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US 2014/0191602 A1Published application
Electric Motor Systems and Methods
AssigneeHenry Research and Development, LLC
InventorsTrevor Hardway, Michael Salerno, Ronald David Wallin
Life of this patent
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Abstract
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.
Claims20
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.
3 more elements
An electric motor comprising:
- a stator providing a plurality of slots, wherein an OD to ID ratio is 1.42 or less, the OD to ID ratio is a ratio of an outside diameter of the stator relative to an inside diameter of the stator;
- 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;
- and
- a lubrication chamber for the electric motor, wherein the lubrication chamber is sealed.
2 more elements
An electric motor comprising:
- a stator providing a plurality of slots;
- 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 for the electric motor, wherein the lubrication chamber is sealed;
- and
- wherein a length of the electric motor is 7 feet or less, and the electric motor is capable of providing 50 ft-lb of torque or greater.
3 more elements
Dependencies are inferred from the claim text.