JPWO2018173144A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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- JPWO2018173144A1 JPWO2018173144A1 JP2019506789A JP2019506789A JPWO2018173144A1 JP WO2018173144 A1 JPWO2018173144 A1 JP WO2018173144A1 JP 2019506789 A JP2019506789 A JP 2019506789A JP 2019506789 A JP2019506789 A JP 2019506789A JP WO2018173144 A1 JPWO2018173144 A1 JP WO2018173144A1
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
-
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4837—Flying capacitor 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
- 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
- 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
- H02M1/0067—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
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
Abstract
Description
図10(C)の点線は、比較例1におけるコンデンサ15の直流電圧VDCの変化を示している。この比較例1では、直流電圧VDCが保護レベルVHを超えたときにインバータ10の直流電圧制御および無効電力制御が停止され、直流電圧VDCが復帰レベルV2以下に低下したときに直流電圧制御および無効電力制御が同時に再開される。
図11は、本実施の形態の比較例2におけるコンデンサ15の直流電圧VDCを示すタイムチャートであって、図10(C)と対比される図である。比較例2では、直流電圧VDCが保護レベルVHを超えたとき(時刻t2)にインバータ10の直流電圧制御および無効電力制御が停止され、直流電圧VDCが復帰レベルV1以下に低下したとき(時刻t3)に直流電圧制御および無効電力制御がともに再開される。
図12は、本実施の形態の比較例3となる電力変換装置の要部を示す回路図である。図12において、この比較例3では、各単位変換器の直流ラインPL,NL間に抵抗素子101およびスイッチ102が直列接続される。スイッチ102は、通常はオフされている。
Claims (8)
- コンデンサと、
前記コンデンサと電力系統との間で電力を授受するインバータと、
前記コンデンサの直流電圧が第1の指令値になるように前記インバータの直流電圧制御を行なう第1の制御部と、
前記コンデンサと前記電力系統の間で授受される無効電力が第2の指令値になるように前記インバータの無効電力制御を行なう第2の制御部とを備え、
前記第1および第2の制御部は、前記直流電圧が前記第1の指令値よりも高い保護レベルを超えたことに応じて、それぞれ前記直流電圧制御および前記無効電力制御を停止し、
前記第1の制御部は、前記直流電圧が前記保護レベル以下の第1の復帰レベル以下に低下したことに応じて前記直流電圧制御を再開し、
前記第2の制御部は、前記直流電圧が前記第1の復帰レベルよりも低い第2の復帰レベル以下に低下したことに応じて前記無効電力制御を再開する、電力変換装置。 - 前記電力系統に事故が発生して前記電力系統から前記インバータを介して前記コンデンサに電流が流入すると前記直流電圧が上昇し、
前記直流電圧が前記保護レベルよりも高い許容レベルを超えた場合に前記インバータを運転すると前記インバータが破壊される、請求項1に記載の電力変換装置。 - さらに、前記直流電圧を検出する第1の検出器と、
前記無効電力を検出する第2の検出器とを備え、
前記第1の制御部は、前記第1の検出器の検出結果に基づいて前記直流電圧制御を行ない、
前記第2の制御部は、前記第2の検出器の検出結果に基づいて前記無効電力制御を行なう、請求項1に記載の電力変換装置。 - さらに、前記直流電圧が前記保護レベルを超えたことに応じて保護信号を出力し、前記直流電圧が前記第1の復帰レベル以下に低下したことに応じて第1の復帰信号を出力し、前記直流電圧が前記第2の復帰レベル以下に低下したことに応じて第2の復帰信号を出力する信号発生回路を備え、
前記第1および第2の制御部は、前記保護信号に応答して、それぞれ前記直流電圧制御および前記無効電力制御を停止し、
前記第1の制御部は、前記第1の復帰信号に応答して前記直流電圧制御を再開し、
前記第2の制御部は、前記第2の復帰信号に応答して前記無効電力制御を再開する、請求項1に記載の電力変換装置。 - 各々が前記コンデンサおよび前記インバータを含む複数の単位変換器を備え、
前記複数の単位変換器に含まれる複数の前記インバータはカスケード接続され、
前記第1の制御部は対応する前記インバータの前記直流電圧制御を行ない、
前記第2の制御部は対応する前記インバータの前記無効電力制御を行なう、請求項1に記載の電力変換装置。 - さらに、複数の前記直流電圧のうちのいずれかの直流電圧が前記保護レベルを超えたことに応じて保護信号を出力し、当該直流電圧が前記第1の復帰レベル以下に低下したことに応じて第1の復帰信号を出力し、当該直流電圧が前記第2の復帰レベル以下に低下したことに応じて第2の復帰信号を出力する信号発生回路を備え、
前記第1の制御部は、前記保護信号に応答して、対応する前記インバータの前記直流電圧制御を停止し、
前記第2の制御部は、前記保護信号に応答して、対応する前記インバータの前記無効電力制御を停止し、
前記第1の制御部は、前記第1の復帰信号に応答して、対応する前記インバータの前記直流電圧制御を再開し、
前記第2の制御部は、前記第2の復帰信号に応答して、対応する前記インバータの前記無効電力制御を再開する、請求項5に記載の電力変換装置。 - 各々が前記複数の単位変換器を含む3個のアームを備え、
前記3個のアームはデルタ接続されている、請求項5に記載の電力変換装置。 - 前記電力変換装置は、前記電力系統の無効電力を補償する無効電力補償装置として使用される、請求項7に記載の電力変換装置。
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PCT/JP2017/011405 WO2018173144A1 (ja) | 2017-03-22 | 2017-03-22 | 電力変換装置 |
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EP3637573B1 (en) * | 2017-06-08 | 2021-06-02 | Mitsubishi Electric Corporation | Power control system and control device |
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JP2002281670A (ja) * | 2001-03-19 | 2002-09-27 | Mitsubishi Electric Corp | 電力変換装置 |
JP2016100926A (ja) * | 2014-11-19 | 2016-05-30 | 三菱電機株式会社 | 電力変換装置 |
WO2016167117A1 (ja) * | 2015-04-13 | 2016-10-20 | 三菱電機株式会社 | 電力変換装置および電力システム |
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US5642275A (en) * | 1995-09-14 | 1997-06-24 | Lockheed Martin Energy System, Inc. | Multilevel cascade voltage source inverter with seperate DC sources |
JP5800154B2 (ja) | 2011-01-18 | 2015-10-28 | 国立大学法人東京工業大学 | 電力変換器およびその制御方法 |
JP6099951B2 (ja) * | 2012-11-29 | 2017-03-22 | 株式会社東芝 | 電力変換装置 |
CN104753043B (zh) * | 2015-03-27 | 2017-05-17 | 山东大学 | 一种具有直流故障穿越能力的多电平换流器及工作方法 |
FR3038796B1 (fr) * | 2015-07-09 | 2017-08-11 | Moteurs Leroy-Somer | Systeme de generation d'energie a traitement ameliore des impacts a charge, des delestages et des harmoniques |
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JP2002281670A (ja) * | 2001-03-19 | 2002-09-27 | Mitsubishi Electric Corp | 電力変換装置 |
JP2016100926A (ja) * | 2014-11-19 | 2016-05-30 | 三菱電機株式会社 | 電力変換装置 |
WO2016167117A1 (ja) * | 2015-04-13 | 2016-10-20 | 三菱電機株式会社 | 電力変換装置および電力システム |
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JP6748290B2 (ja) | 2020-08-26 |
EP3605822A4 (en) | 2020-12-16 |
US10826383B2 (en) | 2020-11-03 |
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US20200287455A1 (en) | 2020-09-10 |
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