POWER SUPPLY DEVICE AND METHOD OF CONTROLLING POWER SUPPLY
First Claim
1. A power supply device, comprising:
- a converter which converts first AC power input from an external power system to DC power;
a storage device charged with the DC power from the converter;
an inverter which converts DC power from the storage device to second AC power;
an output AC power generating unit to which the first AC power and the second AC power are input, the unit which generates output AC power; and
a controller which obtains external power information indicating a relationship between a power supply and a power demand in the external power system through a network and outputs a control signal to control the output AC power generating unit according to the external power information, whereinthe controller controls the output AC power generating unit such that the first AC power accounts for most of the output AC power when there is a margin of the power supply, andthe controller controls the output AC power generating unit such that the first AC power and the second AC power are added up to obtain the output AC power when there is no margin of the power supply.
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Accused Products
Abstract
A converter which converts first AC power input from an external power system to DC power, a storage device charged with the DC power from the converter, an inverter which converts DC power from the storage device to second AC power, an output AC power generating unit to which the first AC power and the second AC power are input, the unit which generates output AC power, and a controller which obtains external power information indicating a relationship between a power supply and a power demand in the external power system through a network and outputs a control signal to control the output AC power generating unit according to the external power information are provided. The controller controls the output AC power generating unit according to a state of a margin of the power supply.
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Citations
7 Claims
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1. A power supply device, comprising:
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a converter which converts first AC power input from an external power system to DC power; a storage device charged with the DC power from the converter; an inverter which converts DC power from the storage device to second AC power; an output AC power generating unit to which the first AC power and the second AC power are input, the unit which generates output AC power; and a controller which obtains external power information indicating a relationship between a power supply and a power demand in the external power system through a network and outputs a control signal to control the output AC power generating unit according to the external power information, wherein the controller controls the output AC power generating unit such that the first AC power accounts for most of the output AC power when there is a margin of the power supply, and the controller controls the output AC power generating unit such that the first AC power and the second AC power are added up to obtain the output AC power when there is no margin of the power supply. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling a power supply, comprising:
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converting first AC power input from an external power system to DC power by a converter; charging a storage device with the DC power from the converter; converting DC power from the storage device to second AC power by an inverter; generating output AC power by an output AC power generating unit from the first AC power and the second AC power; and obtaining external power information indicating a relationship between a power supply and a power demand in the external power system through a network and generating a control signal to control the output AC power generating unit according to the external power information by a controller, wherein the controller controls the output AC power generating unit such that the first AC power accounts for most of the output AC power when there is a margin of the power supply, and the controller controls the output AC power generating unit such that the first AC power and the second AC power are added up to obtain the output AC power when there is no margin of the power supply.
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Specification