JP6167252B2 - 電力変換装置、電力管理方法、および電力変換システム - Google Patents
電力変換装置、電力管理方法、および電力変換システム Download PDFInfo
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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
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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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- 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
-
- 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
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
-
- 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
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- 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)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
- Control Of Eletrric Generators (AREA)
Description
図1は、本発明の一実施形態に係る電力変換装置を備えるシステムの構成例を示すブロック図である。図1に示すように、電力変換装置(パワーコンディショナ)1は、複数のDC/DCコンバータ(入力部)11と、中間リンクコンデンサ12と、インバータ13と、制御部14と、通信部15とを備える。電力変換システムは、電力変換装置1と、複数の発電装置(直流入力電源)10とからなる。なお、図1における電力変換装置1の出力は単相2線式であるが、出力の形式はこれに限らず例えば3相式であってもよい。
次に、本発明の第2の実施形態について説明する。第1の実施形態では、発電装置10間の日射量が同一とみなせる場合について説明した。しかし、寄棟型の屋根の各方位に各発電装置10を設置する場合など、発電装置10間の日射量が異なる場合がある。そこで、第2の実施形態では、発電装置10間の日射量が同一でない場合について説明する。第2の実施形態の電力変換装置1の構成は第1の実施形態とで同一であるため、説明を省略する。
2 電力管理装置
3 交流入力機器
10 発電装置
11 DC/DCコンバータ
12 中間リンクコンデンサ
13 インバータ
14 制御部
15 通信部
16 DC/DCコンバータ
18 スイッチング素子
19 入力電圧センサ
20 入力電流センサ
21 中間リンク電圧センサ
141 デューティ比制御部
142 制御モード判定部
143 MPPT制御部
144 負荷追従制御部
145 入力電圧制御部
146 クロック生成部
147 PWMユニット
148 発電余力算出部
Claims (10)
- 複数の発電装置からそれぞれの発電電力を入力する複数の入力部と、
前記複数の入力部のうち少なくとも1つの入力部を優先的にMPPT制御し、該入力部に接続される発電装置の発電電流と、他の入力部に接続される発電装置のMPPT制御時の発電電流または発電電力とを用いて、他の入力部に接続される発電装置の発電余力を算出して取得する制御部と、
を備えることを特徴とする電力変換装置。 - 前記制御部は、前記複数の入力部のうち、最大発電電力が最も小さい発電装置が接続される入力部を優先的にMPPT制御することを特徴とする、請求項1に記載の電力変換装置。
- 前記制御部は、前記他の入力部に接続される発電装置の最大発電電力を算出し、該最大発電電力と実際の発電電力との差分を前記発電余力とすることを特徴とする、請求項1または2に記載の電力変換装置。
- 前記制御部は、電力系統から解列した自立運転時に、前記発電余力を取得することを特徴とする、請求項1から3のいずれか一項に記載の電力変換装置。
- 前記複数の入力部は、前記複数の発電装置から入力される直流電力をそれぞれ変圧する複数のDC/DCコンバータであることを特徴とする、請求項1から4のいずれか一項に記載の電力変換装置。
- 前記複数のDC/DCコンバータの出力電圧を一括して入力するインバータを更に備えることを特徴とする、請求項5に記載の電力変換装置。
- 前記複数の発電装置のそれぞれは、複数の太陽電池モジュールを直列接続した太陽電池ストリングであることを特徴とする、請求項1から6のいずれか一項に記載の電力変換装置。
- 前記複数の太陽電池モジュールは全て同じ特性を有することを特徴とする、請求項7に記載の電力変換装置。
- 電力変換装置と、
前記電力変換装置に接続されるそれぞれ複数の発電装置と、
を備える電力変換システムであって、
前記電力変換装置は、
前記複数の発電装置からそれぞれの発電電力を入力する複数の入力部と、
前記複数の入力部のうち少なくとも1つの入力部を優先的にMPPT制御し、該入力部に接続される発電装置の発電電流と、他の入力部に接続される発電装置のMPPT制御時の発電電流または発電電力とを用いて、他の入力部に接続される発電装置の発電余力を算出して取得する制御部と、
を備えることを特徴とする電力変換システム。 - 複数の発電装置からの入力電力を所定の出力に変換する電力変換装置を用いた電力管理方法であって、
複数の発電装置からそれぞれの発電電力を、前記電力変換装置の複数の入力部に入力させるステップと、
前記複数の入力部のうち少なくとも1つを優先的にMPPT制御するステップと、
前記MPPT制御された入力部に入力される発電電流と、他の入力部に接続される発電装置のMPPT制御時の発電電流または発電電力とを用いて、他の入力部に接続される発電装置の発電余力を算出して取得するステップと、
を含むことを特徴とする電力管理方法。
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EP3264557B1 (en) * | 2015-02-25 | 2020-11-04 | KYOCERA Corporation | Power conditioning system and power conditioning method |
EP3337022A1 (en) * | 2016-12-15 | 2018-06-20 | DET International Holding Limited | Control of a multiple input solar power inverter |
CN106708163B (zh) * | 2017-03-14 | 2018-07-27 | 华北电力大学(保定) | 以最大功率点旋转备用容量跟踪的光伏发电***控制方法 |
US10554050B2 (en) | 2017-04-21 | 2020-02-04 | Futurewei Technologies, Inc. | Method and apparatus for controlling solar power systems |
US10886749B2 (en) * | 2018-10-23 | 2021-01-05 | Hewlett Packard Enterprise Development Lp | Synchronized startup of power supplies in electrical systems |
US11205896B2 (en) | 2018-11-21 | 2021-12-21 | Black & Decker Inc. | Solar power system |
JP7336660B2 (ja) * | 2019-06-10 | 2023-09-01 | パナソニックIpマネジメント株式会社 | 制御システム、電力変換システム、制御方法、及びプログラム |
KR102307646B1 (ko) * | 2019-12-05 | 2021-10-05 | 주식회사 포스코 | 태양광 발전 장치 |
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JP2003309928A (ja) | 2002-04-16 | 2003-10-31 | Nippon Futo Soko Kk | 電力管理システム |
JP2005086953A (ja) | 2003-09-10 | 2005-03-31 | Nippon Telegr & Teleph Corp <Ntt> | エネルギー需給制御方法及び装置 |
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US8576591B2 (en) * | 2010-09-30 | 2013-11-05 | Astec International Limited | Converters and inverters for photovoltaic power systems |
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EP3026521B1 (en) | 2021-11-24 |
JPWO2015011931A1 (ja) | 2017-03-02 |
CN105378577A (zh) | 2016-03-02 |
EP3026521A1 (en) | 2016-06-01 |
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