AC induction motor having multiple poles and increased stator/rotor gap
AssigneeRT Patent Company, Inc.
InventorJack H. Kerlin
Life of this patent
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Abstract
There is provided an electric motor having a flat form factor. The electric motor has a rotor with a shaft attached thereto. The rotor further includes a plurality of teeth disposed thereon. The motor further includes a stator having an axial length. A plurality of teeth are disposed on the stator such that a gap is defined between the teeth of the stator and the teeth of the rotor. The motor further includes a plurality of copper windings disposed around each of the teeth of stator. Each of the windings has a length of end copper equal to about twice the axial length of the stator. In this regard, the end of the wire is greater than the width of the stator such that the form factor of the motor can be flattened.
Claims22
An electric motor comprising:
- a rotor;
- a stator having an axial length;
- a plurality of teeth disposed on the stator;
- a gap disposed between the rotor and the stator;
- and
- a plurality of copper windings disposed around each of the stator teeth, each of the windings having a length of end copper equal to about twice the axial length of the stator in order to be able to increase a number of poles of the motor without decreasing efficiency.
An electric motor comprising:
- a rotor with a plurality of teeth;
- a stator with a plurality of teeth, the stator being sized and configured to surround the rotor;
- a plurality of copper windings disposed around each of the stator teeth;
- and
- a gap disposed between the teeth of the rotor and the teeth of the stator, the gap being sized and configured to increase magnetic reluctance thereby increasing magnetic energy storage in the electric motor which enables an increase in motor torque without incurring core saturation.
An electric motor comprising:
- a rotor having a plurality of rotor teeth and a shaft for producing torque;
- a stator having a plurality of stator teeth, the stator being configured to circumferentially surround the rotor;
- a gap defined between the rotor teeth and the stator teeth;
- and
- a wire coil disposed around a respective one of the stator teeth, the wire coil configured such that a length of the end copper for the coil is greater than a width of the stator.
Dependencies are inferred from the claim text.