JP2022111074A - 電力変換システム及びその制御方法 - Google Patents
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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
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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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
- 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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- 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
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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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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- 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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- 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
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/0093—Converters characterised by their input or output configuration wherein the output is created by adding a regulated voltage to or subtracting it from an unregulated input
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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
- H02M3/1582—Buck-boost converters
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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
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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
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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
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims (28)
- n個のチョッパ、及びn個の直流素子を備える電力変換システムであって、
前記n個のチョッパ各々は、スイッチングブリッジレグ、第1端が前記スイッチングブリッジレグの中性点に接続されるインダクタンス、及び前記スイッチングブリッジレグに並列接続される第1キャパシタを備え、
前記n個の直流素子は、前記n個のチョッパ各々に対応する直流電源又は直流負荷であり、前記n個の直流素子の第1端が互いに連結され、第2端が対応するチョッパの前記インダクタンスの第2端にそれぞれ接続され、
前記チョッパ各々のスイッチングブリッジレグは並列接続され、nは2以上の自然数であることを特徴とする、電力変換システム。 - 前記n個の直流素子のうち少なくとも1つの直流素子は直流電源であり、かつ少なくとも1つの直流素子は直流負荷である、請求項1に記載の電力変換システム。
- 前記スイッチングブリッジレグは、直列接続される第1スイッチと第2スイッチを備え、前記第1スイッチと前記第2スイッチの共通接続点は、前記スイッチングブリッジレグの中性点である、請求項1に記載の電力変換システム。
- 前記スイッチングブリッジレグは、直列接続される第3スイッチ、第4スイッチ、第5スイッチおよび第6スイッチを備え、
前記各チョッパは、1つのフライングキャパシタを更に備え、
前記フライングキャパシタは、前記第3スイッチと前記第4スイッチの共通接続点と、前記第5スイッチと前記第6スイッチの共通接続点との間に電気的に結合され、前記第4スイッチと前記第5スイッチの共通接続点は、前記スイッチングブリッジレグの中性点である、請求項1に記載の電力変換システム。 - 前記直流電源は、電池、整流電源及びスーパーキャパシタのうち少なくとも1種である、請求項1に記載の電力変換システム。
- 前記直流電源は、DC/DCコンバータを更に備え、かつ前記インダクタンスと前記電池、前記整流電源又は前記スーパーキャパシタとの間に電気的に結合される、請求項5に記載の電力変換システム。
- 前記直流負荷は、電池、スーパーキャパシタ、抵抗、DC/DCコンバータ及びDC/ACコンバータの直流端のうち少なくとも1つの直流端である、請求項1、2、5又は6に記載の電力変換システム。
- 前記チョッパ各々は、第2キャパシタを更に備え、前記第2キャパシタは、前記スイッチングブリッジレグの第1端及び/又は第2端と前記インダクタンスの第2端との間に電気的に結合される、請求項1~6の何れか1項に記載の電力変換システム。
- 前記第1キャパシタの電圧は、前記直流素子の電圧より低い、請求項1~6の何れか1項に記載の電力変換システム。
- 補償電源を更に備え、前記補償電源と前記スイッチングブリッジレグは並列接続される、請求項1~6の何れか1項に記載の電力変換システム。
- 前記n個の直流素子のうち1つの直流素子は、インバータの直流端である、請求項1に記載の電力変換システム。
- 前記スイッチングブリッジレグを制御する制御手段を更に備える、請求項11に記載の電力変換システム。
- 前記インバータの直流端電圧値は、残り(n-1)個の直流素子の電圧の加重平均に等しい、請求項11に記載の電力変換システム。
- 前記加重平均において、前記残り(n-1)個の直流素子それぞれの電圧算術重みは、該直流素子を流れる電流と前記残り(n-1)個の直流素子を流れる総電流との比である、請求項13に記載の電力変換システム。
- 残り(n-1)個の直流素子は、電池パックであり、前記制御手段は、前記残り(n-1)個の直流素子を流れる電流を制御する、請求項12に記載の電力変換システム。
- 前記第1キャパシタの電圧は、対応する前記電池パックの定格電圧の50%より低い、請求項15に記載の電力変換システム。
- 残り(n-1)個の直流素子は、太陽電池ストリングである、請求項12に記載の電力変換システム。
- 前記インバータの直流端電圧が前記(n-1)個の前記太陽電池ストリングの最大電力点(MPP)電圧の平均値近傍にあるとき、前記制御手段は、各太陽電池ストリングのMPP電圧を目標値として各インダクタンスの第2端電圧を制御する、請求項17に記載の電力変換システム。
- 電力変換システムに適用される制御方法であって、該制御方法は、
各々が、スイッチングブリッジレグ、第1端が前記スイッチングブリッジレグの中性点に接続されるインダクタンス、及び前記スイッチングブリッジレグに並列接続される第1キャパシタを備えたn個のチョッパを提供するステップ、
n個の直流素子を提供するステップ、及び
前記スイッチングブリッジレグを制御することにより、前記直流素子を流れる電流又は前記直流素子の電圧を調節するステップを含み、
前記n個の直流素子は、前記n個のチョッパ各々に対応する直流電源又は直流負荷であり、前記n個の直流素子の第1端が互いに連結され、第2端が対応するチョッパの前記インダクタンスの第2端にそれぞれ接続され、
前記チョッパ各々のスイッチングブリッジレグは並列接続され、nは2以上の自然数であることを特徴とする、制御方法。 - 前記n個の直流素子のうち1つの直流素子は、インバータの直流端である、請求項19に記載の制御方法。
- 前記インバータの直流端電圧を制御して残り(n-1)個の直流素子の電圧の加重平均となるようにする、請求項20に記載の制御方法。
- 前記加重平均において、前記残り(n-1)個の直流素子それぞれの電圧算術重みは、該直流素子を流れる電流と前記残り(n-1)個の直流素子を流れる総電流との比である、請求項21に記載の制御方法。
- 残り(n-1)個の直流素子は、電池パックである、請求項20に記載の制御方法。
- 前記第1キャパシタの電圧を制御して一定値になるようにする、請求項23に記載の制御方法。
- 前記一定値は、前記電池パック及び前記インバータの直流端の電圧より低い値である、請求項24に記載の制御方法。
- 前記一定値は、前記電池パックの定格電圧の50%より低い値である、請求項25に記載の制御方法。
- 残り(n-1)個の直流素子は、太陽電池ストリングである、請求項20に記載の制御方法。
- 前記インバータの直流端電圧を制御して前記残り(n-1)個の前記太陽電池ストリングのMPP電圧の平均値に近づけ、かつ各太陽電池ストリングのMPP電圧を目標値として各インダクタンスの第2端電圧を制御する、請求項27に記載の制御方法。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007166783A (ja) * | 2005-12-14 | 2007-06-28 | Mitsubishi Electric Corp | 電力変換装置 |
JP2012165615A (ja) * | 2011-02-09 | 2012-08-30 | Ntt Data Intellilink Corp | 電源供給システム |
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JP2012165615A (ja) * | 2011-02-09 | 2012-08-30 | Ntt Data Intellilink Corp | 電源供給システム |
JP2015144510A (ja) * | 2014-01-31 | 2015-08-06 | パナソニックIpマネジメント株式会社 | 電力変換装置 |
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