CN103490639A - Flexible distribution transformer based on full flexible control - Google Patents
Flexible distribution transformer based on full flexible control Download PDFInfo
- Publication number
- CN103490639A CN103490639A CN201310449822.3A CN201310449822A CN103490639A CN 103490639 A CN103490639 A CN 103490639A CN 201310449822 A CN201310449822 A CN 201310449822A CN 103490639 A CN103490639 A CN 103490639A
- Authority
- CN
- China
- Prior art keywords
- phase
- bridge
- converter
- controller
- stage unit
- 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
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The invention provides a flexible distribution transformer based on the full flexible control. The transformer comprises a high-voltage stage unit, an isolation stage unit and a low-voltage stage unit, wherein the high-voltage stage unit, the isolation stage unit and the low-voltage stage unit are sequentially connected, the high-voltage stage unit and the isolation stage unit are connected through a direct-current bus, and the isolation stage unit and the low-voltage stage unit are connected through a direct-current bus. According to the flexible distribution transformer based on the full flexible control, the function of a traditional transformer and the function of a DFACTS controller are integrated, the rigid control structure of the traditional transformer is thoroughly changed, and the power distribution network is concisely and flexibly controlled.
Description
Technical field
The invention belongs to flexible distribution technique field, be specifically related to a kind of flexible distribution transformer based on full Flexible Control.
Background technology
Transformer is a kind of AC energy of form to be transformed into to the power equipment of the AC energy of another kind of form.Power transformer is mainly used in realizing electric pressure conversion and electrical isolation, from 19 end of the centurys, by the developing history of existing more than 100 year since inventing, has become at present one of most important component devices of fundamental sum of electric power system.No matter the power transformer of today, be technique, or performance has all reached unprecedented height, but any variation does not occur for the basic function of transformer, operation principle and structure.Yet profound change has occurred with comparing in the past in electric power system, and particularly a series of new characteristics have appearred in electric power system in recent decades, as: electrical network scale expanding day; Distributed generation technology develops rapidly; The electrical network intelligent construction; Nonlinear-load rapid development etc.In electric power system, in the face of under the background of these new challenges, as the electric power system power transformer of basic transformation device, too single function makes its weak point more and more obvious.The various new problem occurred in order to solve electric power system, have to continue to install additional various adjusters, stabilizer, controller and compensator on originally very complicated system, makes electric power system more complicated.If can directly utilize the most basic element of electric power system---power transformer, solve the existing problem of electric power system, so electric power system meeting more succinct, the safety that becomes.
At following intelligent distribution system under new factors influencing demand, the power electronic technology of take will become the core research contents that realizes following intelligent distribution network major function as basic flexible distribution technique DFACTS.To the application study of DFACTS, will change into gradually from this more single purposes of traditional raising quality of power supply be tending towards that several functions is integrated, modularization, unitized, unitized Studies of Comprehensive Application, following distribution critical equipment based on Flexible Control will replace the controller switching equipment of existing machinery formula, electromechanical, realize new " full Flexible Control " Based Intelligent Control pattern.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of flexible distribution transformer based on full Flexible Control, merged the function of traditional transformer and DFACTS controller, thoroughly changed the rigidity control structure of traditional transformer, power distribution network has been controlled more flexibly succinct.
In order to realize the foregoing invention purpose, the present invention takes following technical scheme:
The invention provides a kind of flexible distribution transformer based on full Flexible Control, described transformer comprises hiigh pressure stage unit, isolation level unit and low-pressure stage unit; Described hiigh pressure stage unit, isolation level unit and low-pressure stage unit are connected successively, between described hiigh pressure stage and isolation level unit, all be connected by DC bus between isolation level unit and low-pressure stage unit.
The flexible distribution transformer that described transformer is three-phase four-wire power supply.
