CN102013691A - Battery energy storage topology structure without transformer based on MMC modularized multi-level inverter - Google Patents

Battery energy storage topology structure without transformer based on MMC modularized multi-level inverter Download PDF

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Publication number
CN102013691A
CN102013691A CN2010102340813A CN201010234081A CN102013691A CN 102013691 A CN102013691 A CN 102013691A CN 2010102340813 A CN2010102340813 A CN 2010102340813A CN 201010234081 A CN201010234081 A CN 201010234081A CN 102013691 A CN102013691 A CN 102013691A
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CN
China
Prior art keywords
energy storage
battery energy
unit
power
mmc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010102340813A
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Chinese (zh)
Inventor
魏西平
李太峰
杨洋
赵淑玉
张坤
张跃平
胡涛
王振
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Rongxin Power Electronic Co Ltd
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Rongxin Power Electronic Co Ltd
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Priority to CN2010102340813A priority Critical patent/CN102013691A/en
Publication of CN102013691A publication Critical patent/CN102013691A/en
Priority to PCT/CN2011/076859 priority patent/WO2012024984A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02M7/49—Combination of the output voltage waveforms of a plurality of 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
    • H02M7/483—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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping 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
    • 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
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Abstract

The present invention relates to a battery energy storage topology structure without the transformer based on MMC modularized multi-level inverter: every phase is connected in series with several subunits which are composed of half-bridge power modules and battery energy storage modules, and get access to the electrical network through buffer inductance. The half-bridge power module is formed by the series connection of an even number of n power units, which is divided into two groups, the upper group and the lower group; the number of each group's power units is n/2; the number of output phase voltage level step is n/2 + 1; the number of line voltage level step is n + 1; the output terminal of every phase is the midpoint of two groups of units, and the output terminal is connected with each group of unit by coupling inductance or uncoupling inductance. The power unit is in a half-bridge structure. As the topology is in parallel connection with electrical network, the electric power pollution of electric network can be inhibited; and the topology can make up for the instability of photovoltaic or wind energy generation to provide uninterrupted, clean, stable and high-qualified sine wave voltage of no frequency discontinuity to the load of the electrical network.

