Power supply apparatus, power supply system, and power supply method
AssigneeKYOCERA Corporation
InventorRyo Goto
Life of this patent
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Abstract
A power supply apparatus links to a grid, converts DC power from a distributed power source to AC power, and includes a controller that controls input voltage of the DC power in accordance with current flowing between the power supply apparatus and the grid. Based on communication with another power supply apparatus connected to the power supply apparatus, the controller also sets a standard value of controlling the input voltage.
Claims15
A power supply apparatus configured to link to a grid and convert DC power from a distributed power source to AC power, the power supply apparatus comprising:
- a controller configured to control input voltage of the DC power in accordance with current flowing between the power supply apparatus and the grid;
- wherein based on communication with another power supply apparatus connected to the power supply apparatus, the controller sets a threshold of controlling the input voltage as a threshold of forward flowing power or reverse flowing power.
A power supply system comprising:
- a plurality of distributed power sources;
- a plurality of power supply apparatuses respectively connected to the plurality of distributed power sources, and each configured to link to a grid and convert DC power from the distributed power source to AC power;
- and
- a current sensor configured to detect current flowing between the plurality of power supply apparatuses and the grid;
- wherein at least one power supply apparatus among the plurality of power supply apparatuses controls input voltage of the DC power in accordance with current detected by the current sensor, and based on communication with another power supply apparatus connected to the at least one power supply apparatus, sets a threshold of controlling the input voltage as a threshold of forward flowing power or reverse flowing power.
A power supply method in a power supply system,
- the power supply system comprising:
- a plurality of distributed power sources;
- and
- a plurality of power supply apparatuses respectively connected to the plurality of distributed power sources, and each configured to link to a grid and convert DC power from the distributed power source to AC power;
- the power supply method comprising steps performed by at least one power supply apparatus among the plurality of power supply apparatuses, the steps comprising:
- communicating with another power supply apparatus connected to the at least one power supply apparatus;
- detecting current flowing between the plurality of power supply apparatuses and the grid;
- controlling input voltage of the DC power in accordance with the current detected in the detecting step;
- and
- setting, based on communication in the communicating step, a threshold of controlling the input voltage as a threshold of forward flowing power or reverse flowing power.
Dependencies are inferred from the claim text.