface of the radially outermost through-hole is the largest.