CN106099948B - A kind of power electronics is flexible coupling switch topology and its control method - Google Patents
A kind of power electronics is flexible coupling switch topology and its control method Download PDFInfo
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- CN106099948B CN106099948B CN201610758866.8A CN201610758866A CN106099948B CN 106099948 B CN106099948 B CN 106099948B CN 201610758866 A CN201610758866 A CN 201610758866A CN 106099948 B CN106099948 B CN 106099948B
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- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims 1
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Claims (2)
- The switch topology dc bus stable control method 1. a kind of power electronics is flexible coupling, the power electronics switch that is flexible coupling are opened up The power network A and B for connecting two free voltage grades are flutterred, the power electronics is flexible coupling in switch topology to be included successively:Every From transformer 1, switch 1, wave filter 1, power electronics be flexible coupling switch, wave filter 2, switch 2, isolating transformer 2;The electric power Electronics is flexible coupling to switch to be made up of converter 1 and converter 2, and the DC side of two converters, which links together, forms direct current mother Line, the AC of converter 1 are connected with wave filter 1, and the AC of converter 2 is connected with wave filter 2, the both positive and negative polarity of dc bus Between be connected with DC support electric capacity;Characterized in that, DC bus-bar voltage set-point Udc* is subtracted to the reality currently measured Value Udc, obtained voltage difference is multiplied by 1/2 output as current regulating signal after being sent into pi regulator calculating processing, by described in Current instantaneous feedback electric current iaf, the ibf of converter 1 and 2 is individually subtracted in current regulating signal, and obtained current differential is sent respectively Enter another pi regulator, just all contain active current, and then compensation system in the instruction current signal of such two converter Compensation electric current in also contain active current so that the DC side of compensation system and AC positive energy exchange, by direct current Busbar voltage maintains set-point.
- The switch topology active balance control method 2. a kind of power electronics is flexible coupling, the power electronics be flexible coupling switch topology use In the power network A and B that connect two free voltage grades, the power electronics is flexible coupling in switch topology to be included successively:Isolation becomes Depressor 1, switch 1, wave filter 1, power electronics be flexible coupling switch, wave filter 2, switch 2, isolating transformer 2;The power electronics The switch that is flexible coupling is made up of converter 1 and converter 2, and the DC side of two converters, which links together, forms dc bus, becomes The AC of parallel operation 1 is connected with wave filter 1, and the AC of converter 2 is connected with wave filter 2, between the both positive and negative polarity of dc bus It is connected with DC support electric capacity;Characterized in that, DC bus-bar voltage set-point Udc* is subtracted to the actual value currently measured Udc, obtained voltage difference export after PI controllers calculating processing;Power network A and B electric current are utilized to power network A and B voltage Lock mutually respectively and the active component of power network A and B electric current is isolated after LPF LPF, the power network A's and B electric currents has After the output summation of work(component and above-mentioned PI controllers, 1/2 is multiplied by, converter instruction current iaref and ibref are obtained, by institute Current instruction current iaref and ibref is individually subtracted in the power network current for stating power network A and B, and obtained current differential subtracts respectively again Feedback current iaf, ibf of converter 1 and converter 2 are removed, obtained difference is sent into another PI controllers, another PI controls The output of device relatively makees difference with carrier wave ratio, by difference adjusting the output of converter 1 and converter 2;To realize two adjacent power networks Active balance between load, the method divided again after two electric network active electric currents are added is taken, afterwards to two phase loads Compensate respectively.
