WO2011039599A1 - 配電システム - Google Patents
配電システム Download PDFInfo
- Publication number
- WO2011039599A1 WO2011039599A1 PCT/IB2010/002423 IB2010002423W WO2011039599A1 WO 2011039599 A1 WO2011039599 A1 WO 2011039599A1 IB 2010002423 W IB2010002423 W IB 2010002423W WO 2011039599 A1 WO2011039599 A1 WO 2011039599A1
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- WO
- WIPO (PCT)
- Prior art keywords
- power
- converter
- distribution system
- output
- conditioner
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
- H02J3/44—Synchronising a generator for connection to a network or to another generator with means for ensuring correct phase sequence
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- the present invention relates to a power distribution system that distributes AC power and DC power to load equipment.
- Patent Document 1 discloses a power distribution system that distributes AC power and DC power in a building such as a house, a store, or an office building.
- the distribution system of Patent Document 1 has a distribution board and an AC power outlet, a DC output power terminal is provided in the AC power outlet, and a transformer and a rectifier are installed in the distribution board.
- these rectifiers After converting 100 volt or 200 volt AC voltage into three types of 6 volt, 3 volt, and 1.5 volt ac voltage, these rectifiers are rectified with a rectifier, and then 6 volt, 3 volt In addition to obtaining three types of DC voltages of 1.5 volts, these three types of DC voltages created in the distribution board are distributed to the DC output power supply terminals. '
- a DC power generation facility such as a solar power generator is installed in the building for private power generation, and the DC power output of the DC power generation facility is converted into AC power and supplied from the power company.
- a power distribution system that performs grid-connected operation with a commercial power source has been proposed (see, for example, Patent Document 2).
- This type of grid-connected system converts AC power generated by DC power generation equipment into AC power using a power converter (power conditioner) that converts DC power into AC power.
- This is a configuration that works with commercial power sources.
- power exceeding the power consumed by the load in the building is supplied from the DC power generation facility, it is possible to reverse the surplus power to the commercial power supply (so-called power sale). .
- Patent Document 1 Japanese Utility Model Publication No. 4 1 2 8 0 2 4
- Patent Document 2 Japanese Patent Laid-Open No. 2 0 0 3-2 8 4 2 4 5
- the applicant has proposed a configuration in which DC power is supplied from each DC—DC converter.
- a configuration that includes a power conditioner and a DC-DC converter, if both are operable at the same time, the DC-DC converter will not operate if the DC-DC converter is operated with a small amount of power generated by the DC power generation facility. There is a problem that it becomes stable and DC power cannot be supplied stably. In addition, if the operation of the DC-DC converter is unstable, it may interfere with the operation of the inverter.
- the present invention has been made in view of the above circumstances.
- a DC-DC converter that outputs direct current power can be stably operated, and stable direct current power can be supplied.
- the DC-DC converter converts the voltage level of the DC power output from the DC power source into a desired voltage level and outputs the voltage level.
- a power distribution system is provided that is controlled to operate only when the voltage is in the desired range.
- the DC power source is connected to the AC power system, the DC power output from the DC power source is converted into AC power synchronized with the phase of the AC power system, and the converted power is output.
- a power conditioner that reversely flows AC power to the AC power system; and an operation control unit that controls the DC-DC converter to operate only when the input voltage of the DC-DC converter is within a predetermined range.
- the power conditioner and the DC-DC converter are connected in parallel to the DC power source, and the conditioner and the DC-DC converter can operate simultaneously.
- the DC-DC converter that outputs DC power can be stably operated, and stable DC power can be supplied.
- the predetermined range is preferably the same as or narrower than an operating voltage range of the power conditioner.
- the DC-DC converter since the DC-DC converter is operated while the inverter is operating, it can be operated with the input voltage being stable and can be stably operated. Also, the DC-DC converter can be prevented from interfering with the operation of the power conditioner.
- the operation control unit may start the operation of the DC-DC converter after a predetermined time from when the input voltage of the DC-DC converter enters the operating voltage range.
- the DC-DC converter can be operated after waiting for the inverter to operate stably, and the operation of the DC-DC converter can be further stabilized.
- the operation control unit includes the DC-DC converter.
- the DC-DC converter can be started when the amount of change in input voltage per unit time is less than a predetermined value.
- the DC-DC converter can be operated after confirming the stable operation of the power conditioner, and the operation of the DC-DC converter can be further stabilized.
