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US 12,009,741 B2Granted
Power supply apparatus and control method of power supply apparatus
AssigneeNissin Electric Co., Ltd.
InventorHironori Kashihara
Life of this patent
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Abstract
A power supply apparatus (1) is provided with an energy storage device (10), a converter (20) for converting DC output to AC output, and a control unit (60). The control unit (60) controls the converter (20) such that, when an output current value exceeds a first limit value, the output current value becomes a predetermined value larger than the first limit value by lowering an output voltage value to less than a normal state value.
Claims6
A power supply apparatus, comprising:
- an energy storage device,
- a converter for converting a DC output of the energy storage device into an AC output;
- a current measurer, measuring a current of the AC output;
- a voltage measurer, measuring a voltage of the AC output;
- and
- a control unit, controlling the converter,
- wherein the control unit is provided with a current upper limit setting unit, a target voltage setting unit, and an output instruction unit,
- the current upper limit setting unit operates, so as to:
- at a time when a value of the current exceeds a first limit value, change a current upper limit value from the first limit value to a second limit value greater than the first limit value, and
- at a time when the value of the current drops below the first limit value, change the current upper limit value from the second limit value to the first limit value,
- wherein the output instruction unit controls the converter, so that the voltage becomes a target voltage calculated by the target voltage setting unit, and
- wherein the target voltage setting unit, in a case where the value of the current exceeds the first limit value, lowers the target voltage to be less than a normal value, so that the value of the current becomes the current upper limit value.
9 more elements
A control method for a power supply apparatus, the power supply apparatus comprising:
- an energy storage device;
- and
- a converter for converting a DC output of the energy storage device into an AC output, and
- the control method comprising:
- measuring a current of the AC output;
- measuring a voltage of the AC output;
- changing a current upper limit value from a first limit value to a second limit value greater than the first limit value at a time when a value of the current exceeds the first limit value, and changing the current upper limit value from the second limit value to the first limit value at a time when the value of the current drops below the first limit value;
- controlling the converter in a manner that the voltage becomes a target voltage;
- and
- in a case where the value of the current exceeds the first limit value, lowering the target voltage to be less than a normal value, so that the value of the current becomes the current upper limit value.
7 more elements
Dependencies are inferred from the claim text.