Abstract: An electrical device includes an electromagnetic component configured to generate a magnetic flux. The electromagnetic component includes a soft magnetically-conductive material configured to pass magnetic flux therethrough along a flux path. The soft magnetically-conductive material includes at least one grain oriented portion having metal grains that are oriented parallel with respect to the magnetic flux.

Abstract: An electrical machine is provided including a stator assembly having a stator core and a plurality of windings. A rotor assembly is arranged concentrically with the stator assembly and is configured to rotate about an axis. The rotor assembly includes a rotor core and a cage surrounding a periphery of the rotor core. The cage includes a plurality of impeller fins positioned adjacent at least one end of the rotor core.

Abstract: A linear propulsion machine and system (10) is disclosed that includes a stator (30) having a plurality of teeth (34) and a mover (32) moveable in a linear direction along the stator (30). The mover may include a plurality of spaced apart ferromagnetic strata (40), a plurality of slots (42), a plurality of wire coils (44), and a plurality of magnet layers (46). Each of the slots (42) may be adjacent to at least one of the strata (40). Each coil (44) may be disposed in a slot (42). Each magnet layer (46) may be sandwiched between strata (40) and disposed inside one of the plurality of coils (44). Each coil (44) is disposed perpendicularly to the direction of magnetic flux of the magnet layer (46) around which the coil (44) is wound. In an embodiment, the teeth (34) or the magnet layer (46) may be disposed at an angle.

Abstract: A screw compressor is provided including a casing having a suction port and a discharge port, a male rotor rotatable relative to the casing about a first axis, a female rotor rotatable relative to the casing about a second axis, and a magnetic gear system. The magnetic gear system includes a first magnetic gear associated with the male rotor and a second magnetic gear associated with the female rotor. The first magnetic gear and the second magnetic gear are positioned such that a magnetic field of the first magnetic gear interacts with the second magnetic gear to drive rotation of the female rotor about the second axis.

Abstract: A screw compressor is provided and includes a housing (11), helical screws (21, 24) disposed within the housing (11) for rotation about respective rotational axes (RA1, RA2) in a mutually engaged relationship, at least one stator (30, 40) disposed within the housing (11) about a corresponding one of the helical screws (21, 24) and a conductive element (50, 60). The conductive element (50, 60) is wound about the at least one stator (30, 40) such that current applied to the conductive element (50, 60) generates a flux field by which the corresponding one of the helical screws (21, 24) is driven to rotate about the corresponding rotational axis (RA1, RA2).

Abstract: A magnetic bearing (20) comprises: a rotor (22) to be supported for rotation about an axis (502); a stator (24) extending from a first end (30) to a second end (32) and comprising: one or more first permanent magnets (110); one or more second permanent magnets (112) of polarity substantially opposite to a polarity of the one or more first permanent magnets; a first axial winding (34); a second axial winding (36); a first end pole (120); and a second end pole (122).

Abstract: An electrical device includes an electromagnetic component configured to generate a magnetic flux. The electromagnetic component includes a soft magnetically-conductive material configured to pass magnetic flux therethrough along a flux path. The soft magnetically-conductive material includes at least one grain oriented portion having metal grains that are oriented parallel with respect to the magnetic flux.

Abstract: An electrical device includes an electromagnetic component configured to generate a magnetic flux. The electromagnetic component includes a soft magnetically-conductive material configured to pass magnetic flux therethrough along a flux path. The soft magnetically-conductive material includes at least one grain oriented portion having metal grains that are oriented parallel with respect to the magnetic flux.

Abstract: A screw compressor (12) includes a casing (20) having a suction port and a discharge port, a male rotor (28) rotatable relative to said casing about a first axis (A), a female rotor (30) rotatable relative to said casing about a second axis (B), and a magnetic gear system including a first magnetic gear (60) associated with said male rotor and a second magnetic gear (62) associated with said female rotor. The first magnetic gear and the second magnetic gear are positioned such that a magnetic field of said first magnetic gear interacts with said second magnetic gear to drive rotation of said female rotor about said second axis.

Abstract: An impeller of a centrifugal compressor comprising an impeller body (54) rotatable about an impeller axis Wand a motor operable to drive said impeller about said impeller axis. The motor includes a stator assembly (72) and a rotor assembly (76). The rotor assembly is associated with said impeller body.

Abstract: A linear propulsion machine and system (10) is disclosed that includes a stator (30) having a plurality of teeth (34) and a mover (32) moveable in a linear direction along the stator (30). The mover may include a plurality of spaced apart ferromagnetic strata (40), a plurality of slots (42), a plurality of wire coils (44), and a plurality of magnet layers (46). Each of the slots (42) may be adjacent to at least one of the strata (40). Each coil (44) may be disposed in a slot (42). Each magnet layer (46) may be sandwiched between strata (40) and disposed inside one of the plurality of coils (44). Each coil (44) is disposed perpendicularly to the direction of magnetic flux of the magnet layer (46) around which the coil (44) is wound. In an embodiment, the teeth (34) or the magnet layer (46) may be disposed at an angle.