- the power distribution system may further include a power failure detection unit that detects a power failure in the AC power system, and the operation control unit operates in the predetermined range when a power failure is detected by the power failure detection unit.
- the DC-DC converter may be operated by expanding the voltage range even when there is no power failure.
- the operation of the power conditioner stops during a power failure. Therefore, regardless of the operation of the power conditioner, the DC-DC converter can be operated over a wider range, so that the direct current of solar cells, etc. It is possible to effectively use the power generated by the power source.
- the power distribution system further includes a power failure detection unit that detects a power failure of the AC power system, and the operation control unit operates the DC-DC converter when a power failure is detected by the power failure detection unit. Can also be stopped.
- the operation of the power conditioner stops in the event of a power failure, so the stable operation of the DC-DC converter may be difficult. Therefore, unstable operation can be suppressed by stopping the operation.
- the DC power source includes a solar cell
- the operation control unit can change the setting of the operating voltage range according to the number of installed solar cells.
- a DC-DC converter that converts a voltage level of DC power output from a DC power source into a desired voltage level and outputs the voltage level
- the DC-DC converter includes: The DC power source is connected in parallel with a power conditioner that converts the DC power output from the DC power source into AC power synchronized with the phase of the AC power system and outputs the AC power.
- a DC power distribution device that is capable of simultaneous operation and includes an operation control unit that controls the DC-DC converter to operate only when the input voltage of the DC-DC converter is within a predetermined range.
- FIG. 1 is a diagram showing a configuration of a power distribution system according to an embodiment of the present invention.
- FIG. 2 (a) and (b) are diagrams for explaining the operation of the power conditioner.
- FIG. 3 is a diagram showing a first configuration example of an operation control unit of a DC-DC converter in the present embodiment.
- FIG. 4 is a diagram showing a first example of an operation range of the DC-DC converter by the operation control unit of the first configuration example of the embodiment.
- FIG. 5 is a diagram showing a second example of the operation range of the DC-DC converter by the operation control unit of the first configuration example of the embodiment.
- FIG. 6 is a diagram showing a first example of an input voltage waveform related to operation control of a DC-DC converter.
- FIG. 7 is a diagram showing a second example of an input voltage waveform related to operation control of the DC-DC converter.
- FIG. 8 is a diagram showing a second configuration example of the operation control unit of the DC-DC converter in the present embodiment.
- FIG. 9 is a diagram showing an application example of the power distribution system of the present embodiment. BEST MODE FOR CARRYING OUT THE INVENTION
- the building to which the power distribution system according to the present invention can be applied is not limited to a detached house, but can also be applied to each dwelling unit or office of an apartment house.
- FIG. 1 is a diagram showing a configuration of a power distribution system according to an embodiment of the present invention.
- the power distribution system of this embodiment includes a solar cell 1, a relay terminal box (also referred to as a “connection box”) 2, a power conditioner 3, an AC distribution board 4, a DC—DC converter 5, and an AC—DC converter 6. It is comprised.
- the solar cell 1 is composed of a plurality (three in the illustrated example) of solar cell modules 1 A, 1 B, and 1 C, and is used as a DC power source.
- the relay terminal box 2 combines the output cables 7 for taking out the DC output from the solar cell modules 1 A to 1 C into one cable 8.
- These solar cell 1 and relay terminal box 2 constitute a solar power generation device as an example of a DC power generation facility.
- Power conditioner 3 converts the DC power output from solar cell 1 into AC power synchronized with the phase of the commercial power supply (AC power system) AC, and the converted AC power flows back to AC power system AC. To do.
- the AC distribution board 4 branches the AC power output from the AC power system AC or the power conditioner 3 and distributes it to the home via a plurality of branch breakers (not shown).
- the DC-DC converter 5 converts the voltage level of the DC power output from the solar battery 1 into a desired voltage level.
- the AC—DC converter 6 converts AC power supplied via the AC distribution board 4 into DC power of a desired voltage level.
- An AC load device 13 is connected to an AC distribution path 11 1 that distributes AC power output from the AC distribution board 4.
- a DC load device 14 is connected to the DC distribution path 12 that distributes the DC power output from the DC—DC converter 5 or the AC—DC converter 6.
- Solar cell modules 1 A to 1 C show multiple (8 in the example shown) solar cells For example, it is installed on the roof of a house.
- the relay terminal box 2 is a sealed box that relays multiple string output sides and load sides with terminals, and stores backflow prevention elements, DC switches, etc. as necessary (JISC 8 9 6 0 reference).
