Interior permanent magnet synchronous machine

A rotor for an interior permanent magnet synchronous machine, comprising:

• a plurality of rotor segments that are axially stacked along a rotor axis, the plurality of rotor segments, having:
• a first rotor segment being arranged to receive a first magnet set having first magnets that are disposed within a first magnet pocket, the first magnets, arranged in a V-shape, are disposed at a first pole-arc angle relative to each other and have a first magnet length that extends perpendicular to the rotor axis, and
• a second rotor segment that is axially stacked relative to the first rotor segment along the rotor axis, the second rotor segment being arranged to receive a second magnet set having second magnets that are disposed within a second magnet pocket, the second magnets, arranged in a V-shape, are disposed at a second pole-arc angle relative to each other and have a second magnet length that extends perpendicular to the rotor axis and is different than the first magnet length, the second pole-arc angle is different than the first pole-arc angle and the second magnet set is not skewed relative to the first magnet set,
• each first magnet of the first magnet set being coaxial with each second magnet of the second magnet set, the each second magnet oriented at an oblique angle relative to the each first magnet.