| 摘要 |
<p>The invention relates to a transformer with secondary rotary winding, meant for continuous control of the voltage in the electric drive or for performing some tests requiring a continuous and precise control of the voltage. According to the invention, the transformer consists of four elementary magnetic modules (M1, M2, M3, M4), each representing a plane mono-phased magnetic system with two columns (1, 1') and two front yokes (2, 2'), the modules (M1, M2, M3, M4) are joined by means of a composed central column whereon there is placed a secondary rotary winding, while the primary winding divided into four serially connected coils (3, 3', 3'', 3'') is distributed along the exterior columns of the component ferromagnetic modules; some steel sheets (5, 5', 5'', 5'') of the lower front yokes are involved in the secondary current circuit, by means of a rotary brush (PR) integral with the lower extremity of the rotary winding, and also by means of some collecting plates (6, 6', 6'', 6'') mounted on the opposite side of the yoke and in contact with the steel sheets (5, 5', 5'', 5'') of the yokes, and the four collecting plates (6, 6', 6'', 6'') are connected to one another and to one of the secondary circuit terminals, while the other is connected to a sliding brush (PG) of the rotary winding.</p> |
