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US 12,199,532 B2Granted
Methods of reducing vibrations for electric motors
AssigneeTula eTechnology, Inc.
InventorAnastasios Arvanitis
Life of this patent
Estimating the term…
Abstract
A method of controlling an electric motor includes pulsing the electric motor and phase shifting the modulation frequency. Pulsing the electric motor at the modulation frequency propels a vehicle to increase efficiency of the electric motor. Phase shifting the modulation frequency includes phase shifting between 0 degrees and 180 degrees to reduce vibrations induced in the vehicle.
Claims20
A drive system comprising:
- a driven component;
- an electric motor configured to rotate the driven component;
- and
- a controller configured to pulse the electric motor at a modulation frequency to reduce a duty cycle of the electric motor and to phase shift the modulation frequency to reduce vibrations induced in the driven component.
1 more element
A drive system comprising:
- a structure;
- a driven component;
- an electric motor fixed to the structure, the electric motor coupled to the driven component to rotate the driven component;
- and
- a controller configured to pulse the electric motor at a modulation frequency to reduce a duty cycle of the electric motor such that the electric motor delivers a target torque to the driven component, the controller configured to phase shift the modulation frequency to reduce vibrations in the structure.
2 more elements
A drive system comprising:
- a vehicle comprising:
- a driven component;
- and
- an electric motor fixed to the vehicle for rotating the driven component to propel the vehicle, the electric motor receiving pulsed energy at a modulation frequency such that the electric motor delivers a target torque to the driven component, the received pulsed energy of the electric motor being phase shifted from the modulation frequency such that vibrations in the vehicle are reduced.
1 more element
Dependencies are inferred from the claim text.