Electric Motor Systems and Methods

摘要

Electric motor systems and methods may provide highly efficient operation. The electric motor systems and methods discussed herein provide an oil filled motor that is low speed and utilizes permanent magnets. The electric motor may utilize a large number of poles and fractional slot design. Further, in some embodiments, the electric motor systems and methods may be suitable for use downhole.

主权项

1. An electric motor for operation in a well, the electric motor comprising:
a stator providing a plurality of slots, wherein the stator is formed from laminated stack that are bonded; a plurality of windings for the plurality of slots of the stator; a rotor providing a plurality of permanent magnets arranged around the outer circumference of the rotor; a lubrication chamber containing a lubricant for the electric motor, wherein the lubrication chamber is sealed; and a pressure compensation piston for the electric motor positioned in a tubular chamber, wherein a first end of the pressure compensation piston is exposed to the lubricant and a second end is exposed to external fluids or gases, and the pressure compensation piston is movable within the tubular chamber to minimizes a pressure differential between the lubricant for the electric motor and external fluids or gases.