Described hiigh pressure stage unit comprises an AC/DC converter, and a described AC/DC converter comprises many level of diode-clamped three phase full bridge rectification Active Front End, controller and auxiliary equipment; Controller produces modulation signal, and the power electronic device main circuit of many level of diode-clamped three phase full bridge rectification Active Front End is controlled; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped three phase full bridge rectification Active Front End is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped three phase full bridge rectification Active Front End are protected, the variable of realizing many level of diode-clamped three phase full bridge rectification Active Front End detects and FEEDBACK CONTROL, makes the clean boot of many level of diode-clamped three phase full bridge rectification Active Front End, shutdown and heat radiation; A described AC/DC converter AC access distribution network line, its DC side is connected with a DC/AC converter DC side of isolation level unit by DC bus.
Described isolation level unit comprises a DC/AC converter, isolating transformer and the 2nd AC/DC converter.
A described DC/AC converter comprises many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is controlled, and input direct-current is to the high-frequency ac square wave; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter are protected, make the clean boot of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, shutdown and heat radiation; A described DC/AC converter DC side is connected with the hiigh pressure stage unit by DC bus, its AC output high-frequency ac square wave, and be connected with the isolating transformer primary side.
The isolating transformer that described isolating transformer is primary side 1 tunnel input, secondary side 3 tunnel outputs; Primary side is connected with a DC/AC converter AC, and secondary side 3 tunnels outputs are connected with the AC of 3 single-phase H bridge high-frequency resonant rectifiers of the 2nd AC/DC converter respectively.
Described isolating transformer is intermediate frequency isolating transformer or high-frequency isolation transformer.
Described the 2nd AC/DC converter comprises 3 single-phase H bridge high-frequency resonant rectifiers, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge high-frequency resonant rectifiers is controlled, and realizes the conversion of input high frequency square wave AC-to DC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge high-frequency resonant rectifier is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge high-frequency resonant rectifier are protected, make the clean boot of single-phase H bridge high-frequency resonant rectifier, shutdown and heat radiation; 3 single-phase H bridge high-frequency resonant rectifiers of described the 2nd AC/DC converter AC are connected with the secondary side 3 tunnel outputs of isolating transformer respectively, and DC side 3 tunnel outputs are connected with 3 single-phase H bridge inverter DC side of the 2nd DC/AC converter of low-pressure stage unit by DC bus respectively.
Described low-pressure stage unit comprises the 2nd DC/AC converter, and described the 2nd DC/AC converter comprises 3 single-phase H bridge inverters, controller, 3 LC filters and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge inverters is controlled, and realizes the conversion of input direct-current to industrial frequency AC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge inverter is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge inverter are protected, the variable of realizing single-phase H bridge inverter detects and FEEDBACK CONTROL, makes the clean boot of single-phase H bridge inverter, shutdown and heat radiation; The DC side of 3 single-phase H bridge inverters is connected with the 2nd AC/DC converter DC side of isolation level by DC bus respectively, and AC is connected with 3 LC filters respectively; The output of the 2nd DC/AC converter is pressed YN and is connect, and forms three-phase and four-line output.
Compared with prior art, beneficial effect of the present invention is:
1. merged the function of traditional transformer and DFACTS controller, thoroughly changed the rigidity control structure of traditional transformer, power distribution network has been controlled more flexibly succinct;
2. many level topological structure of hiigh pressure stage and isolation level unit has been proposed, can be applicable to power distribution network high-power application characteristic, and possess the advantage that facilitates the dilatation of many level and harmonic wave to draw up, and can reduce the semiconductor switch number and reach the advantage of raising the efficiency, reducing costs;
3. propose three grades of controls for many level DFACTS transformer, realized the function that traditional transformer and electric energy quality controller merge.