Description

A kind of transless battery energy storage topological structure based on MMC modular multilevel inverter
Technical field
The present invention relates to a kind of transless battery energy storage topology and can be used for the high-voltage electric power system field, make the electrical network supply load reliable, high-quality voltage based on MMC (Modular Multilevel Converter) modular multilevel inverter.
Background technology
At present, there are following nine kinds of problems at least in electrical network: outage, thunderbolt spike, surge, frequency oscillation, voltage jump, voltage fluctuation, frequency drift, electric voltage dropping, impulse disturbances etc.Regenerative resource is also extremely instability of photovoltaic or electric energy that wind energy produced for example, the new forms of energy scale of using that is incorporated into the power networks is big more, electrical network is just dangerous more, practice according to domestic and international honourable electric station grid connection, can realize the balance output of generation of electricity by new energy power making large-scale wind power and solar electric power incorporate conventional electrical network easily and reliably into by energy storage technology.
At present the electric power energy storage device all is in parallel by transformer and electrical network, adopts transformer, makes that equipment investment is big, occupation of land is many, the cost height, and the production cycle is long.
Summary of the invention
The purpose of this invention is to provide a kind of transless battery energy storage topological structure based on MMC modular multilevel inverter, this topology is connected in parallel on the electrical network, those electric pollutions that can suppress electrical network, can compensate the unsteadiness of photovoltaic or wind power generation, to the load on the electrical network provide uninterruptedly, clean, stable, no frequency discontinuity, high-quality sine voltage.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of transless battery energy storage topological structure based on MMC modular multilevel inverter, this topological structure comprises three-phase, every subelement that is made of a plurality of semi-bridge type power models and battery energy storage module is cascaded, and inserts electrical network through buffer inductance.
Described semi-bridge type power model is formed by an even number n power unit cascade, is divided into two groups up and down, and every group power cell number is n/2, and output phase voltage level ladder number is n/2+1, and line voltage level number is n+1; The output of every phase is the midpoint of two groups of unit, and is connected with coupling or non-coupling inductance between output and the every group of unit.
Described power cell is a half-bridge structure, and switching device IGBT1 and IGBT2 are in series, and IGBT1 of parallel connection direct capacitor C, and switching device again and IGBT2 be inverse parallel diode D1, D2 respectively; The common port of IGBT1 and IGBT2, the common port of capacitor C and IGBT2 link to each other with other unit as the output of each unit.
After described battery energy storage module is connected by battery pack E and switch S, in parallel with capacitor C.Described switch S is parallel resistance R ' also, when switch S is the high speed turn-off device, during as IGBT, also can save the resistance R that is in parallel with it '.
Compared with prior art, the invention has the beneficial effects as follows:
1) input transless, and then under the battery energy storage topology apparatus that makes this kind and same voltage, the power grade comparing of transformer arranged, the production cycle reduces half, volume reduces half, and cost reduces half, and floor space reduces half, convenient transportation, simple in structure;
2) battery energy storage has the energy efficiency height, can realize fast charging and discharging, and the life-span is long.
3) modulator approach adopts the method for phase-shifting carrier wave, can produce the multi-ladder sine wave, obtains good output voltage waveforms with less switching frequency;
4) reduce or to improve capacitance grade fairly simple, a number of unit that only needs to reduce or increase series connection gets final product.
Description of drawings