- the power conditioner 3 is a boosted chopper circuit (not shown) that boosts the DC output of the solar cell 1, and the DC output boosted by the booster chopper circuit is converted to an AC output of a sine wave synchronized with the AC power system AC phase. It has an inverter for conversion (not shown), an inverter control circuit (not shown) for adjusting the AC output by controlling the inverter, a grid interconnection protection device, and the like.
- the AC distribution board 4 is similar to a so-called residential distribution board (housing board).
- a main circuit breaker (not shown) whose primary side is connected to the AC power system AC in a box with a door, and a main circuit breaker
- a plurality of branch breakers and the like branched and connected to a conductive bar (not shown) connected to the secondary side are stored.
- the output line of the power conditioner 3 is drawn into the box of the AC distribution board 4, and the output line of the power conditioner 3 is connected in parallel to the AC power system AC in the box.
- an AC power distribution line 11 is connected to the secondary side of the branch breaker, and AC power is supplied to the AC load equipment 13 in the home via the AC power distribution path 11.
- An outlet (not shown) for connecting the AC load device 13 is provided at the end of the AC distribution path 11.
- the DC-DC converter 5 is configured by, for example, a switching regulator, etc., and detects the output voltage and performs control (feedback control) to increase or decrease the output voltage so that the detected output voltage matches the target voltage.
- control feedback control
- the voltage level of the DC power output from the solar cell 1 is converted to a desired voltage level.
- the AC-DC converter 6 is composed of, for example, a switching regulator, an inverter, and the like.
- the AC power output from the AC distribution board 4 is obtained by rectifying the AC voltage into a DC voltage and performing constant voltage control of the output voltage. To DC power at a desired voltage level.
- the output terminals of the DC-DC converter 5 and the AC-DC converter 6 are connected in parallel and connected to the DC distribution path 12.
- the DC distribution path 12 is provided with a protection circuit (not shown). Then, one of the DC power converted to a desired voltage level by the DC-DC converter 5 and AC-DC converter 6 is supplied to the DC load device 14 via the DC distribution path 12. Is done. It is also possible to configure a functional part that outputs DC power including components such as the DC-DC converter 5 and the AC-DC converter 6 as a DC power distribution device. An outlet (not shown) for connecting the DC load device 14 is provided at the end of the DC distribution path 12.
- the conditioner 3 and the DC-DC converter 5 are connected in parallel so that both can be operated simultaneously, when the DC-DC converter 5 is operated, the input voltage is within a predetermined range. Operate only in certain cases.
- FIGS. 2A and 2B are diagrams for explaining the operation of the power conditioner 3.
- the operating point of the solar cell 1 is always the highest against fluctuations in the output voltage and output current due to changes in the temperature of the solar cell 1 and changes in solar radiation intensity.
- the maximum output tracking control (hereinafter referred to as MP PT control (maximum power point tracking control)) is performed to follow the large output point and maximize the DC output of the solar cell 1.
- MP PT control is well known in the art and will not be described in detail.
- the grid connection protection device of power conditioner 3 stops the MP PT control by giving a command to the inverter control circuit when the voltage of the AC power system AC is monitored and rises above the appropriate value. By reducing the output of the inverter, the system voltage is prevented from rising.
- Curve A in Fig. 2 (a) shows the output characteristics of solar cell 1 under certain solar radiation conditions.
- the output power P 1 is the power (DC demand power) supplied from the DC—DC converter 5 to the DC load device 14 via the DC distribution path 12, and the operating point X 1 in the initial state of the inverter control circuit is It is determined by the DC demand power P 1.
- the inverter control circuit starts MP PT control, it reaches the operating point X 2 that matches the peak of the output characteristics (curve A) while adjusting the AC power supplied to the AC distribution path 1 1 and from the solar cell 1
- the maximum output (maximum power P 2) can be extracted.
- the difference between the maximum power P 2 and the DC demand power P 1 (P2 ⁇ P 1) is supplied to the AC load device 13 through the AC power distribution path 11.
- the supply power (P2-P1) of the power conditioner 3 is less than the power consumption of the AC load device 1/3
- the AC power supplied from the AC power system AC is the AC distribution line 1 1 To be supplied to the AC load device 13.
- the power supplied to power conditioner 3 (P 2 — P 1) exceeds the power consumption of AC load device 13
- the AC power supplied from power conditioner 3 (P 2 — P 1) The surplus is reversed to the AC power system AC.
