Control method and device of voltage converter and voltage control system
AssigneeJiangsu Contemporary Amperex Technology Limited
InventorsWeichen He, Jinfeng Gao, Zhimin Dan, Yizhen Hou
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Abstract
A control method and device of a voltage converter and a voltage control system are provided. In some embodiments, the control device includes a first control module configured to obtain a current reference value according to an output voltage of a voltage converter and a given voltage value; a current modulation module configured to reduce the current reference value when an output current of a voltage converter is greater than a first current threshold; and a second control module configured to control the output current of a voltage converter according to the reduced current reference value and an output current.
Claims18
A control device for a voltage converter, comprising:
- a first control module configured to obtain a current reference value according to an output voltage of the voltage converter and a given voltage value;
- a current modulation module configured to reduce the current reference value when an absolute value of an output current of the voltage converter is greater than an absolute value of a first current threshold;
- and
- a second control module configured to control the output current of the voltage converter according to the reduced current reference value and the output current and, wherein the current modulation module comprises:
- a first comparator unit configured to obtain the output current and the first current threshold, and to output a first signal when the absolute value of the output current is greater than the absolute value of the first current threshold;
- a current modulation unit configured to reduce the current reference value in response to the first signal.
A control method for a voltage converter, comprising:
- obtaining a current reference value according to an output voltage of the voltage converter and a given voltage value;
- reducing the current reference value when an absolute value of an output current of the voltage converter is greater than an absolute value of a first current threshold;
- controlling the output current of the voltage converter according to the reduced current reference value and the output current and, wherein reducing the current reference value when an absolute value of an output current of the voltage converter is greater than an absolute value of the first current threshold further comprises:
- obtaining the output current and the first current threshold, and outputting a first signal when the absolute value of the output current is greater than the absolute value of the first current threshold;
- determining a current down-regulation value in response to the first signal;
- reducing the current down-regulation value by the current reference value to obtain the reduced current reference value.
Dependencies are inferred from the claim text.