An asynchronous traction system supplied from a single-phase main power supply unit integrally incorporating such a device

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an asynchronous traction system supplied from a single-phase main power supply apparatus, and more particularly to an asynchronous traction system supplied from a single-phase main power supply apparatus integrally incorporating a voltage descending apparatus and an apparatus of this kind, By providing a voltage drop device for use in an asynchronous traction system that is supplied from the single phase main power supply of the present invention, the over-rating and routing distance of the insulator are not disturbed and the thermal resistance of the semiconductor cooling system is not increased.;For this purpose the invention comprises at least one pair of forced current commutation rectifiers 1, 2 or 1, 6 connected to the secondary winding 3, 4 or 3, 5 of the primary traction transformer T , Wherein the power source passes through the main traction transformer (T) and exits from the DC main power supply and is supplied by a forced current single-phase rectifier (6) operating as a voltage increasing control rectifier, (5), and the other forced current single-phase rectifiers (1, 2) operate as synchronous voltage inverters.;Therefore, the voltage drop device of the present invention can be applied to a unique rail traction field and a synchronous traction system that are not exclusive.