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US 10,093,184 B2Granted
Direct current voltage clamping in a vehicle
AssigneeFord Global Technologies, LLC
InventorsShuitao Yang, Yan Zhou, Fan Xu, Lihua Chen
Life of this patent
Estimating the term…
Abstract
A vehicle system in a hybrid vehicle comprises a controller configured to generate for output a modulated voltage to a direct current capacitor to prevent voltage spikes on the capacitor in response to receiving a reference current via a direct current voltage clamping control block that outputs a reference current in response to a difference between a feedback voltage and a reference voltage exceeding a threshold.
Claims20
A vehicle system in a hybrid vehicle, comprising:
- a controller configured to receive a reference voltage defining a threshold voltage value and a feedback voltage defining a direct current (DC) voltage of a DC capacitor of a vehicle motor inverter, and to generate for output a reference current via at least a voltage limiter in response to a difference between the feedback and reference voltages exceeding a threshold to prevent voltage spikes on the DC capacitor.
A vehicle system in a hybrid vehicle, comprising:
- a controller configured to generate for output a modulated voltage to a direct current (DC) capacitor to prevent voltage spikes of the capacitor in response to receiving a reference current via a DC voltage clamping control block configured to output a reference current in response to a difference between a feedback voltage and a reference voltage exceeding a threshold.
A method in a hybrid vehicle, comprising:
- receiving a reference voltage defining a threshold voltage value, and a feedback voltage defining a direct current (DC) voltage of a DC capacitor of a vehicle motor inverter;
- and
- generating for output a reference current via at least a voltage limiter in response to a difference between the feedback and reference voltages exceeding a threshold to prevent voltage spikes on the DC capacitor.
Dependencies are inferred from the claim text.