Vehicle transient voltage control
AssigneeFord Global Technologies, LLC
InventorsTodd Ansbacher, Alan Francis Judge, Jeffrey Raymond Mohr, Frederick Shell, Michael J. Irby, Karen Price, Gabriel Jim, Christopher Semanson
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Abstract
A vehicle power system includes a controller that reduces a voltage setpoint of an alternator by a predetermined amount in response to a magnitude of electric charge provided by the alternator during a predetermined time period exceeding a first threshold and a rate of change of power output by the alternator exceeding a second threshold during the time period. The controller also regulates an output voltage of the alternator based on the setpoint.
Claims14
A vehicle power system comprising:
- an alternator;
- and
- a controller configured to, responsive to a magnitude of amp hour electric charge provided by the alternator for a predetermined time period exceeding a first threshold and a slope of power output by the alternator exceeding a second threshold during the time period, reduce a voltage setpoint of the alternator by a predetermined amount, and regulate an output voltage of the alternator based on the setpoint.
A method of regulating alternator output voltage comprising:
- receiving data regarding an amount of amp hour electric charge provided by an alternator to a load and a magnitude of power output by the alternator;
- in response to the amount exceeding a first threshold and the magnitude exceeding a second threshold, reducing an output voltage setpoint of the alternator by a predetermined amount;
- and
- regulating the output voltage of the alternator based on the setpoint.
A vehicle power system comprising:
- an alternator;
- and
- a controller configured to selectively alter by a predetermined amount an output voltage setpoint for the alternator in response to a magnitude of amp hour electric charge and a slope of power output by the alternator crossing respective thresholds during a predetermined time period.
Dependencies are inferred from the claim text.