An electrical pump or generator apparatus (10) comprises a sealed housing (11) having fluid inlet and outlet ports (17, 15) and an impeller (12) rotatably mounted inside a cavity of the housing (11), the impeller (12) being mounted on a shaft for rotation about an axis, the shaft being confined inside the sealed hou...

An electrical machine comprises a stator (11) having a plurality of windings (25) and a rotor (19) having a plurality of permanent magnets (26) arranged to rotate around the windings (25), the magnets (25) being mounted to an outer portion (23) of a rotor body (20), the rotor body (20) further having an inner hub po...