LINEAR ASYNCHRONOUS ELECTRIC DRIVE Russian patent published in 2013 - IPC H02K41/25 

FIELD: electricity.

SUBSTANCE: linear asynchronous electric drive (LAED) 1 comprises an inductor (2) made of two conductors with a winding consisting of separate coils arranged at conductor teeth and an electroconductive anchor. There are two screening turns arranged on inductor teeth, outputs of which are connected to a reed relay, coils of which are connected to a switching device that provides for the possibility of simultaneous closing of at least eight screening turns arranged on four neighbouring teeth of both conductors and forming an initial row. Near the first two teeth on each conductor there are turns closed, which screen their right parts in direction from the left to the right. On the third and fourth teeth there are turns closed, which screen their left parts. To start the pitch of the electroconductive anchor, the switching device opens two turns that screen left parts of fourth teeth in both conductors. And to complete the pitch - it opens turns that screen the right parts of the first teeth in both conductors and closes turns that screen the right parts of the second and third teeth of both conductors, and turns that screen the left parts of the fourth and fifth teeth. On each tooth additionally there are short-circuit turns arranged at sides of conductor teeth adjacent to each other, which partially screen them and perpendicular to turns screening right and left parts of their every tooth.

EFFECT: increased efficiency factor due to reduction of electric losses.

7 dwg