| Abstract |
Using 4500 V - 2500 A GTO allows to build traction devices for 1500 V. D.C. lines with one component for one arm. This advantage, cumulated with a simplified schema, decreasas the number of power components by a factor 4 to 6. As it is difficult to compare big GTO only from their data sheets, tests have been made in one same shopper with 2 japanese and 1 european GTO, 4500 V - 2500 A. Tests results are presented and the necessary modifications of the trigger device are discussed together with effects of decreasing the snubber capacity. |