- MP PT control is performed again to reach the operating point X 4 that matches the peak of the output characteristic (curve B) and extract the maximum output (maximum power P 3) from solar cell 1. it can. However, even when the DC demand power P 1 fluctuates, the maximum output can be extracted from the solar cell 1 by readjustment of the MP PT control in the same manner as when the amount of solar radiation is changed.
- the AC load device 1 3 is supplied with AC power from the AC power system AC via the AC distribution board 4 or AC power output from the power conditioner 3 as in the conventional case.
- the DC load device 14 the DC power of the solar cell 1, which has been converted to a constant voltage by the DC—DC converter 5, or the AC power supplied from the AC distribution board 4 is converted by the AC—DC converter 6. Distributes DC power. In this case, the DC power can be distributed more efficiently than when the AC power output from the inverter 3 is converted to DC power and distributed. can do.
- the power conditioner 3 and the DC-DC converter 5 are connected in parallel to the solar battery 1, the solar power to the DC load and AC load is affected by variations in the amount of solar radiation and the DC load (DC power demand).
- the output power distribution of battery 1 is automatically adjusted.
- DC power is preferentially supplied to the DC load device 14 via the DC-DC converter 5, and then AC power is preferentially supplied to the AC load device 13 by the power conditioner 3.
- AC power is supplied to the AC power system AC.
- the DC load or AC load fluctuates, the DC power output from the solar cell 1 is automatically distributed to the DC load device 14, the AC load device 1 3, and the AC power system AC.
- FIG. 3 is a diagram showing a first configuration example of the operation control unit of the DC-DC converter 5 in the present embodiment.
- an input voltage monitoring circuit 21 and an ONZOFF control circuit 22 are provided as operation control units of the DC-DC converter 5.
- the input voltage monitoring circuit 21 detects and monitors the input voltage from the solar cell 1 to the DC—DC comparator 5, that is, the output voltage of the DC power output by the power generation of the solar cell 1.
- the ONZO F F control circuit 22 outputs a control signal to the DC-DC comparator 5 based on the detection result of the input voltage monitoring circuit 21 to turn on / off the operation.
- the ONZO FF control circuit 22 turns on the operation of the DC-DC converter 5 when the input voltage of the DC-DC converter 5 is within a predetermined range, and turns off when the input voltage is out of the predetermined range. Control the operation.
- the input voltage monitoring circuit 21 and the ON / OF F control circuit 22 may be provided inside the DC-DC converter 5 or may be provided outside.
- FIG. 4 is a diagram showing a first example of the operating range of the DC-DC converter 5 by the operation control unit of the first configuration example of the present embodiment shown in FIG. FIG. 4 shows the relationship between the voltage and current of the output power of the solar cell 1 and the voltage range in which the DC-DC converter 5 operates.
- the output voltage and current change as the solar radiation intensity changes, and the higher the solar radiation intensity, the higher the voltage and current that are output.
- a predetermined range on the high voltage side where the maximum output power can be obtained from the solar cell 1 is set as the operating voltage range of the DC-DC converter 5, and the input voltage is set to this operating voltage range by the ONZOF F control circuit 22. Operate in some cases.
- FIG. 5 is a diagram showing a second example of the operating range of the DC-DC comparator 5 by the operation control unit of the first configuration example of the present embodiment shown in FIG.
- the operating voltage range of the DC-DC converter 5 is the same as or narrower than the operating voltage range of the power conditioner 3, and the ON / OFF control circuit 22 reduces the input voltage to this operating voltage range. Operate in some cases.
- the MP PT control above stabilizes the output voltage of the solar cell 1, that is, the input voltage of the DC-DC converter 5. Therefore, the DC-DC converter 5 can be operated stably.
- the operation of the DC-DC converter 5 can be controlled by the time and voltage fluctuation range as well as the above operating voltage range. These modifications are shown below.
- the ONZO FF control circuit 22 has a timer for measuring time, and starts operation after a predetermined time has elapsed after the input voltage of the DC-DC converter 5 enters a predetermined operating voltage range. .
- the DC-DC converter 5 can be operated after waiting for the conditioner 3 to operate.
- the operation is stopped immediately, and then the operation is stopped for a while after the input voltage is restored. Start operation after a predetermined time.
- the power conditioner 3 does not disturb the stable operation of the DC-DC converter 5.
- the ONZO FF control circuit 22 monitors the input voltage of the DC-DC converter 5 based on the detection output of the input voltage monitoring circuit 21 and determines the amount of change in input voltage per unit time (for example, input voltage fluctuation). The operation is started when the (width) becomes a predetermined value or less. As a result, it is possible to operate the DC-DC converter 5 after confirming the operation of the power conditioner 3.
