LINEAR ASYNCHRONOUS ELECTRIC DRIVE Russian patent published in 2013 - IPC H02K41/25 H02P25/06 

FIELD: electricity.

SUBSTANCE: linear asynchronous electric drive comprises an inductor 1, comprising a core, on teeth 2 of which there are winding coils 3, and an electroconductive anchor 4. In each upper part of teeth there are two screening turns 5, outputs of which are connected to contacts of sealed-contact relays 6, coils of which are connected with a switching device. The switching device provides for the possibility of simultaneous closure of at least four screening turns, placed on four adjacent teeth of the inductor, which form the initial row. In first two teeth the turns that screen their right parts are closed, and in the third and fourth teeth the turns are closed, which screen their left parts. To start a pitch of the electroconductive anchor, the switching device opens a turn that screens the left part of the fourth tooth, and to complete the pitch - it opens a turn that screens the right part of the first tooth, closes turns that screen the right parts of the second and third teeth, and a turn screening the left part of the fifth tooth. To fix the electroconductive anchor, after the pitch the switching device opens turns that screen the third and the fourth teeth, and disconnects winding coils arranged on these teeth from the source of voltage.

EFFECT: higher efficiency factor in the mode of anchor fixation after a pitch.

7 dwg