| 摘要 |
An electrical machine with compressed air cooling, the compressed air being circulated in a closed circuit. After having the compressed air heated by thermal losses of the electrical machine is cooled in the heat exchanger, it is led back into the machine. The compressed air is passed through the cooling channels between two layers of the armature winding heads, resulting in a steady thermal dissipation from the armature windings. Compared to the traditional machines the surface heat transmission factor -increasing due to the pressure-and steady cooling of the armature winding, enables the decrease of the mass of the machine per unit output. |
