Magnetic geared rotating machine, power generation system, and drive system

A magnetic geared rotating machine, comprising:

• a stator;
• a rotor including a plurality of rotor magnets;
• and
• a magnetic pole piece rotor including a plurality of magnetic pole pieces each disposed at a radial position between the stator and the rotor,
• wherein each of the magnetic pole pieces has a magnetic pole piece end face facing one side in an axial direction,
• wherein each of the rotor magnets has a rotor magnet end face facing the one side,
• wherein at least either of two relationships is established, one relationship being a relationship where at least part of the magnetic pole piece end face is disposed at an axial position between the rotor magnet end face and an axial center of the magnetic geared rotating machine, the other relationship being a relationship where a finger end face, of each of a plurality of fingers, facing the one side is disposed at an axial position between a tooth end face, of a tooth of the stator, facing the one side and the axial center of the magnetic geared rotating machine, the plurality of fingers being configured to hold therebetween a stator magnet disposed on the tooth from both sides in a circumferential direction,
• wherein the stator includes a plurality of the stator magnets,
• wherein each of the stator magnets has a stator magnet end face facing the one side,
• wherein the stator magnet end face is disposed at an axial position between the rotor magnet end face and the axial center of the magnetic geared rotating machine, and
• wherein the stator magnet end face is disposed at the same axial position as the magnetic pole piece end face or at an axial position between the magnetic pole piece end face and the rotor magnetic end face.