Abstract: A linear propulsion machine and system (10) is disclosed that includes a stator (30) having a plurality of teeth (34) and a mover (32) moveable in a linear direction along the stator (30). The mover may include a plurality of spaced apart ferromagnetic strata (40), a plurality of slots (42), a plurality of wire coils (44), and a plurality of magnet layers (46). Each of the slots (42) may be adjacent to at least one of the strata (40). Each coil (44) may be disposed in a slot (42). Each magnet layer (46) may be sandwiched between strata (40) and disposed inside one of the plurality of coils (44). Each coil (44) is disposed perpendicularly to the direction of magnetic flux of the magnet layer (46) around which the coil (44) is wound. In an embodiment, the teeth (34) or the magnet layer (46) may be disposed at an angle.

Abstract: A magnetic bearing (20) comprises: a rotor (22) to be supported for rotation about an axis (502); a stator (24) extending from a first end (30) to a second end (32) and comprising: one or more first permanent magnets (110); one or more second permanent magnets (112) of polarity substantially opposite to a polarity of the one or more first permanent magnets; a first axial winding (34); a second axial winding (36); a first end pole (120); and a second end pole (122).

Abstract: The present disclosure relates generally to a propulsion system for an elevator having a first motor portion mounted to one of an object to be moved and a stationary structure and a second motor portion mounted to the other of the object to be moved and the stationary structure, the first motor portion having at least one coil.

Abstract: An electric machine including a rotor and an annularly-shaped first stator is provided. The rotor includes an annularly-shaped rotor body and permanent magnets positionally-fixed relative to the rotor body. The first stator includes circumferentially-spaced stator poles. The rotor and the first stator are concentric and axially-aligned relative to an axial centerline of the electric machine. Each of the permanent magnets creates a magnetic dipole. Each magnetic dipole extends along a dipole axis that passes through the respective permanent magnet. Each dipole axis extends in a first plane. The centerline of the electric machine extends in a second plane that is at least substantially perpendicular to the first plane. Each of the permanent magnets is positioned so that a magnet angle that is between 15° and 75° is defined between the respective dipole axis and a radial axis that extends between the respective permanent magnet and the centerline.

Abstract: The present disclosure relates generally to an elevator system having a hoistway, an elevator car to travel in the hoistway, a first motor portion mounted to one of the elevator car and the hoistway, the first motor portion having at least one coil, a second motor portion mounted to the other of the elevator car and the hoistway, the second motor portion having at least one permanent magnet, and a gap between the first motor portion and the second motor portion.

Abstract: A rotor of an electric machine includes a rotor core including a rotor central core and at least one intermediate core element. A plurality of permanent magnets are located between the rotor central core and the at least one intermediate core element. The plurality of permanent magnets are secured to the rotor central core via one or more first mechanical interface connections. The one or more first mechanical interface connections are defined by a mechanical retaining feature located at one of the rotor central core or the plurality of permanent magnets, and a complimentary mechanical interface channel receptive of the mechanical retaining feature to secure the plurality of permanent magnets at the rotor central core.

Abstract: A rotor of an electric machine includes a rotor core having a plurality of axially-stacked rotor laminations, and a plurality of permanent magnets. The plurality of permanent magnets are first permanent magnets secured at the core outer circumferential surface of the rotor core and are made of a first permanent magnet material with a first magnetic orientation. The plurality of permanent magnets are secured to the rotor core via a plurality of mechanical interface joints defined by at least one first mechanical interface feature having a permanent magnet channel with a magnet channel surface, located inside the permanent magnet and at least one second mechanical interface feature having a core channel with a core channel surface located inside of the rotor core. At least one complimentary mechanical interface member is inserted in the magnet channel and the core channel, having surfaces complimentary to the magnet channel and the core channel.

Abstract: The present disclosure relates generally to an elevator system having a hoistway, an elevator car to travel in the hoistway, a first motor portion mounted to one of the elevator car and the hoistway, the first motor portion having at least one coil, a second motor portion mounted to the other of the elevator car and the hoistway, the second motor portion having at least one permanent magnet, and a gap between the first motor portion and the second motor portion.

Abstract: The present disclosure relates generally to a propulsion system for an elevator having a first motor portion mounted to one of an object to be moved and a stationary structure and a second motor portion mounted to the other of the object to be moved and the stationary structure, the first motor portion having at least one coil.