BROACHING LOOP WINDINGS OF THREE-PHASE SUBMERSIBLE ELECTRIC MACHINES OF OPEN DESIGN

The article is devoted to the consideration of issues related to the design and circuits of broaching windings of three-phase asynchronous submersible electric machines in the marine environment on drilling rigs and platforms. The article describes the calculation of the winding pitch, the number of slots per pole and phase, as well as the angle of shift between the beginnings and ends of the phases. The mathematical apparatus for calculating and schematics of single-layer, double-layer and concentric windings of asynchronous electric motors is given. Some characteristic distinguishing features between single-layer, double-layer loop windings and windings with concentric coils of open-ended electric machines are also considered.