The accompanying drawing explanation
Fig. 1 is based on the flexible distribution transformer structured flowchart of full Flexible Control;
Fig. 2 is the topology diagram of three-phase and four-line DFACTS transformer;
Fig. 3 is DC voltage control and the AC current control flow chart in the hiigh pressure stage unit;
Fig. 4 is low-pressure stage unit controls flow chart;
Fig. 5 is active power and reactive power change curve in the embodiment of the present invention;
Fig. 6 connects the DC bus-bar voltage oscillogram of hiigh pressure stage unit in the embodiment of the present invention;
Fig. 7 is embodiment of the present invention mesolow level unit output voltage waveform;
Fig. 8 is embodiment of the present invention mesolow level unit output current wave figure;
Fig. 9 is embodiment of the present invention mesolow level unit C phase voltage and current waveform figure.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, the invention provides a kind of flexible distribution transformer based on full Flexible Control, described transformer comprises hiigh pressure stage unit, isolation level unit and low-pressure stage unit; Described hiigh pressure stage unit, isolation level unit and low-pressure stage unit are connected successively, between described hiigh pressure stage and isolation level unit, all be connected by DC bus between isolation level unit and low-pressure stage unit.
The flexible distribution transformer that described transformer is three-phase four-wire power supply.
As Fig. 2 and Fig. 3, described hiigh pressure stage unit comprises an AC/DC converter, and a described AC/DC converter comprises many level of diode-clamped three phase full bridge rectification Active Front End, controller and auxiliary equipment; Controller produces modulation signal, power electronic device main circuit to many level of diode-clamped three phase full bridge rectification Active Front End is controlled, realize that output dc voltage is constant, and ac-side current is sinusoidal and power factor is adjustable flexibly, and can realizes four quadrant running; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped three phase full bridge rectification Active Front End is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped three phase full bridge rectification Active Front End are protected, the variable of realizing many level of diode-clamped three phase full bridge rectification Active Front End detects and FEEDBACK CONTROL, makes the clean boot of many level of diode-clamped three phase full bridge rectification Active Front End, shutdown and heat radiation; A described AC/DC converter AC access distribution network line, its DC side is connected with a DC/AC converter DC side of isolation level unit by DC bus.
Described isolation level unit comprises a DC/AC converter, isolating transformer and the 2nd AC/DC converter.
A described DC/AC converter comprises many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is controlled, and input direct-current is to the high-frequency ac square wave; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter are protected, make the clean boot of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, shutdown and heat radiation; A described DC/AC converter DC side is connected with the hiigh pressure stage unit by DC bus, its AC output high-frequency ac square wave, and be connected with the isolating transformer primary side.
The isolating transformer that described isolating transformer is primary side 1 tunnel input, secondary side 3 tunnel outputs; Primary side is connected with a DC/AC converter AC, and secondary side 3 tunnels outputs are connected with the AC of 3 single-phase H bridge high-frequency resonant rectifiers of the 2nd AC/DC converter respectively.
Described isolating transformer is intermediate frequency isolating transformer or high-frequency isolation transformer.
Described the 2nd AC/DC converter comprises 3 single-phase H bridge high-frequency resonant rectifiers, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge high-frequency resonant rectifiers is controlled, and realizes the conversion of input high frequency square wave AC-to DC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge high-frequency resonant rectifier is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge high-frequency resonant rectifier are protected, make the clean boot of single-phase H bridge high-frequency resonant rectifier, shutdown and heat radiation; 3 single-phase H bridge high-frequency resonant rectifiers of described the 2nd AC/DC converter AC are connected with the secondary side 3 tunnel outputs of isolating transformer respectively, and DC side 3 tunnel outputs are connected with 3 single-phase H bridge inverter DC side of the 2nd DC/AC converter of low-pressure stage unit by DC bus respectively.
As Fig. 2 and Fig. 4, described low-pressure stage unit comprises the 2nd DC/AC converter, and described the 2nd DC/AC converter comprises 3 single-phase H bridge inverters, controller, 3 LC filters and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge inverters is controlled, and realizes the conversion of input direct-current to industrial frequency AC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge inverter is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge inverter are protected, the variable of realizing single-phase H bridge inverter detects and FEEDBACK CONTROL, makes the clean boot of single-phase H bridge inverter, shutdown and heat radiation; The DC side of 3 single-phase H bridge inverters is connected with the 2nd AC/DC converter DC side of isolation level by DC bus respectively, and AC is connected with 3 LC filters respectively; The output of the 2nd DC/AC converter is pressed YN and is connect, and forms three-phase and four-line output.