Priority Applications (1)
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CN201610758866.8A CN106099948B (en) | 2016-08-30 | 2016-08-30 | A kind of power electronics is flexible coupling switch topology and its control method |
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CN201610758866.8A CN106099948B (en) | 2016-08-30 | 2016-08-30 | A kind of power electronics is flexible coupling switch topology and its control method |
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CN106099948A CN106099948A (en) | 2016-11-09 |
CN106099948B true CN106099948B (en) | 2018-04-03 |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106655805A (en) * | 2017-03-10 | 2017-05-10 | 贵州电网有限责任公司电力科学研究院 | MMC-based multi-port hybrid power electronic transformer and control method thereof |
CN107863893A (en) * | 2017-12-14 | 2018-03-30 | 中机国际工程设计研究院有限责任公司 | The level rectifying system of midpoint self-balancing three |
CN108183486B (en) * | 2018-01-17 | 2020-08-21 | 中国科学院电工研究所 | Flexible multi-state switch and control method thereof |
CN113640693A (en) * | 2020-04-24 | 2021-11-12 | 国网江苏省电力有限公司电力科学研究院 | Power electronic transformer operation system and control method |
CN113726137B (en) * | 2020-05-26 | 2023-11-03 | 台达电子企业管理(上海)有限公司 | conversion device |
CN118017808B (en) * | 2024-04-08 | 2024-07-16 | 深圳市恒运昌真空技术股份有限公司 | Cascaded solid-state transformer and power balance control method |
Citations (6)
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CN202178710U (en) * | 2011-06-10 | 2012-03-28 | 浙江大学 | Back-to-back multi-level alternating current-direct current-alternating current (AC-DC-AC) conversion circuit for hybrid clamp |
CN102593822A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Frequency converter dynamic voltage compensation device with low voltage ride through capability |
CN203883492U (en) * | 2014-05-29 | 2014-10-15 | 国家电网公司 | AC-DC hybrid modularized microgrid networking structure based on hybrid energy storage |
CN204835939U (en) * | 2015-04-06 | 2015-12-02 | 北京首钢国际工程技术有限公司 | 1140V converter of using in steel rolling exchanges main drive system |
CN205105109U (en) * | 2015-10-29 | 2016-03-23 | 张家港荣源电气有限公司 | Based on high -power bank of three level topology electricity variable frequency power supply device |
CN105703380A (en) * | 2016-04-19 | 2016-06-22 | 北京英博电气股份有限公司 | Low voltage control device for rural power grid |
-
2016
- 2016-08-30 CN CN201610758866.8A patent/CN106099948B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202178710U (en) * | 2011-06-10 | 2012-03-28 | 浙江大学 | Back-to-back multi-level alternating current-direct current-alternating current (AC-DC-AC) conversion circuit for hybrid clamp |
CN102593822A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Frequency converter dynamic voltage compensation device with low voltage ride through capability |
CN203883492U (en) * | 2014-05-29 | 2014-10-15 | 国家电网公司 | AC-DC hybrid modularized microgrid networking structure based on hybrid energy storage |
CN204835939U (en) * | 2015-04-06 | 2015-12-02 | 北京首钢国际工程技术有限公司 | 1140V converter of using in steel rolling exchanges main drive system |
CN205105109U (en) * | 2015-10-29 | 2016-03-23 | 张家港荣源电气有限公司 | Based on high -power bank of three level topology electricity variable frequency power supply device |
CN105703380A (en) * | 2016-04-19 | 2016-06-22 | 北京英博电气股份有限公司 | Low voltage control device for rural power grid |
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Effective date of registration: 20161228 Address after: 450052 Songshan, Zhengzhou, Henan District No. 27 South Road, No. 85 Applicant after: Electric Power Research Institute, State Grid Henan Electric Power Company Applicant after: Electrical Engineering Inst. CAS Applicant after: Henan Enpai Electric Power Technology Co., Ltd. Applicant after: Henan En Pai high-tech Group Co.,Ltd Applicant after: State Power Networks Co Address before: 450006 Songshan South Road, Henan, No. 27 Zhengzhou Road, No. 85 Applicant before: Electric Power Research Institute, State Grid Henan Electric Power Company Applicant before: Electrical Engineering Inst. CAS Applicant before: Henan Enpai Electric Power Technology Co., Ltd. Applicant before: State Power Networks Co |
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