Fig. 1 is based on the transless battery energy storage topological structure of MMC modular multilevel;
Fig. 2 is based on the transless battery energy storage topology basic cell structure figure of MMC modular multilevel.
Embodiment
See Fig. 1, a kind of transless battery energy storage topological structure based on MMC modular multilevel inverter, this topological structure comprises three-phase, and every subelement that is made of a plurality of semi-bridge type power models and battery energy storage module is cascaded, and inserts electrical network through buffer inductance L.Inductance L also connects buffer resistance R, and after buffer resistance R and K switch 2 were in parallel, K1 was connected with circuit breaker.
The semi-bridge type power model is formed by an even number n power unit cascade, is divided into two groups up and down, and every group power cell number is n/2, and output phase voltage level ladder number is n/2+1, and line voltage level number is n+1; The output of every phase is the midpoint of two groups of unit, and between output and the every group of unit with coupling or non-coupling inductance L A, L B, L CConnect.
See Fig. 2, power cell is a half-bridge structure, and switching device IGBT1 and IGBT2 are in series, and IGBT1 of parallel connection direct capacitor C, and switching device again and IGBT2 be inverse parallel diode D1, D2 respectively; The common port of IGBT1 and IGBT2, the common port of capacitor C and IGBT2 link to each other with other unit as the output of each unit.
After the battery energy storage module was connected by battery pack E and switch S, in parallel with capacitor C, switch S is parallel resistance R ' also.Switch S control battery absorbs or discharges electric energy.When switch S is the high speed turn-off device, during as IGBT, also can save the resistance R that is in parallel with it '.
See Fig. 1, a kind of battery energy storage topology based on MMC of multilevel unit-in-series in conjunction with certain modulator approach, can produce many level-variables sine voltage that electrical network needs.This battery energy storage topological structure is mainly by three phase compositions, whenever formed by the individual power unit cascade of n (n is an even number).The series unit number is called unit progression, and the output of every phase is in the midpoint of upper and lower two groups of unit, and is connected with coupling or non-coupling inductance between output and the every group of unit, makes output waveform more level and smooth.This battery energy storage topology is directly exported to the high-quality ac high-voltage of electrical network from A, B, C side.
When line voltage produces spike, voltage is powered to DC side by diode, opens each unit switch S of (as shown in Figure 2), at this moment, battery energy storage topology dc bus capacitor C of the present invention and battery pack E absorb electric network peak, and then have suppressed the influence of electric network peak to equipment on the electrical network.When line voltage falls suddenly or interrupts, by controlling each unit IGBT1 of (as shown in Figure 2), IGBT2, open switch S, at this moment, the energy feedback grid among dc bus capacitor C and the battery resistance E makes electrical network output normal sinusoidal wave.When line voltage just often, turn-off IGBT1, IGBT2, stopcock S, at this moment, store energy is in battery pack E.
The electrical network that battery energy storage topology of the present invention can be 1～500KV is done redundant electrical power, this battery energy storage topology is by the method for units in series, and the output high pressure has saved step-up transformer used when being incorporated into the power networks, saved great amount of cost and topological structure is simple, easy to removal and installation.Described unit adopts the MMC unit, i.e. calibration power unit, and the type unit is a half-bridge structure, two IGBT series connection up and down, dc capacitor in parallel again, battery in parallel again behind the electric capacity.When needs improved electric pressure, the number of unit that only needs to improve series connection got final product.In addition,, can export many level waveform, produce high-quality sine voltage by modulation algorithm owing to adopt multiple unit series connection power cell output high pressure.

