Dynamic reconfiguration-switching of windings in an electric motor in an electric vehicle
First Claim
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1. A method for switching motor windings within an electric motor in an electric vehicle using a processor device, the method comprising:
- optimizing a dynamic reconfiguration-switching of a plurality of motor windings between a plurality of winding-configurations for trading off acceleration in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BEMF) from inhibiting further acceleration to a higher angular-velocity; and
using m simultaneous-linear equations, having m number of unknown variables, for determining a plurality of voltage constants, the optimal time, and the optimal angular-velocity for performing the dynamic reconfiguration-switching between each of the plurality of winding-configurations, wherein a number of the m simultaneous-linear equations increases, starting with one equation for a three-winding-configuration of the electric motor in the electric vehicle and adding an additional simultaneous equation for each additional one of the plurality of winding-configurations, and a number of the plurality of voltage constants equal to the correlating one of the plurality of winding-configurations.
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Abstract
Dynamic reconfiguration-switching of motor windings in an electric motor in an electric vehicle is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity.
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Citations
42 Claims
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1. A method for switching motor windings within an electric motor in an electric vehicle using a processor device, the method comprising:
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optimizing a dynamic reconfiguration-switching of a plurality of motor windings between a plurality of winding-configurations for trading off acceleration in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BEMF) from inhibiting further acceleration to a higher angular-velocity; and using m simultaneous-linear equations, having m number of unknown variables, for determining a plurality of voltage constants, the optimal time, and the optimal angular-velocity for performing the dynamic reconfiguration-switching between each of the plurality of winding-configurations, wherein a number of the m simultaneous-linear equations increases, starting with one equation for a three-winding-configuration of the electric motor in the electric vehicle and adding an additional simultaneous equation for each additional one of the plurality of winding-configurations, and a number of the plurality of voltage constants equal to the correlating one of the plurality of winding-configurations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An system for switching motor windings within an electric motor in an electric vehicle, the system comprising:
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the electric vehicle, the electric motor in the electric vehicle, having a plurality of motor windings, a plurality of switches for controlling a current through the plurality of motor windings of the electric motor in the electric vehicle, and a processor device in communication with the plurality of switches, wherein the processor device; optimizes a dynamic reconfiguration-switching of plurality of motor windings between a plurality of winding-configurations for trading off acceleration in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BEMF) from inhibiting further acceleration to a higher angular-velocity, and uses m simultaneous-linear equations, having m number of unknown variables, for determining a plurality of voltage constants, the optimal time, and the optimal angular-velocity for performing the dynamic reconfiguration-switching between each of the plurality of winding-configurations, wherein a number of the m simultaneous-linear equations increases, starting with one equation for a three-winding-configuration of the electric motor in the electric vehicle and adding an additional simultaneous equation for each additional one of the plurality of winding-configurations, and a number of the plurality of voltage constants equal to the correlating one of the plurality of winding-configurations. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A computer program product for switching motor windings within an electric motor in an electric vehicle using a processor device, the computer program product comprising a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:
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a first executable portion that optimizes a dynamic reconfiguration-switching of plurality of motor windings between a plurality of winding-configurations for trading off acceleration in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BEMF) from inhibiting further acceleration to a higher angular-velocity; and a second executable portion that uses m simultaneous-linear equations, having m number of unknown variables, for determining a plurality of voltage constants, the optimal time, and the optimal angular-velocity for performing the dynamic reconfiguration-switching between each of the plurality of winding-configurations, wherein a number of the m simultaneous-linear equations increases, starting with one equation for a three-winding-configuration of the electric motor in the electric vehicle and adding an additional simultaneous equation for each additional one of the plurality of winding-configurations, and a number of the plurality of voltage constants equal to the correlating one of the plurality of winding-configurations. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification