JP7260056B2 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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- JP7260056B2 JP7260056B2 JP2022505665A JP2022505665A JP7260056B2 JP 7260056 B2 JP7260056 B2 JP 7260056B2 JP 2022505665 A JP2022505665 A JP 2022505665A JP 2022505665 A JP2022505665 A JP 2022505665A JP 7260056 B2 JP7260056 B2 JP 7260056B2
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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
- 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
- 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
-
- 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
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Description
図1は、実施の形態にかかる電力変換装置10の構成を示す図である。図1に示すように、電力変換装置10は、直流電源装置8と電力グリッド40との間に介在するように設けられる。
(第一推定方法)
図2は、実施の形態にかかる電力変換装置10における上位インピーダンス推定技術を説明するための回路図である。図2を用いて、実施の形態にかかる第一推定方法を説明する。
図3は、実施の形態の変形例にかかる電力変換装置10における上位インピーダンス推定技術を説明するための回路図である。図3を用いて、実施の形態にかかる第二推定方法を説明する。この第二推定方法が、第一推定方法の代わりに用いられてもよい。
以下、上位インピーダンスを用いた制御改善技術の一例を説明する。例えば、LVRT(Low voltage ride through)が発生することが考えられる。LVRTは、図2の上位系統電圧Vacが系統事故で瞬間的に低下することである。LVRTにより、最大で上位系統電圧Vacが0%まで低下することがある。
Claims (6)
- 直流電源からの直流入力電力を変換することで第一交流出力電流および第一交流出力電圧を出力する電力変換回路と、
前記電力変換回路に直列接続しており、前記第一交流出力電流および前記第一交流出力電圧を濾過することで、リアクトルとキャパシタの接続点から出力される第二交流出力電流および前記キャパシタに印加される第二交流出力電圧を生成する交流フィルタ回路と、
前記電力変換回路の停止時または出力ゼロ時もしくは任意の出力時の前記第二交流出力電圧の値である第一電圧値と前記電力変換回路が出力電力を出力している運転中の前記第二交流出力電圧の値である第二電圧値との間の差分値に基づいて、上位インピーダンス推定値を算出するように構築された算出部と、
を備える電力変換装置。 - 前記算出部は、予め定めた分子と予め定めた分母とを有するように予め定めた分数に基づいて前記上位インピーダンス推定値を算出するように構築され、
前記予め定めた分子は、前記差分値と前記キャパシタのインピーダンスとを乗算した値を含み、
前記予め定めた分母は、前記第一交流出力電流の値に前記キャパシタのインピーダンスを乗算した値から前記電力変換回路の前記運転中の前記第二交流出力電圧の値を減算した値を含む請求項1に記載の電力変換装置。 - 前記第二交流出力電流を計測するための電流計器を備え、
前記算出部は、前記差分値と前記電流計器で計測した前記第二交流出力電流の値との比に基づいて前記上位インピーダンス推定値を算出するように構築された請求項1に記載の電力変換装置。 - 前記直流電源が太陽電池パネルを含み、
前記算出部は、夜間における前記電力変換回路の運転停止時に前記第一電圧値を取得するように構築された請求項1に記載の電力変換装置。 - 前記第二交流出力電圧の値を受け取り、前記第二交流出力電圧の位相に基づいて位相指令値を出力する位相同期回路を、更に備え、
前記位相同期回路は、前記算出部を含み、
前記算出部は、前記電力変換回路の前記停止時または前記出力ゼロ時もしくは任意の出力時に前記位相同期回路に入力された前記第二交流出力電圧の値を前記第一電圧値とし、前記電力変換回路の前記運転中に前記位相同期回路に入力された前記第二交流出力電圧の値を前記第二電圧値とし、前記第一電圧値と前記第二電圧値とから前記差分値を算出するように構築された請求項1に記載の電力変換装置。 - 前記第二交流出力電圧の値を受け取り、前記第二交流出力電圧の位相に基づいて位相指令値を出力する位相同期回路を、更に備え、
前記位相同期回路は、前記上位インピーダンス推定値と電流指令値とに基づいて算出した補正量で前記位相指令値を補正するように構築された請求項1に記載の電力変換装置。
Applications Claiming Priority (1)
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PCT/JP2020/010916 WO2021181629A1 (ja) | 2020-03-12 | 2020-03-12 | 電力変換装置 |
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JPWO2021181629A1 JPWO2021181629A1 (ja) | 2021-09-16 |
JPWO2021181629A5 JPWO2021181629A5 (ja) | 2022-09-06 |
JP7260056B2 true JP7260056B2 (ja) | 2023-04-18 |
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US (1) | US20230155519A1 (ja) |
JP (1) | JP7260056B2 (ja) |
WO (1) | WO2021181629A1 (ja) |
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WO2022074803A1 (ja) * | 2020-10-08 | 2022-04-14 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
CN114720771B (zh) * | 2022-06-08 | 2022-11-15 | 阳光电源股份有限公司 | 一种逆变器及其交流绝缘阻抗检测方法 |
US11946963B2 (en) * | 2022-06-29 | 2024-04-02 | Infineon Technologies Ag | Resistance measurement for measurements from multiple devices |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006230050A (ja) | 2005-02-15 | 2006-08-31 | Tokyo Electric Power Co Inc:The | 電力系統インピーダンスの推定方法及び装置 |
JP2007124816A (ja) | 2005-10-28 | 2007-05-17 | Fuji Electric Fa Components & Systems Co Ltd | 交流交流電力変換器の制御装置 |
JP2010279115A (ja) | 2009-05-27 | 2010-12-09 | Mitsubishi Electric Corp | 電力系統インピーダンス推定装置および電力系統インピーダンス推定方法 |
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CN103580463A (zh) * | 2013-10-11 | 2014-02-12 | 友达光电股份有限公司 | 变流装置及其控制方法 |
JP6559494B2 (ja) * | 2015-07-28 | 2019-08-14 | 株式会社ダイヘン | 系統インピーダンス推定装置、インバータ装置、および、系統インピーダンス推定方法 |
TWI592671B (zh) * | 2016-08-04 | 2017-07-21 | 台達電子工業股份有限公司 | 絕緣偵測電路、電源轉換裝置及絕緣阻抗值偵測方法 |
JP6468342B1 (ja) * | 2017-12-14 | 2019-02-13 | オムロン株式会社 | 電力変換装置 |
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- 2020-03-12 JP JP2022505665A patent/JP7260056B2/ja active Active
- 2020-03-12 US US17/754,533 patent/US20230155519A1/en active Pending
- 2020-03-12 WO PCT/JP2020/010916 patent/WO2021181629A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006230050A (ja) | 2005-02-15 | 2006-08-31 | Tokyo Electric Power Co Inc:The | 電力系統インピーダンスの推定方法及び装置 |
JP2007124816A (ja) | 2005-10-28 | 2007-05-17 | Fuji Electric Fa Components & Systems Co Ltd | 交流交流電力変換器の制御装置 |
JP2010279115A (ja) | 2009-05-27 | 2010-12-09 | Mitsubishi Electric Corp | 電力系統インピーダンス推定装置および電力系統インピーダンス推定方法 |
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JPWO2021181629A1 (ja) | 2021-09-16 |
WO2021181629A1 (ja) | 2021-09-16 |
US20230155519A1 (en) | 2023-05-18 |
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