DFACTS device for transformer total capacity 50KVA, grade of rated voltage is 550V/220V, drops at full capacity, power factor 0.8 lags behind and moves, and within 0.13 second, only at c, drops into mutually the 5KW load.
Its operation form is as shown in Fig. 5-8.In Fig. 5, device is 0.8 hysteresis in the power-factor of load, full-load run, after stable, reactive power remains at 0 left and right, even in the situation that occur that three-phase imbalance and excess load active power and reactive power remain stable, still can realize the operation of net side unity power factor, wherein solid line means active power, and dotted line means reactive power; Fig. 6 is the hiigh pressure stage DC bus-bar voltage, remains that after stable operation DC bus-bar voltage 1.2KV is constant.Fig. 7 and Fig. 8 are respectively device low-pressure stage output voltage and current three-phase waveform, Fig. 9 is device low-pressure stage C phase voltage current waveform figure, dotted line means electric current, solid line means voltage, be that all to maintain 220V at low-pressure side output voltage fully loaded and that this device occurs can guaranteeing in the three-phase imbalance situation constant, and there is good sinusoidal degree and lower total percent harmonic distortion.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. the flexible distribution transformer based on full Flexible Control, it is characterized in that: described transformer comprises hiigh pressure stage unit, isolation level unit and low-pressure stage unit; Described hiigh pressure stage unit, isolation level unit and low-pressure stage unit are connected successively, between described hiigh pressure stage and isolation level unit, all be connected by DC bus between isolation level unit and low-pressure stage unit.
2. the flexible distribution transformer based on full Flexible Control according to claim 1, is characterized in that: the flexible distribution transformer that described transformer is three-phase four-wire power supply.
3. the flexible distribution transformer based on full Flexible Control according to claim 1, it is characterized in that: described hiigh pressure stage unit comprises an AC/DC converter, and a described AC/DC converter comprises many level of diode-clamped three phase full bridge rectification Active Front End, controller and auxiliary equipment; Controller produces modulation signal, and the power electronic device main circuit of many level of diode-clamped three phase full bridge rectification Active Front End is controlled; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped three phase full bridge rectification Active Front End is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped three phase full bridge rectification Active Front End are protected, the variable of realizing many level of diode-clamped three phase full bridge rectification Active Front End detects and FEEDBACK CONTROL, makes the clean boot of many level of diode-clamped three phase full bridge rectification Active Front End, shutdown and heat radiation; A described AC/DC converter AC access distribution network line, its DC side is connected with a DC/AC converter DC side of isolation level unit by DC bus.
4. the flexible distribution transformer based on full Flexible Control according to claim 1, it is characterized in that: described isolation level unit comprises a DC/AC converter, isolating transformer and the 2nd AC/DC converter.
5. the flexible distribution transformer based on full Flexible Control according to claim 4, it is characterized in that: a described DC/AC converter comprises many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is controlled, and input direct-current is to the high-frequency ac square wave; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter is driven, and excess temperature, overvoltage and the overcurrent of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter are protected, make the clean boot of many level of diode-clamped single-phase semi-bridge high-frequency resonant inverter, shutdown and heat radiation; A described DC/AC converter DC side is connected with the hiigh pressure stage unit by DC bus, its AC output high-frequency ac square wave, and be connected with the isolating transformer primary side.
6. the flexible distribution transformer based on full Flexible Control according to claim 4, is characterized in that: the isolating transformer that described isolating transformer is primary side 1 tunnel input, secondary side 3 tunnel outputs; Primary side is connected with a DC/AC converter AC, and secondary side 3 tunnels outputs are connected with the AC of 3 single-phase H bridge high-frequency resonant rectifiers of the 2nd AC/DC converter respectively.
7. the flexible distribution transformer based on full Flexible Control according to claim 6, it is characterized in that: described isolating transformer is intermediate frequency isolating transformer or high-frequency isolation transformer.