Claims (5)

1. transless battery energy storage topological structure based on MMC modular multilevel inverter, it is characterized in that, this topological structure comprises three-phase, and every subelement that is made of a plurality of semi-bridge type power models and battery energy storage module is cascaded, and inserts electrical network through buffer inductance.
2. the transless battery energy storage topological structure based on MMC modular multilevel inverter according to claim 1, it is characterized in that, described semi-bridge type power model is formed by an even number n power unit cascade, be divided into two groups up and down, every group power cell number is n/2, output phase voltage level ladder number is n/2+1, and line voltage level number is n+1; The output of every phase is the midpoint of two groups of unit, and is connected with coupling or non-coupling inductance between output and the every group of unit.
3. the transless battery energy storage topological structure based on MMC modular multilevel inverter according to claim 2, it is characterized in that, described power cell is a half-bridge structure, switching device IGBT1 and IGBT2 are in series, IGBT1 of parallel connection direct capacitor C, and switching device again and IGBT2 be inverse parallel diode D1, D2 respectively; The common port of IGBT1 and IGBT2, the common port of capacitor C and IGBT2 link to each other with other unit as the output of each unit.
4. according to each described transless battery energy storage topological structure in the claim 1 to 3, it is characterized in that based on MMC modular multilevel inverter, after described battery energy storage module is connected by battery pack E and switch S, in parallel with capacitor C again.
5. the transless battery energy storage topological structure based on MMC modular multilevel inverter according to claim 4 is characterized in that described switch S is parallel resistance R ' also.
CN2010102340813A 2010-07-22 2010-07-22 Battery energy storage topology structure without transformer based on MMC modularized multi-level inverter Pending CN102013691A (en)

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PCT/CN2011/076859 WO2012024984A1 (en) 2010-07-22 2011-07-05 Modular multilevel converter-based transformerless battery energy storage topology

