Electric submersible pump

An electric submersible pump having an electric motor forming a unit with a pump impeller and where said motor has a rotor connected to the pump impeller, a stator comprising a plurality of pole teeth circumferentially positioned about the axis of said stator, and a plurality of coil groups where each said group has a plurality of individual coils of varying circumferential widths symmetrically positioned within each said coil group and wherein the coils of a coil group overlie pole teeth with the coils of greater circumferential width overlying a greater number of pole teeth than coils of smaller circumferential width:

• the improvement comprising in that all the coils of a single coil group are electrically connected at one of their ends to a common star point, in that the common star point of all said coil groups are electrically interconnected, and in that a lead is connected to the other end of each coil of a single coil group with said lead being connectable with a single phase of a multi-phase variable voltage source such that a single phase voltage is applied to all coils of a single coil group and where the leads connected to coils of greater circumferential width are subjected to a higher voltage than leads connected to coils of a smaller circumferential width to induce substantially the same amount of current flow through all of the coils of all of the coil groups to prevent short circuiting between adjacent coils.