MOTOR CONTROL MECHANISM FOR ELECTRIC VEHICLES
First Claim
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1. An apparatus for controlling a wheel motor of a vehicle, comprising:
- a plurality of switches for controlling a direction of current through motor coils of the wheel motor; and
a brushless motor control circuit connected to each of the plurality of switches, wherein responsive to a request to adjust one of an angular velocity and an angular acceleration of the wheel motor, the plurality of switches are activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils.
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Abstract
An apparatus for controlling a wheel motor is provided. A plurality of switches is provided for controlling a direction of current through motor coils of the wheel motor. A brushless motor control circuit is connected to each of the plurality of switches. Responsive to a request to adjust one of an angular velocity and an angular acceleration of the wheel motor, the plurality of switches are activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils.
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Citations
20 Claims
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1. An apparatus for controlling a wheel motor of a vehicle, comprising:
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a plurality of switches for controlling a direction of current through motor coils of the wheel motor; and a brushless motor control circuit connected to each of the plurality of switches, wherein responsive to a request to adjust one of an angular velocity and an angular acceleration of the wheel motor, the plurality of switches are activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for controlling a vehicle wheel motor, comprising:
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one of a battery and a capacitor; a controller connected to the one of the battery and the capacitor; and a plurality of switches selectively activated by the controller for controlling a direction of current through motor coils of the wheel motor, wherein; during a first mode of operation, the plurality of switches are activated by the controller to place the motor coils in a serial configuration to maximize wheel motor torque, and during a second mode of operation, the plurality of switches are activated by the controller to place the motor coils in a parallel configuration to reduce a total back electromotive force (BEMF) from the motor coils and increase angular velocity. - View Dependent Claims (8, 9, 10)
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11. A method for controlling a wheel motor of a vehicle, comprising:
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receiving a request to adjust one of an angular velocity and an angular acceleration of the wheel motor; and activating a plurality of switches for controlling a direction of current through motor coils of the wheel motor, the plurality of switches activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of manufacturing a system for controlling a vehicle wheel motor, comprising:
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providing one of a battery and a capacitor; providing a controller connected to the one of the battery and the capacitor; and providing a plurality of switches adapted to be selectively activated by the controller for controlling a direction of current through motor coils of the wheel motor, wherein during a first mode of operation, the plurality of switches place the motor coils in a serial configuration to maximize wheel motor torque. - View Dependent Claims (18, 19, 20)
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Specification