- FIG. 6 is a diagram showing a first example of an input voltage waveform related to operation control of the DC-DC converter 5.
- the first example in Fig. 6 shows how the input voltage fluctuation range becomes smaller due to the operation of the power conditioner 3 from the state where the input voltage of the DC-DC converter 5 rises and the input voltage fluctuation range is large. In this case, when the input voltage is monitored and it is determined that the voltage fluctuation width per unit time is less than or equal to the predetermined value, the operation of the DC-DC converter 5 is turned on.
- FIG. 7 is a diagram showing a second example of the input voltage waveform related to the operation control of the DC-DC converter 5. The second example in Fig.
- the DC-DC converter 5 when the fluctuation range of the input voltage of the DC-DC converter 5 becomes equal to or less than the predetermined value, the DC-DC converter 5 is operated, so that the power conditioner 3 The DC-DC converter 5 can be operated after confirming the stable operation. As a result, the DC-DC converter 5 can be operated more stably.
- FIG. 8 is a diagram showing a second configuration example of the operation control unit of the DC-DC converter 5 in the present embodiment.
- an operation control unit of the DC-DC converter 5 an input voltage monitoring circuit 21, an ONZOFF control circuit 22, and a power failure detection circuit 23 having a function of a power failure detection unit are provided.
- the power failure detection circuit 23 is connected to an AC power supply path from the AC power system AC such as the AC distribution board 4 and the AC power distribution path 11 1 to detect a power failure of the AC power system AC.
- the ONZO FF control circuit 22 controls the operation of the DC-DC converter 5 so that the operation is turned on when the input voltage of the DC-DC converter 5 is within a predetermined range. .
- the ON / OF F control circuit 22 controls the operation of the DC-DC converter 5 at the time of a power failure based on the detection result of the power failure detection circuit 23. As an operation control of the DC-DC converter 5 at the time of a power failure, the ON OF F control circuit 22 performs either the following first control example or second control example.
- the operating voltage range of the DC-DC converter 5 is expanded more than during a non-power failure, and the DC-DC converter 5 is operated in a larger voltage range.
- the operation of the power conditioner 3 stops at the time of a power failure, the power generated by the solar cell 1 is effectively used by operating the DC-DC converter 5 in a wider range regardless of the operation of the power conditioner 3. be able to. In this case, at the time of power outage, the DC power from the solar cell 1 is distributed and the power can be used.
- the operation of the DC-DC converter 5 is stopped when a power failure is detected. Since the operation of the power conditioner 3 stops during a power failure, the stable operation of the DC—DC comparator 5 may be difficult. Therefore, the unstable operation can be suppressed by stopping the operation.
- the setting of the operating voltage range of the DC-DC converter 5 can be changed, and the operating voltage range depends on the number of installed solar cells 1 (peak voltage of power generation). It is also possible to switch between.
- the number of solar cells 1 installed (the number of solar cells in series) ) To switch.
- the DC-DC converter 5 can be operated in an appropriate operating voltage range according to the peak voltage of the power generation amount of the solar cell 1.
- FIG. 9 is a diagram showing an application example of the power distribution system of this embodiment.
- the power distribution system of this application example distributes the DC power to the AC load distribution panel 104 that distributes AC power to the AC load equipment via the AC distribution path 106 and the DC load equipment via the DC distribution path 107 And a DC distribution board 110 constituting the DC distribution device.
- AC distribution board 1 04 Commercial power source (AC power system) 1 0 5 and power conditioner 1 0 3 are connected to the power end, and AC distribution path 1 0 6 and DC distribution board 1 1 0 are connected to the output end It is connected.
- AC distribution board 1 0 4 branches AC power supplied from commercial power supply 1 0 5 or power conditioner 1 0 3 and outputs AC power to AC distribution path 1 0 6 and DC distribution board 1 1 0 To do.
- the DC distribution board 1 1 0 has a solar battery 1 0 1, a storage battery 1 0 2, and an AC distribution board 1 0 4 connected to the input terminal, and a DC distribution circuit 1 0 7 connected to the output terminal.
- DC distribution board 1 1 0 is composed of a solar cell converter 1 1 1, a storage battery converter 1 1 2, an AC-DC converter 1 1 3, a control unit 1 1 4, and a display unit 1 1 5. .