8. the flexible distribution transformer based on full Flexible Control according to claim 4, it is characterized in that: described the 2nd AC/DC converter comprises 3 single-phase H bridge high-frequency resonant rectifiers, controller and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge high-frequency resonant rectifiers is controlled, and realizes the conversion of input high frequency square wave AC-to DC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge high-frequency resonant rectifier is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge high-frequency resonant rectifier are protected, make the clean boot of single-phase H bridge high-frequency resonant rectifier, shutdown and heat radiation; 3 single-phase H bridge high-frequency resonant rectifiers of described the 2nd AC/DC converter AC are connected with the secondary side 3 tunnel outputs of isolating transformer respectively, and DC side 3 tunnel outputs are connected with 3 single-phase H bridge inverter DC side of the 2nd DC/AC converter of low-pressure stage unit by DC bus respectively.
9. the flexible distribution transformer based on full Flexible Control according to claim 1, it is characterized in that: described low-pressure stage unit comprises the 2nd DC/AC converter, and described the 2nd DC/AC converter comprises 3 single-phase H bridge inverters, controller, 3 LC filters and auxiliary equipment; Controller produces modulation signal the power electronic device main circuit of 3 single-phase H bridge inverters is controlled, and realizes the conversion of input direct-current to industrial frequency AC; Auxiliary equipment receives the modulation signal of controller and produces and drives signal, break-make to the power electronic device of single-phase H bridge inverter is driven, and excess temperature, overvoltage and the overcurrent of single-phase H bridge inverter are protected, the variable of realizing single-phase H bridge inverter detects and FEEDBACK CONTROL, makes the clean boot of single-phase H bridge inverter, shutdown and heat radiation; The DC side of 3 single-phase H bridge inverters is connected with the 2nd AC/DC converter DC side of isolation level by DC bus respectively, and AC is connected with 3 LC filters respectively; The output of the 2nd DC/AC converter is pressed YN and is connect, and forms three-phase and four-line output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449822.3A CN103490639A (en) | 2013-09-27 | 2013-09-27 | Flexible distribution transformer based on full flexible control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449822.3A CN103490639A (en) | 2013-09-27 | 2013-09-27 | Flexible distribution transformer based on full flexible control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103490639A true CN103490639A (en) | 2014-01-01 |
Family
ID=49830651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310449822.3A Pending CN103490639A (en) | 2013-09-27 | 2013-09-27 | Flexible distribution transformer based on full flexible control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103490639A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734187A (en) * | 2015-03-12 | 2015-06-24 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
| CN104767394A (en) * | 2015-04-16 | 2015-07-08 | 西南交通大学 | Single-phase half-bridge multi-level AC-DC-AC convertor |
| CN106660458A (en) * | 2014-08-04 | 2017-05-10 | 罗伯特·博世有限公司 | Energy supply system for a motor vehicle with an electric or hybrid drive |
| CN106992546A (en) * | 2017-05-10 | 2017-07-28 | 三峡大学 | A kind of optimal energy allocation system of flexible direct current power distribution network |
| CN110086355A (en) * | 2019-04-29 | 2019-08-02 | 西安交通大学 | A kind of high frequency control offset-type controllable AC distribution transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080304300A1 (en) * | 2007-06-06 | 2008-12-11 | General Electric Company | Power conversion system with galvanically isolated high frequency link |
| CN101572495A (en) * | 2009-03-10 | 2009-11-04 | 东南大学 | Multifunctional power electric transformer |
| CN101795080A (en) * | 2010-03-03 | 2010-08-04 | 中国科学院电工研究所 | Three-phase power electronics transformer for power distribution |
| US20110007534A1 (en) * | 2009-07-10 | 2011-01-13 | Regents Of The University Of Minnesota | Soft switching power electronic transformer |
-
2013