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917016A (en) * 2010-07-21 2010-12-15 北京交通大学 Energy-saving type cascade multilevel photovoltaic grid-connected generating control system
WO2012024984A1 (en) * 2010-07-22 2012-03-01 荣信电力电子股份有限公司 Modular multilevel converter-based transformerless battery energy storage topology
CN103248210A (en) * 2013-04-23 2013-08-14 西安交通大学 Power synchronous control method for reducing secondary fluctuations of direct current side voltage
CN103731019A (en) * 2013-12-03 2014-04-16 南方电网科学研究院有限责任公司 Over modulation method of modular multi-level converter station
CN104167760A (en) * 2014-07-28 2014-11-26 湖南大学 Modularization multi-level photovoltaic grid connected system and control method thereof
CN104201726A (en) * 2014-07-31 2014-12-10 华为技术有限公司 UPS (Uninterrupted Power Supply) power supply system and current converting method thereof
CN104518518A (en) * 2014-11-27 2015-04-15 国家电网公司 MMC topological structure based hybrid energy storage system
CN104538982A (en) * 2014-12-05 2015-04-22 西安交通大学 Distributed energy storage system control method based on modular multilevel topological structure
CN104917418A (en) * 2015-06-16 2015-09-16 北京亿利智慧能源科技有限公司 Energy storage type MMC current transformer adopting independent control of battery current
CN105375515A (en) * 2015-11-11 2016-03-02 武汉大学 Modularized multi-level comprehensive apparatus combined with photovoltaic generation
CN105429177A (en) * 2015-12-16 2016-03-23 国网青海省电力公司 Modularized photovoltaic energy storage system
CN105445621A (en) * 2015-12-22 2016-03-30 南京南瑞继保电气有限公司 Fault detection device of flexible direct-current line, charging method of fault detection device and detection method
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
WO2016150467A1 (en) * 2015-03-20 2016-09-29 Siemens Aktiengesellschaft Energy storage arrangement
CN106208396A (en) * 2016-08-01 2016-12-07 浙江大学 A kind of distributing hybrid energy-storing based on MMC topology and electric power compensation system
CN106877713A (en) * 2017-03-30 2017-06-20 上海交通大学 A kind of accumulation energy type converter topology with fault ride-through capacity
CN106877726A (en) * 2017-03-30 2017-06-20 上海交通大学 A kind of control method of the accumulation energy type converter topology with fault ride-through capacity
CN106981980A (en) * 2017-04-14 2017-07-25 许继集团有限公司 A kind of full-bridge MMC starts control method and system
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US10270328B2 (en) 2015-02-04 2019-04-23 Abb Schweiz Ag Multilevel converter with energy storage
CN113270881A (en) * 2021-04-23 2021-08-17 华为技术有限公司 Energy storage system, balance control method of energy storage system and photovoltaic power generation system
CN113364320A (en) * 2021-06-18 2021-09-07 浙江大学 Boost multi-level inverter circuit and control method thereof
US11424620B2 (en) 2019-10-29 2022-08-23 Industrial Technology Research Institute Three-phase expandable AC system based on battery reconfiguration and control method thereof

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10069430B2 (en) 2013-11-07 2018-09-04 Regents Of The University Of Minnesota Modular converter with multilevel submodules
CN108604797B (en) 2015-06-29 2020-03-10 Abb瑞士股份有限公司 Multilevel power converter and method for controlling multilevel power converter
US10355617B2 (en) 2015-11-13 2019-07-16 Siemens Aktiengesellschaft Medium voltage transformerless multilevel converter and method for controlling a medium voltage transformerless multilevel converter
JP6960132B2 (en) * 2016-08-23 2021-11-05 国立大学法人 長崎大学 Power conditioner
CN106849718B (en) * 2017-02-17 2019-01-29 许继集团有限公司 One seed module topology and a kind of MMC inverter
CN107154631B (en) * 2017-05-22 2024-01-23 上海电力学院 Dynamic voltage regulating device and regulating method based on modularized multi-level inverter
CN108616143B (en) * 2018-05-15 2021-02-12 华北电力大学 Flexible multi-state switch reliability modeling method considering voltage load sharing mechanism
CN109742782A (en) * 2019-02-12 2019-05-10 广州智光储能科技有限公司 A kind of device and method utilized suitable for retired power battery echelon
CN110266018A (en) * 2019-06-04 2019-09-20 中国科学院电工研究所 Unified Power Quality Controller and its control method and control system
CN111934572B (en) * 2020-06-29 2022-10-04 中国电力科学研究院有限公司 Super-large-scale energy storage MMC converter device and energy storage control method
CN114336701B (en) * 2021-12-01 2023-11-24 国网江苏省电力有限公司盐城供电分公司 Medium-voltage direct-hanging energy storage system topological structure suitable for high power and large capacity
DE102022109241B3 (en) 2022-04-14 2022-11-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Multilevel converter with three-switch submodules with symmetrical half-bridge circuit and parallel connectivity
CN116073690B (en) * 2023-03-10 2023-06-27 闽南理工学院 MMC energy storage system mixed modulation method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101682190A (en) * 2007-04-16 2010-03-24 西门子公司 Active filter having multilevel topology
CN201774263U (en) * 2010-07-22 2011-03-23 荣信电力电子股份有限公司 Non-transformer battery energy storage topological structure based on MMC modular multi-level inverter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642275A (en) * 1995-09-14 1997-06-24 Lockheed Martin Energy System, Inc. Multilevel cascade voltage source inverter with seperate DC sources
DE102005045091B4 (en) * 2005-09-21 2007-08-30 Siemens Ag Control method for redundancy use in case of failure of a multiphase power converter with distributed energy storage
CN101611535B (en) * 2007-03-13 2013-06-19 西门子公司 Method for limiting damage to a converter having a power semiconductor in the case of a short circuit of an intermediate direct current circuit
WO2010040388A1 (en) * 2008-10-07 2010-04-15 Abb Technology Ag Multilevel converter and method for compensating active and reactive power in a high voltage network
WO2010102667A1 (en) * 2009-03-11 2010-09-16 Abb Technology Ag A modular voltage source converter and an energy source unit
CN102013691A (en) * 2010-07-22 2011-04-13 荣信电力电子股份有限公司 Battery energy storage topology structure without transformer based on MMC modularized multi-level inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101682190A (en) * 2007-04-16 2010-03-24 西门子公司 Active filter having multilevel topology
CN201774263U (en) * 2010-07-22 2011-03-23 荣信电力电子股份有限公司 Non-transformer battery energy storage topological structure based on MMC modular multi-level inverter

