Electric machine for wind power generator or pod drive in ship, has axial cooling channels arranged in rotor, forming closed cooling circuit

摘要

Only the rotor (5) is provided with axially extending cooling channels which form part of a closed cooling circuit. A rotor tube (6) is arranged on a shaft (8). Functional parts (12), such as a cooling medium delivery device (12) and/or rotor excitation devices are provided for operating the electric machine. The stator may have a cooling sleeve (3) at least partially surrounding it.