DIRECT-CURRENT POWER SUPPLY UTILIZING SYSTEM AND DIRECT-CURRENT MICROGRID NETWORK UTILIZING SAME
First Claim
1. A direct-current power supply utilizing system comprising:
- at least one direct-current power supply that produces a direct-current output;
an alternating-current commercial power supply;
a direct-current converter that converts the alternating-current commercial power supply into direct-current power supply; and
a direct-current load device that receives supply of direct-current power from both the at least one direct-current power supply and the commercial power supply which has been converted into direct-current power,wherein a back-flow prevention diode is individually connected between the at least one direct-current power supply and the direct-current load device and between the direct-current converter and the direct-current load device, and a power supply priority supply device that preferentially supplies power to the direct-current load device from a side of the direct-current power supply is connected.
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Accused Products
Abstract
A direct-current power supply utilizing system includes: at least one direct-current power supply that produces a direct-current output; an alternating-current commercial power supply; a direct-current converter that converts the alternating-current commercial power supply into direct-current power; and a direct-current load device that receives supply of direct-current power from both at least one direct-current power supply and the commercial power supply which has been converted into direct-current power, where a back-flow prevention diode is individually connected between the at least one direct-current power supply and the direct-current load device and between the direct-current converter and the direct-current load device, and a power supply priority supply device that preferentially supplies power to the direct-current load device from the side of the direct-current power supply is connected.
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Citations
18 Claims
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1. A direct-current power supply utilizing system comprising:
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at least one direct-current power supply that produces a direct-current output; an alternating-current commercial power supply; a direct-current converter that converts the alternating-current commercial power supply into direct-current power supply; and a direct-current load device that receives supply of direct-current power from both the at least one direct-current power supply and the commercial power supply which has been converted into direct-current power, wherein a back-flow prevention diode is individually connected between the at least one direct-current power supply and the direct-current load device and between the direct-current converter and the direct-current load device, and a power supply priority supply device that preferentially supplies power to the direct-current load device from a side of the direct-current power supply is connected. - View Dependent Claims (2, 7)
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3. A direct-current power supply utilizing system comprising:
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at least one direct-current power supply that produces a direct-current output; an alternating-current commercial power supply; a direct-current converter that converts the alternating-current commercial power supply into direct-current power; and a direct-current load device that receives supply of direct-current power from both the at least one direct-current power supply and the commercial power supply which has been converted into direct-current power, wherein a back-flow prevention diode is individually connected between the at least one direct-current power supply and the direct-current load device and between the direct-current converter and the direct-current load device, and a power supply priority supply device that preferentially supplies power to the direct-current load device from a side of the direct-current power supply is connected, and the at least one direct-current power supply that produces the direct-current output is a solar battery, and the solar battery includes a solar radiation amount detection member that detects a varying amount of solar radiation and a generated power amount control device that can utilize, from the detected value, as much as possible, power generated from the solar battery according to the varying amount of solar radiation. - View Dependent Claims (4, 5, 6, 15)
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8. A direct-current microgrid network comprising:
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a plurality of direct-current power generation devices that combine and feed out direct-current power and that generate direct-current power; an alternating-current commercial power supply that has been converted into direct-current power; a direct-current operating load device that receives supply of the combined direct-current power; and a direct-current bus that connects the direct-current power generation devices, the commercial power supply and the direct-current operating load device, wherein a priority use order table of power supply is provided in the direct-current power generation devices such that the direct-current power supply to the direct-current operating load device can be performed in ascending order of a power generation cost, and a power supply control device is included that detects a real-time power generation amount of the direct-current power generation devices corresponding to the real-time power generation cost in the direct-current power generation devices, that references the detection result and the priority use order table to determine a real-time optimum supply selection order of the direct-current power generation devices and that supplies power to the direct-current load device. - View Dependent Claims (9, 12, 13, 14)
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10. A direct-current microgrid network comprising:
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a plurality of direct-current power generation devices that generate direct-current power; a direct-current power supply device that outputs direct-current power; an alternating-current commercial power supply that has been converted into direct-current power; at least one direct-current operating load device that receives supply of direct-current power combined by the direct-current power generation devices, the direct-current power supply device and the commercial power supply which has been converted into direct-current power; and a direct-current bus that connects the direct-current power generation devices, the direct-current power supply device, the commercial power supply and the direct-current operating load device, wherein a priority use order table of power supply is provided in the direct-current power generation devices, the direct-current power supply device and the commercial power supply which has been converted into direct-current power such that the direct-current power supply to the direct-current operating load device can be performed in ascending order of a power generation cost, and a power supply control device is included that detects a real-time power supply allowable amount of the direct-current power generation devices, the direct-current power supply device and the commercial power supply which has been converted into direct-current power corresponding to the real-time power generation cost in the direct-current power generation devices, the direct-current power supply device and the commercial power supply which has been converted into direct-current power, that references the detection result and the priority use order table to determine a real-time optimum supply selection order of the direct-current power generation devices, the direct-current power supply device and the commercial power supply which has been converted into direct-current power and that supplies power to the direct-current load device. - View Dependent Claims (11, 16, 17, 18)
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Specification