Abstract: A rotor assembly for an electric machine has a rotor and magnets configured to form rotor poles that each have a central pole axis extending in a radial direction from a longitudinal axis. The rotor poles each have a first magnet layer having one or more first magnet including a central first magnet having a first transverse axis disposed perpendicular to the central pole axis. The rotor poles each have a second magnet layer radially inset from the first magnet layer and having two or more second magnets that include a pair of inclined second magnets each having a first transverse axis extending at an acute angle to the central pole axis. In relation to the central pole axis, a portion of each inclined second magnet is disposed inboard of an end of the central first magnet.

Abstract: An electrical machine comprises a stator and a rotor having a plurality of poles. Each pole comprises a radial axis centrally through the pole. Each pole comprises a first slot configuration having a magnet located centrally within the slot with the radial axis passing through the magnet or the magnet being substantially perpendicular to the radial axis. Each pole comprises a second slot configuration having a pair of magnets located at spaced apart positions within the slot. The pair of magnets are located each side of the radial axis. The first slot configuration is located between the second slot configuration and an outer perimeter of the rotor.

Abstract: An electrical machine comprises a stator and a rotor having a plurality of poles. Each pole comprises a radial axis centrally through the pole. Each pole comprises a first slot configuration having a magnet located centrally within the slot with the radial axis passing through the magnet or the magnet being substantially perpendicular to the radial axis. Each pole comprises a second slot configuration having a pair of magnets located at spaced apart positions within the slot. The pair of magnets are located each side of the radial axis. The first slot configuration is located between the second slot configuration and an outer perimeter of the rotor.

Abstract: An electrical machine (1) comprises a stator (20) and a rotor (10) having a plurality of poles (4). A pole comprises a radial axis (5) centrally through the pole. A pole comprises a first slot configuration (12, 13) having a magnet (15, 16) located centrally within the slot with the radial axis (5) passing through the magnet (15, 16) or the magnet being substantially perpendicular to the radial axis. A pole comprises a second slot configuration (11) having a pair of magnets (14-1, 14-2) located at spaced apart positions within the slot. The pair of magnets (14-1, 14-2) are located each side of the radial axis (5). The first slot configuration (12, 13) is located between the second slot configuration (11) and an outer perimeter (19) of the rotor (10).

Abstract: An electrical machine (1) comprises a stator (20) and a rotor (10) having a plurality of poles (4). A pole comprises a radial axis (5) centrally through the pole. A pole comprises a first slot configuration (12, 13) having a magnet (15, 16) located centrally within the slot with the radial axis (5) passing through the magnet (15, 16) or the magnet being substantially perpendicular to the radial axis. A pole comprises a second slot configuration (11) having a pair of magnets (14-1, 14-2) located at spaced apart positions within the slot. The pair of magnets (14-1, 14-2) are located each side of the radial axis (5). The first slot configuration (12, 13) is located between the second slot configuration (11) and an outer perimeter (19) of the rotor (10).