KR20090101338A - 태양광발전기용 멀티스트링 인버터를 작동시키는 방법 - Google Patents
태양광발전기용 멀티스트링 인버터를 작동시키는 방법 Download PDFInfo
- Publication number
- KR20090101338A KR20090101338A KR1020090021087A KR20090021087A KR20090101338A KR 20090101338 A KR20090101338 A KR 20090101338A KR 1020090021087 A KR1020090021087 A KR 1020090021087A KR 20090021087 A KR20090021087 A KR 20090021087A KR 20090101338 A KR20090101338 A KR 20090101338A
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- Prior art keywords
- converter
- voltage
- converters
- input
- switch
- Prior art date
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- 238000000034 method Methods 0.000 claims abstract description 21
- 239000004065 semiconductor Substances 0.000 claims description 26
- 238000010586 diagram Methods 0.000 description 14
- 239000003990 capacitor Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
- H02J1/102—Parallel operation of DC sources being switching converters
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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
- 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
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- 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
-
- 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
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Photovoltaic Devices (AREA)
- Inverter Devices (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Claims (11)
- 태양광발전기(6)의 태양광모듈(1a,1b)용 멀티스트링 인버터의 입력측에서 태양광모듈(1a,1b) 각각에 DC-DC 컨버터(2a,2b)가 별도로 연결되어 있고, DC-DC 컨버터(2a,2b)의 각각의 출력단은 DC-AC 컨버터(3)의 입력단에 병렬로 연결되며, DC-AC 컨버터(3)가 간선(4)에 연결되어 교류전류를 공급하는 인버터를 작동시키는 방법에 있어서:각각의 DC-DC 컨버터(2a,2b)에서 입력전류, 입력전압 및/또는 입력전력을 측정해 측정값을 구하고;제한된 값을 넘으면 상기 측정값의 함수로 DC-DC 컨버터(2a,2b)의 동작상태가 변해 전력손실이 줄어들어, 태양광발전기(6)의 에너지수율이 증가하는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 DC-DC 컨버터(2a,2b)의 스위치가 연속작동상태가 아닌 온/오프 스위칭 상태에 있어서 입력전압이 출력전압과 동일해지는 작동상태로 바뀌는 것을 특징으로 하는 방법.
- 제2항에 있어서, 상기 DC-DC 컨버터(2a,2b)의 입력전압을 최고로 한 상태에서 스위치 오프하면 이 입력전압이 간선의 피크전압보다 높은 것을 특징으로 하는 방법.
- 제2항 또는 제3항에 있어서, 상기 DC-DC 컨버터(2a,2b)의 입력전압이 일정 범위에 있을 때 DC-DC 컨버터(2a,2b)가 스위치 오프되는 것을 특징으로 하는 방법.
- 제2항 내지 제4항 중의 어느 하나에 있어서, 상기 DC-DC 컨버터(2a,2b)에 간선의 피크전압보다 높은 입력전압이 걸리면 DC-DC 컨버터(2a,2b)가 스위치 오프되는 것을 특징으로 하는 방법.
- 제2항 내지 제5항 중의 어느 하나에 있어서, 상기 DC-AC 컨버터(3)의 입력전압이 간선 피크전압 범위내에 있고 태양광모듈(1a,1b)의 전력비가 한계값 이상으로 변하거나 정해진 시간이 지났을 때 DC-DC 컨버터(2a,2b)가 다시 작동되는 것을 특징으로 하는 방법.
- 제1항 내지 제6항 중의 어느 하나에 있어서, 태양광모듈(1a,1b)에 대한 그늘 검색법으로 MPT(Maximum Power Tracking; 최대출력제어법)를 이용해 최대전력이 여러개인 경우에도 적절한 작업포인트를 설정하는 것을 특징으로 하는 방법.
- 제1항 내지 제7항 중의 어느 하나에 있어서, DC-DC 컨버터(2a,2b)의 작동상태의 함수로 태양광모듈(1a,1b)의 부분 그늘을 감지하는 것을 특징으로 하는 방법.
- 제1항 내지 제8항 중의 어느 하나에 있어서, 여러가지 MPT 방법들을 바꿀 수 있는 것을 특징으로 하는 방법.
- 제1항 내지 제9항 중의 어느 하나에 있어서, 정지상태에서, DC-DC 컨버터(2a,2b)에서 반도체스위치(SH,ST,Sze,Sse), 다이오드(DH,DT,Dze,Dse) 및/또는 초크(LH,LT,Lze2,Lse1)를브리지하는 추가 스위치를 스위치온하는 것을 특징으로 하는 방법.
- 제1항 내지 제10항 중의 어느 하나에 있어서, DC-DC 컨버터(2a,2b) 각각이 부스트컨버터인 것을 특징으로 하는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08005427.3 | 2008-03-22 | ||
EP08005427.3A EP2104200B1 (de) | 2008-03-22 | 2008-03-22 | Verfahren zur ansteuerung eines multi-string-wechselrichters für photovoltaikanlagen |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090101338A true KR20090101338A (ko) | 2009-09-25 |
KR101076988B1 KR101076988B1 (ko) | 2011-10-26 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020090021087A KR101076988B1 (ko) | 2008-03-22 | 2009-03-12 | 태양광발전기용 멀티스트링 인버터를 작동시키는 방법 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8212409B2 (ko) |
EP (1) | EP2104200B1 (ko) |
KR (1) | KR101076988B1 (ko) |
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KR20180036020A (ko) | 2016-09-30 | 2018-04-09 | 헵시바주식회사 | 멀티스트링 태양광 인버터에 연결된 멀티스트링 태양전지 고장 진단 방법 |
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US8212409B2 (en) | 2012-07-03 |
US20090236917A1 (en) | 2009-09-24 |
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