| Abstract |
Using 50 to 75 mm GTO allows a reduction of the number of power components and of total losses in traction equipment. However, the GTO itself is uneasy to cool due to surface reduction of his cathode and mechanical difficulties for its correct pressing. Also, having concentrated losses in one component, arises problems to spread them over the surface of big fins. A special device, adapted to these requirements, is presented. It allows to fix an isolated GTO, without liquids, into one single faced fin. The tests have been performed up to 1500 W losses for a 50 mm component. |