- 2013-09-27 CN CN201310449822.3A patent/CN103490639A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080304300A1 (en) * | 2007-06-06 | 2008-12-11 | General Electric Company | Power conversion system with galvanically isolated high frequency link |
| CN101572495A (en) * | 2009-03-10 | 2009-11-04 | 东南大学 | Multifunctional power electric transformer |
| US20110007534A1 (en) * | 2009-07-10 | 2011-01-13 | Regents Of The University Of Minnesota | Soft switching power electronic transformer |
| CN101795080A (en) * | 2010-03-03 | 2010-08-04 | 中国科学院电工研究所 | Three-phase power electronics transformer for power distribution |
Non-Patent Citations (4)
| Title |
|---|
| 何金平: "自平衡电子电力变压器试验系统的研制", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑 》, no. 5, 15 May 2009 (2009-05-15) * |
| 凌晨等: "配电网中的电力电子变压器研究", 《电力系统保护与控制》, vol. 40, no. 2, 16 January 2012 (2012-01-16), pages 34 - 39 * |
| 刘海波: "电子电力变压器控制策略研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》, no. 11, 15 November 2009 (2009-11-15), pages 14 - 35 * |
| 曹解围: "电力电子变压器及其在输电系统中的应用", 《中国优秀硕士论文全文数据库 工程科技Ⅱ辑》, 15 May 2006 (2006-05-15) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106660458A (en) * | 2014-08-04 | 2017-05-10 | 罗伯特·博世有限公司 | Energy supply system for a motor vehicle with an electric or hybrid drive |
| CN104734187A (en) * | 2015-03-12 | 2015-06-24 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
| CN104734187B (en) * | 2015-03-12 | 2017-03-22 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
| CN104767394A (en) * | 2015-04-16 | 2015-07-08 | 西南交通大学 | Single-phase half-bridge multi-level AC-DC-AC convertor |
| CN106992546A (en) * | 2017-05-10 | 2017-07-28 | 三峡大学 | A kind of optimal energy allocation system of flexible direct current power distribution network |
| CN110086355A (en) * | 2019-04-29 | 2019-08-02 | 西安交通大学 | A kind of high frequency control offset-type controllable AC distribution transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102222937B (en) | Photovoltaic grid-connected inverter and grid-connected control method thereof | |
| CN204967652U (en) | Subway energy feedback device | |
| CN101795080A (en) | Three-phase power electronics transformer for power distribution | |
| Iman-Eini et al. | Analysis and design of power electronic transformer for medium voltage levels | |
| CN103490419A (en) | Flexible alternating-current direct-current hybrid power supply system of power distribution network | |
| CN202488205U (en) | Novel serial-parallel conversion-type UPS | |
| CN103427425A (en) | Coordinated control device and method for MMC (modular multilevel converter) type unified power quality conditioner | |
| CN103490639A (en) | Flexible distribution transformer based on full flexible control | |
| CN107370392A (en) | Towards the electric power electric transformer of mesohigh intelligent distribution network | |
| CN202353232U (en) | High-voltage cascaded inverter power unit grid-connection feedback device | |
| CN103475032B (en) | A kind of intelligent adapted electricity flexible control system | |
| CN201839005U (en) | Active power filter with hybrid structure | |
| CN104393591A (en) | Power supply system | |
| CN104795981A (en) | Current ripple active restraining method of DC-grid-connection-operation hybrid micro-grid bidirectional transducers | |
| CN102638047A (en) | Three-phase unified power quality control device with bypass switches | |
| CN202930956U (en) | Unified power flow controller used in unbalanced system | |
| CN101252283B (en) | Medium voltage system inductive dynamic reactive-load adjusting device | |
| CN102231524A (en) | Fully-controlled-converter-based active power filtering method | |
| CN201323471Y (en) | Voltage quality comprehensive adjusting device with differentiation configuration structure | |
| CN108683353A (en) | Substation's energy-saving multifunctional integration charge and discharge device and control method | |
| CN209072082U (en) | A kind of power distribution network transformer electric energy quality compensating device | |
| CN204835554U (en) | Device is synthesized to frequency conversion and electric energy quality | |
| CN204407914U (en) | For the energy storage type electric energy regulator of wind generator system | |
| CN201994857U (en) | Novel testing power supply of transformer | |
| CN203278261U (en) | Photovoltaic power generation system and photovoltaic inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140101 |