| Abstract |
The majority of modern traction machines are equipped with choppers and direct current motors. Nevertheless, due to the important progress accomplished during the last few years in this field of physics and controlled semi-conductor technology, we can consider that asynchronous traction motor chains are liable to compete, for certain specific applications, with direct current motor and current chopper solutions. In order to guide our choice of the traction equipment to be installed in the new generations of rolling stock, the Alsthom-Atlantique-TCO group is presently experimenting with four asynchronous motor prototypes, thus covering the numerous types of railway equipment. The voltage inverter solution is, on one hand, applied to a high powered machine (The BB10003 locomotive) and on the other hand, to an MF 64 metro motorcoach. The current switch and copper solution is, for its part, being tested out on a suburban dual current motor coach (Z2N) and on an MF77 metro motorcoach. The general principals for each of these four experiments and the particularities of the retained solution are indicated herewith. |
