Abstract
In this paper, the results of experimental studies of longitudinal edge effect (LEE) compensation in induction machines with an open magnetic circuit (IMOMC) are presented. The LEE compensation is provided by using additional compensating elements (coils) of the inductor winding inserted into the grooves of the inductor core at the input and output ends in the direction of motion of a nonmagnetic conductive working body. The studies were carried out at an experimental facility with a working body in the form of a rotating disk mounted on the shaft of a direct current machine (DCM) connected with another DCM as a “generator–motor” system, which made it possible to carry out the studies using both stable and unstable branches of the IMOMC characteristics. The technique of processing experimental data with a correct account of mechanical loss of the experimental facility is presented. All possible options of connecting the compensating coils at the inductor input and output with the main phase windings of the inductor are investigated, including their operation both at the inductor input and output simultaneously and only at the inductor input or output. It is found that the greatest improvement of the IMOMC traction and energy characteristics is provided when the compensating elements are connected to the inductor input.
Published Version
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