PERMANENT MAGNET MACHINE
First Claim
1. A rotor assembly for a permanent magnet machine configured to rotate about a longitudinal axis, the rotor assembly comprising:
- a rotor shaft; and
at least one rotor module configured to generate a magnetic field, whose magnetic field interacts with a stator magnetic field to produce a torque, the at least one rotor module disposed about the rotor shaft, the at least one rotor module comprising;
a plurality of permanent magnets; and
a sleeve component including a plurality of cavities formed therein, wherein at least one of the plurality of permanent magnets is disposed within one of the plurality of cavities formed in the sleeve component to retain the at least one permanent magnet therein and form an interior permanent magnet motor.
1 Assignment
0 Petitions
Accused Products
Abstract
A permanent magnet machine and a rotor assembly for the permanent magnet machine. The permanent magnet machine includes a stator assembly including a stator core configured to generate a magnetic field and extending along a longitudinal axis with an inner surface defining a cavity and a rotor assembly including a rotor core and a rotor shaft. The rotor core is disposed inside the stator cavity and configured to rotate about the longitudinal axis. The rotor assembly further including a plurality of permanent magnets for generating a magnetic field which interacts with the stator magnetic field to produce torque. The permanent magnets are disposed within one or more cavities formed in a sleeve component. The sleeve component configured to include a plurality of cavities or voids therein and thus provide minimal weight to the permanent magnet machine. The permanent magnet machine providing increased centrifugal load capacity, increased power density and improved electrical performance.
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Citations
20 Claims
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1. A rotor assembly for a permanent magnet machine configured to rotate about a longitudinal axis, the rotor assembly comprising:
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a rotor shaft; and at least one rotor module configured to generate a magnetic field, whose magnetic field interacts with a stator magnetic field to produce a torque, the at least one rotor module disposed about the rotor shaft, the at least one rotor module comprising; a plurality of permanent magnets; and a sleeve component including a plurality of cavities formed therein, wherein at least one of the plurality of permanent magnets is disposed within one of the plurality of cavities formed in the sleeve component to retain the at least one permanent magnet therein and form an interior permanent magnet motor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A rotor assembly for a permanent magnet machine configured to rotate about a longitudinal axis, the rotor assembly comprising:
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a rotor shaft; and a plurality of rotor modules configured to generate a magnetic field, whose magnetic field interacts with a stator magnetic field to produce a torque, the plurality of rotor modules disposed about the rotor shaft in an end-to-end axial alignment and cooperative engagement, each of the plurality of rotor modules defining a rotor core comprising; a plurality of permanent magnets; and a sleeve component including a plurality of cavities formed therein, wherein at least one of the plurality of permanent magnets is disposed within one of the plurality of cavities formed in the sleeve component to retain the at least one permanent magnet therein and form an interior permanent magnet motor. - View Dependent Claims (9, 10, 11, 12)
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13. A permanent magnet machine comprising:
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a stator assembly comprising a stator core and including stator windings to generate a stator magnetic field when excited with alternating currents, the stator assembly extending along a longitudinal axis with an inner surface defining a cavity; and a rotor assembly disposed inside said cavity and configured to rotate about the longitudinal axis, wherein the rotor assembly comprises at least one rotor module configured to generate a magnetic field, which magnetic field interacts with a stator magnetic field to produce a torque, the at least one rotor module comprising; a plurality of permanent magnets; and a sleeve component including a plurality of cavities formed therein, wherein at least one of the plurality of permanent magnets is disposed within one of the plurality of cavities formed in the sleeve component to retain the at least one permanent magnet and form an interior permanent magnet motor, wherein an air gap is defined between the rotor assembly and the stator assembly. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification