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US7365504: Motor having multiple independent armature winding sets

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Filing Information

Inventor(s) John C. Kroeger ·
Assignee(s) Honeywell International, Inc. ·
Attorney/Agent(s) Ingrassia Fisher & Lorenz ·
Primary Examiner Karen Masih ·
Application Number US11443587
Filing date 05/30/2006
Issue date 04/29/2008
Prior Publication Data
Predicted expiration date 06/01/2026
Patent term adjustment 2
U.S. Classifications 318/161  · 388/800  · 318/154  · 318/34  ·
International Classifications H02K702  ·
Kind CodeB2
20 Claims, 6 Drawings


Abstract

A motor is provided that includes multiple sets of independent stator windings that are not magnetically coupled, which allows the motor to be driven by multiple independent current drivers, and thereby increases the overall torque generated by the motor. In one embodiment, the motor is a brushless DC motor that includes a rotor and a stator. The rotor is configured for rotation, and the stator surrounds at least a portion of the rotor and has multiple sets of independent stator windings wound thereon. Each set of independent stator windings is configured to be independently energized and, when energized, magnetically independent of the other sets of independent stator windings.

Independent Claims | See all claims (20)

  1. 1. A brushless DC motor, comprising: a rotor configured for rotation; a stator surrounding at least a portion of the rotor and having multiple sets of independent multi-phase stator windings wound thereon, each set of independent multi-phase stator windings configured to be independently energized and wound such that, when energized, each set of independent multi-phase stator windings is magnetically independent of the other sets of independent multi-phase stator windings.
  2. 11. A brushless DC motor system, comprising: a rotor configured for rotation; a stator surrounding at least a portion of the rotor and having multiple sets of independent multi-phase stator windings wound thereon, each set of independent multi-phase stator windings configured to be independently energized and wound such that, when energized, each set of independent multi-phase stator windings is magnetically independent of the other sets of independent multi-phase stator windings; and a plurality of independent motor drivers, each motor driver coupled to one of the sets of independent stator windings and configured to selectively energize and commutate the set of independent stator windings to which it is coupled.
  3. 20. An attitude control system, comprising: a plurality of rotationally mounted flywheels, each flywheel adapted to receive a rotational drive force; a main control unit adapted to receive torque commands and operable, in response thereto, to selectively supply a plurality of independent speed commands; a plurality of motor control units, each motor control unit coupled to receive selected ones of the independent speed commands and, upon receipt thereof, to selectively supply a plurality of motor activation signals; and a plurality of motors, each motor coupled to one of the flywheels to supply the rotational drive force thereto, each motor including: a rotor, and a stator surrounding at least a portion of the rotor and having multiple sets of independent multi-phase stator windings wound thereon, each set of independent multi-phase stator windings coupled to receive, and be independently energized in response to, selected ones of the activation signals, each set of independent multi-phase stator windings wound on the stator such that, upon being energized, each set of independent multi-phase stator windings is magnetically independent of the other sets of independent multi-phase stator windings.

Referenced By

The current document is not referenced by other documents.

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