- the output line of the solar cell 1 0 1 is branched into two, and the power conditioner 1 0 3 and the solar cell converter 1 1 1 of the DC distribution board 1 1 0 are connected in parallel.
- the inverter 1 0 3 converts the DC power output from the solar cell 1 0 1 to AC power synchronized with the phase of the commercial power 1 0 5 and outputs the AC power, and the converted AC power 1 0 Reverse tide to 5.
- the solar cell converter 1 1 1 includes a DC-DC converter, and converts DC power output from the solar cell 1 0 1 to a desired voltage level and outputs the voltage.
- the storage battery comparator 1 1 2 is configured to include a DC-DC converter, and converts DC power output from the storage battery 1 0 2 to a desired voltage level for output.
- a C—D C converter 1 1 3 converts the AC power supplied from AC distribution board 1 0 4 into DC power of a desired voltage level and outputs the same.
- the control unit 1 14 is configured by an information processing apparatus having a microcomputer or the like, and controls operation of each unit of the DC distribution board 1 10.
- the control unit 1 1 4 performs the ON ZO FF control and output voltage control of the converters for the solar cell converter 1 1 1, the storage battery converter 1 1 2, and the AC-DC converter 1 1 3.
- Display 1 1 5 Control display.
- the display unit 1 1 5 is composed of a liquid crystal display device, etc., and displays various information such as the operating status of the DC distribution board 1 1 0 by letters, numbers, images, etc. based on instructions from the control unit 1 1 4 Display.
- the DC-DC converter can be stably operated by applying the configuration of the present embodiment described above to the DC-DC converter of the solar cell comparator 11 1 1. This makes it possible to supply stable DC power.
- a configuration including a solar power generation device configured to have a solar cell as a DC power source is shown.
- the configuration is not limited thereto, and the configuration includes a fuel cell.
- the above embodiments and modifications can be combined.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
- Control Of Electrical Variables (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/498,452 US9190847B2 (en) | 2009-09-30 | 2010-09-28 | Power distribution system distributing an alternating current (AC) power and a direct current (DC) power to load devices |
CN201080043443.9A CN102549902B (zh) | 2009-09-30 | 2010-09-28 | 配电系统 |
EP10819971.2A EP2485375B1 (en) | 2009-09-30 | 2010-09-28 | Power distribution system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-227423 | 2009-09-30 | ||
JP2009227423A JP5344759B2 (ja) | 2009-09-30 | 2009-09-30 | 配電システム |
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WO2011039599A1 true WO2011039599A1 (ja) | 2011-04-07 |
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PCT/IB2010/002423 WO2011039599A1 (ja) | 2009-09-30 | 2010-09-28 | 配電システム |
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US (1) | US9190847B2 (ja) |
EP (1) | EP2485375B1 (ja) |
JP (1) | JP5344759B2 (ja) |
CN (1) | CN102549902B (ja) |
WO (1) | WO2011039599A1 (ja) |
Families Citing this family (23)
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JP5507959B2 (ja) * | 2009-10-26 | 2014-05-28 | パナソニック株式会社 | 売電システム |
WO2012054406A1 (en) | 2010-10-18 | 2012-04-26 | Alpha Technologies, Inc. | Uninterruptible power supply systems and methods for communications systems |
JP5756903B2 (ja) * | 2011-05-30 | 2015-07-29 | パナソニックIpマネジメント株式会社 | 配電システム |
JP5805776B2 (ja) * | 2011-09-28 | 2015-11-10 | 京セラ株式会社 | パワーコンディショナシステム及び蓄電パワーコンディショナ |
US9037443B1 (en) * | 2011-10-16 | 2015-05-19 | Alpha Technologies Inc. | Systems and methods for solar power equipment |
DE102012002185B4 (de) * | 2012-02-07 | 2019-11-07 | Sew-Eurodrive Gmbh & Co Kg | Energiegewinnungssystem mit Energiespeicher, Verfahren zum Betreiben eines Energiegewinnungssystems |
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Also Published As
Publication number | Publication date |
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JP2011078215A (ja) | 2011-04-14 |
EP2485375B1 (en) | 2020-06-03 |
US20120188806A1 (en) | 2012-07-26 |
CN102549902A (zh) | 2012-07-04 |
JP5344759B2 (ja) | 2013-11-20 |
EP2485375A1 (en) | 2012-08-08 |
EP2485375A4 (en) | 2017-01-11 |
CN102549902B (zh) | 2016-03-16 |
US9190847B2 (en) | 2015-11-17 |
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