KR102282617B1 - 태양광 에너지용 에너지 저장 시스템 및 태양광 에너지 저장 방법 - Google Patents
태양광 에너지용 에너지 저장 시스템 및 태양광 에너지 저장 방법 Download PDFInfo
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- H02J3/385—
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Electromagnetism (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
- Inverter Devices (AREA)
Abstract
Description
도 2 는 솔라 어레이(solar array)로부터 PV(photovoltaic) 인버터 동작 과정을 통한 솔라 어레이 DC 전압 및 전류를 예시하는 도면이다.
도 3은 인버터 클리핑 동안 잠재적으로 소실된 에너지의 포획을 예시하는 도면이다.
도 4는 본 발명의 한 실시 예에 따른 대표적인 DC/DC 변환기의 개략도이다.
도 5는 본 발명의 한 실시 예에 따른 DC/DC 변환기의 제어 구조를 보여주는 도면이다.
도 6은 본 발명의 한 실시 예에 따른 에너지 저장 시스템에 의해 구현되는 저 전압 에너지 포획 방법을 예시하는 흐름도이다.
도 7은 본 발명의 한 실시 예에 따른 에너지 저장 시스템에 의해 구현되는 인버터 클리핑 포획 방법을 예시하는 흐름도이다.
도 8은 본 발명의 한 실시 예에 따른 에너지 저장 시스템에 의해 구현되는 디스패치 가능 PV 전력을 제공하는 방법을 예시하는 흐름도이다.
도 9는 본 발명의 한 실시 예에 따른 에너지 저장 시스템에 의해 구현되는 램프율 제어 방법을 예시하는 흐름도이다
Claims (18)
- 전원으로부터 저 전압 에너지를 포획하기 위한 전력 시스템으로서,
상기 전력 시스템은,
DC 버스에 연결된 상기 전원;
상기 DC 버스 및 에너지 저장 기기에 연결된 DC/DC 전력 변환기;
상기 DC 버스 및 AC 버스에 연결된 전력 인버터; 및
제어 시스템;
을 포함하며,
상기 제어 시스템은 하나 이상의 제어기들을 포함하고,
상기 하나 이상의 제어기들은,
상기 전원에 의해 생성된 전압을 모니터링하도록 구성되고,
상기 전원이 제1의 사전에 결정된 문턱값보다 큰 전압을 생성하고 있는지를 결정하도록 구성되며,
상기 전원이 상기 제1의 사전에 결정된 문턱값보다 큰 전압을 생성하고 있다고 결정될 때 상기 전원이 제2의 사전에 결정된 문턱값보다 작은 전압을 생성하고 있는지를 결정하도록 구성되고,
상기 전원이 상기 제1의 사전에 결정된 문턱값 및 상기 제2의 사전에 결정된 문턱값 사이의 전압을 생성하고 있다고 결정될 때,
상기 DC/DC 전력 변환기를 제어해 MPPT 모드로 동작하여 상기 전원에 의해 생성된 에너지를 상기 에너지 저장 기기에 저장하도록 구성되며 그리고
상기 전력 인버터를 제어하여 MPPT 모드로 동작하지 않도록 구성되고,
상기 전원이 상기 제2의 사전에 결정된 문턱값보다 크거나 같은 전압을 생성하고 있다고 결정될 때,
상기 전력 인버터를 제어해 MPPT 모드로 동작하여 상기 전원에 의해 생성된 에너지를 상기 AC 버스를 통해 전력 그리드에 공급하도록 구성되며 그리고
상기 DC/DC 전력 변환기를 제어하여 MPPT 모드로 동작하지 않도록 구성되는, 전력 시스템. - 제1항에 있어서,
상기 제1의 사전에 결정된 문턱값은 상기 DC/DC 전력 변환기에서의 예상 손실들과 동일한, 전력 시스템. - 제1항에 있어서,
상기 전력 인버터는 상기 DC 버스에서의 전압이 상기 전력 인버터가 동작 가능하기까지 이르러야 하는 전압 크기인 웨이크업(wake up) 전압을 지니고, 상기 제2의 사전에 결정된 문턱값은 상기 전력 인버터의 웨이크업 전압과 동일한, 전력 시스템. - 제1항에 있어서,
상기 전원에 의해 생성된 전압은 연속적으로 모니터링되고, 상기 제어 시스템은 상기 DC/DC 전력 변환기 및 상기 전력 인버터를 연속적으로 제어하여 MPPT 모드로 동작하는 것과 MPPT 모드로 동작하지 않는 것 사이에서 전이하게 하는, 전력 시스템. - 제1항에 있어서,
상기 전원이 상기 제2의 사전에 결정된 문턱값보다 작은 전압을 생성하고 있는지를 결정함에 있어서, 상기 제어 시스템은 상기 DC 버스에서의 전압을 모니터링하도록 더 구성되는, 전력 시스템. - 제5항에 있어서,
상기 전력 시스템은,
상기 DC 버스에서의 전압을 감지하고 감지된 전압을 상기 전력 시스템으로 송신하는 센서;
를 더 포함하는, 전력 시스템. - 삭제
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201762506291P | 2017-05-15 | 2017-05-15 | |
US62/506,291 | 2017-05-15 | ||
PCT/US2018/032495 WO2018213157A1 (en) | 2017-05-15 | 2018-05-14 | Energy storage system for photovoltaic energy and method of storing photovoltaic energy |
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KR20190022679A KR20190022679A (ko) | 2019-03-06 |
KR102282617B1 true KR102282617B1 (ko) | 2021-07-28 |
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US (3) | US20180331543A1 (ko) |
EP (1) | EP3472914B1 (ko) |
JP (1) | JP7093761B2 (ko) |
KR (1) | KR102282617B1 (ko) |
CN (1) | CN109478788A (ko) |
AU (1) | AU2018269774B2 (ko) |
CA (1) | CA3028006C (ko) |
WO (1) | WO2018213157A1 (ko) |
ZA (1) | ZA201900041B (ko) |
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2018
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- 2018-05-14 JP JP2019500383A patent/JP7093761B2/ja active Active
- 2018-05-14 EP EP18729234.7A patent/EP3472914B1/en active Active
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AU2018269774A1 (en) | 2019-01-17 |
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EP3472914B1 (en) | 2020-06-10 |
JP7093761B2 (ja) | 2022-06-30 |
NZ749354A (en) | 2020-09-25 |
JP2020520208A (ja) | 2020-07-02 |
KR20190022679A (ko) | 2019-03-06 |
CA3028006C (en) | 2021-05-18 |
EP3472914A1 (en) | 2019-04-24 |
WO2018213157A1 (en) | 2018-11-22 |
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