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917016B (en) * 2010-07-21 2012-10-31 北京交通大学 Energy-saving type cascade multilevel photovoltaic grid-connected generating control system
CN101917016A (en) * 2010-07-21 2010-12-15 北京交通大学 Energy-saving type cascade multilevel photovoltaic grid-connected generating control system
WO2012024984A1 (en) * 2010-07-22 2012-03-01 荣信电力电子股份有限公司 Modular multilevel converter-based transformerless battery energy storage topology
US11742777B2 (en) 2013-03-14 2023-08-29 Solaredge Technologies Ltd. High frequency multi-level inverter
US11545912B2 (en) 2013-03-14 2023-01-03 Solaredge Technologies Ltd. High frequency multi-level inverter
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
CN103248210A (en) * 2013-04-23 2013-08-14 西安交通大学 Power synchronous control method for reducing secondary fluctuations of direct current side voltage
CN103248210B (en) * 2013-04-23 2015-08-05 西安交通大学 A kind of power synchronous control method for reducing the fluctuation of DC voltage secondary
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CN103731019A (en) * 2013-12-03 2014-04-16 南方电网科学研究院有限责任公司 Over modulation method of modular multi-level converter station
US10680505B2 (en) 2014-03-26 2020-06-09 Solaredge Technologies Ltd. Multi-level inverter
US10680506B2 (en) 2014-03-26 2020-06-09 Solaredge Technologies Ltd. Multi-level inverter
US10886832B2 (en) 2014-03-26 2021-01-05 Solaredge Technologies Ltd. Multi-level inverter
US10886831B2 (en) 2014-03-26 2021-01-05 Solaredge Technologies Ltd. Multi-level inverter
US10153685B2 (en) 2014-03-26 2018-12-11 Solaredge Technologies Ltd. Power ripple compensation
US10700588B2 (en) 2014-03-26 2020-06-30 Solaredge Technologies Ltd. Multi-level inverter
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
US11296590B2 (en) 2014-03-26 2022-04-05 Solaredge Technologies Ltd. Multi-level inverter
US11632058B2 (en) 2014-03-26 2023-04-18 Solaredge Technologies Ltd. Multi-level inverter
US10404154B2 (en) 2014-03-26 2019-09-03 Solaredge Technologies Ltd Multi-level inverter with flying capacitor topology
US11855552B2 (en) 2014-03-26 2023-12-26 Solaredge Technologies Ltd. Multi-level inverter
CN104167760A (en) * 2014-07-28 2014-11-26 湖南大学 Modularization multi-level photovoltaic grid connected system and control method thereof
CN104167760B (en) * 2014-07-28 2016-03-30 湖南大学 A kind of modular multilevel photovoltaic parallel in system and control method thereof
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CN104518518A (en) * 2014-11-27 2015-04-15 国家电网公司 MMC topological structure based hybrid energy storage system
CN104538982B (en) * 2014-12-05 2016-08-17 西安交通大学 The control method of distributed energy storage system based on modular multilevel topological structure
CN104538982A (en) * 2014-12-05 2015-04-22 西安交通大学 Distributed energy storage system control method based on modular multilevel topological structure
US10270328B2 (en) 2015-02-04 2019-04-23 Abb Schweiz Ag Multilevel converter with energy storage
WO2016150467A1 (en) * 2015-03-20 2016-09-29 Siemens Aktiengesellschaft Energy storage arrangement
CN104917418B (en) * 2015-06-16 2017-10-27 北京亿利智慧能源科技有限公司 A kind of accumulation energy type MMC current transformers of use battery current independent control
CN104917418A (en) * 2015-06-16 2015-09-16 北京亿利智慧能源科技有限公司 Energy storage type MMC current transformer adopting independent control of battery current
CN105375515B (en) * 2015-11-11 2019-11-22 武汉大学 A kind of modular multilevel comprehensive compensating device of combination photovoltaic power generation
CN105375515A (en) * 2015-11-11 2016-03-02 武汉大学 Modularized multi-level comprehensive apparatus combined with photovoltaic generation
CN105429177B (en) * 2015-12-16 2019-03-12 国网青海省电力公司 A kind of Modular photovoltaic energy-storage system
CN105429177A (en) * 2015-12-16 2016-03-23 国网青海省电力公司 Modularized photovoltaic energy storage system
CN105445621A (en) * 2015-12-22 2016-03-30 南京南瑞继保电气有限公司 Fault detection device of flexible direct-current line, charging method of fault detection device and detection method
CN106208396B (en) * 2016-08-01 2019-05-31 浙江大学 A kind of distributing hybrid energy-storing based on MMC topology and electric power compensation system
CN106208396A (en) * 2016-08-01 2016-12-07 浙江大学 A kind of distributing hybrid energy-storing based on MMC topology and electric power compensation system
CN106877713B (en) * 2017-03-30 2019-05-17 上海交通大学 A kind of accumulation energy type converter topology with fault ride-through capacity
CN106877726B (en) * 2017-03-30 2019-05-03 上海交通大学 A kind of control method of the accumulation energy type converter topology with fault ride-through capacity
CN106877726A (en) * 2017-03-30 2017-06-20 上海交通大学 A kind of control method of the accumulation energy type converter topology with fault ride-through capacity
CN106877713A (en) * 2017-03-30 2017-06-20 上海交通大学 A kind of accumulation energy type converter topology with fault ride-through capacity
CN106981980A (en) * 2017-04-14 2017-07-25 许继集团有限公司 A kind of full-bridge MMC starts control method and system
US11424620B2 (en) 2019-10-29 2022-08-23 Industrial Technology Research Institute Three-phase expandable AC system based on battery reconfiguration and control method thereof
CN113270881A (en) * 2021-04-23 2021-08-17 华为技术有限公司 Energy storage system, balance control method of energy storage system and photovoltaic power generation system
CN113364320A (en) * 2021-06-18 2021-09-07 浙江大学 Boost multi-level inverter circuit and control method thereof
CN113364320B (en) * 2021-06-18 2023-08-01 浙江大学 Boost type multi-level inverter circuit and control method thereof

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