CN103683857B - The direct current draw-out power supply of IEGT power model - Google Patents
The direct current draw-out power supply of IEGT power model Download PDFInfo
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Abstract
The present invention relates to a kind of direct current draw-out power supply of IEGT power model of high-power power electronic converter field, main circuit comprises filter circuit, non-isolated anti exciting converter, isolation push-pull converter, the high voltage direct current electric energy of input is after filtering after circuit filtering, electric power signal converts through the first order through non-isolated anti exciting converter, bus high pressure converted to the signal of telecommunication of DC400V and process after filtering, the signal of telecommunication after filtering process carries out second level isolated variable process through isolation push-pull converter again, eventually pass the full-wave rectification of rectification circuit (Fig. 4), enable the signal of telecommunication of the output DC15V of high-order draw-out power supply stability and safety.This draw-out power supply can realize in the scope of DC input voitage 300Vdc ~ 3700Vdc, get energy, and naturally cool, the work for IEGT power model provides control power supply, and work that can be safe and reliable under complex electromagnetic fields environment.
Description
Technical field
The present invention relates to a kind of direct current draw-out power supply of IEGT power model of high-power power electronic converter field.
Background technology
The basic composition unit of high-power many level cascade converter is power model, is composed in series by power model.The topology of power model is all DC/AC scheme substantially, namely realizes DC(direct current) and AC(exchange) conversion between energy.DC side adopts capacitor to carry out energy storage usually.
The core component of power model is large power all-controlled transistor, and that commonly uses at present comprises IGBT, IEGT and StakPak etc.Based on IGBT power model on domestic market, IEGT power model only has a supplier, and StakPak power model does not also have supplier at present.
Each power model has oneself control device and protective device, these devices all to need power supply, and how getting the power supply that can come needed for generator is difficult point and a key point.Current getting can mode comprise: DC side gets energy and energy is got on ground.
DC side gets energy: namely obtain energy from DC energy storage element (bus large bulk capacitance); adopt advanced multitube string-and cascade inverse-excitation type DC-DC converter technique; realize high-low pressure isolated variable; in addition complete reliable testing circuit, feedback circuit, protective circuit again, final stability and safety ground provides constant current source for the control protective unit of power model.
Ground get can: namely with distribution system (380V) in equipment station or in factory for the energy, by transformation of electrical energy and high_voltage isolation, for the control protective unit of power model provides power supply.
Get and can the pluses and minuses of mode compare for above two kinds: direct current get can advantage be application in superhigh pressure field, such as flexible direct-current transmission converter, voltage is easily more than 100kV, in such system, it can be unpractical for getting from ground, technical difficulty is large and cost is high, and it can be only way that direct current is got.In the system of below 35kV, both ground can have been adopted to get can, also direct current can be adopted to get energy, and adopting ground to get can have a benefit to be allow current transformer under any circumstance to start, and adopts direct current to get when can then need current transformer to be connected with electrical network and just can start working.
At present, get for two kinds and mode all can achieve at IGBT power model and come into operation, but direct current is got and often can be no more than 1700V by input voltage, reason usually selects 3300V and following IGBT for cost consideration manufacturer.And for IEGT power model, before the present invention occurs, only achieve ground and get energy.
Summary of the invention
The object of this invention is to provide a kind of direct current draw-out power supply of IEGT power model, this draw-out power supply can realize in the scope of DC input voitage 300Vdc ~ 3700Vdc, get energy, naturally cool, work for IEGT power model provides control power supply, and work that can be safe and reliable under complex electromagnetic fields environment.
For achieving the above object, the present invention is achieved through the following technical solutions:
The direct current draw-out power supply of IEGT power model, be set up at space structure cloth, direct current energy taking device is between IEGT valve string and power model control board, the input of direct current energy taking device is connected with the IEGT valve string fin as direct electrified body, IEGT valve string fin is positioned at the outside of IEGT valve string, and IEGT valve string fin is connected with DC capacitor by connecting busbar; Direct voltage sampling plate and IEGT drive plate are arranged between direct current draw-out power supply and IEGT valve string;
The main circuit of direct current draw-out power supply comprises filter circuit, non-isolated anti exciting converter, isolation push-pull converter, filter circuit is made up of common mode inductance, resistance, electric capacity, common mode inductance is respectively equipped with at positive and negative two inputs of high voltage input terminal, be connected to the common mode inductance two ends of the positive and negative input of high pressure respectively by a string all pressures string be made up of resistor coupled in parallel electric capacity, form filter circuit; Non-isolated anti exciting converter is made up of multiple power circuit cascade, the input series connection of each power circuit, and output is in parallel, and the input of the power circuit be connected in series is connected with filter circuit output; The output of non-isolated anti exciting converter is connected with the input of isolation push-pull converter.
Compared with prior art, the invention has the beneficial effects as follows:
The direct voltage of 1.MMC-HVDC converter is usually all higher, at least at more than 100kV, is unpractical for energy is got on ground; Power model designs based on 4500V-IEGT, its high voltage bearing characteristic also will ask energy taking device should possess the ability of stable operation under high-pressure situations equally, draw-out power supply of the present invention can realize in the scope of DC input voitage 300Vdc ~ 3700Vdc, get energy, naturally cool, work for IEGT power model provides control power supply, and work that can be safe and reliable under complex electromagnetic fields environment.
2. due to the raising of single power model fan-out capability, needed for same electric pressure converter equipment, module number will greatly reduce, thus while cost-saving, also make it possess more space-saving advantage.
3. the occasions such as direct current draw-out power supply of the present invention may be used for the power model based on 4500V-IEGT, and may be used for MMC-HVDC converter based on the power model of 4500V-IEGT, high-voltage static var generator (such as 35kV-STATCOM).
4. the present invention has filled up the blank that IEGT power model direct current gets energy, for the application of high-power many level cascade converter provides new space and market, especially flexible direct-current transmission field, the input voltage maximum of direct current draw-out power supply of the present invention reaches 3700V, and getting considerably beyond IGBT power model direct current can input voltage.
Accompanying drawing explanation
Fig. 1 is structural front view of the present invention.
Fig. 2 is structure side view of the present invention.
Fig. 3 is electrical structure block diagram of the present invention.
Fig. 4 is electrical schematic diagram of the present invention.
Fig. 5 is power circuit cascade schematic diagram.
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
See Fig. 1, Fig. 2, the direct current draw-out power supply of IEGT power model, be set up at space structure cloth, direct current energy taking device 1 is between IEGT valve string 3 and power model control board 6, the input of direct current energy taking device 1 is connected with the IEGT valve string fin 4 as direct electrified body, IEGT valve string fin 4 is positioned at the outside of IEGT valve string 3, and IEGT valve string fin 4 is connected with DC capacitor 5 by connection busbar 7 and DC capacitor terminal 8; Direct voltage sampling plate and IEGT drive plate 2 are arranged between direct current energy taking device 1 and IEGT valve string 3.
See Fig. 3, Fig. 4, Fig. 5, the main circuit of direct current draw-out power supply comprises filter circuit, non-isolated anti exciting converter, isolation push-pull converter, filter circuit is made up of common mode inductance, resistance, electric capacity, common mode inductance is respectively equipped with at positive and negative two inputs of high voltage input terminal, be connected to the common mode inductance two ends of the positive and negative input of high pressure respectively by a string all pressures string be made up of resistor coupled in parallel electric capacity, form filter circuit.Non-isolated anti exciting converter is made up of multiple power circuit cascade, the input series connection of each power circuit, and output is in parallel, and the input of the power circuit be connected in series is connected with filter circuit output; The output of non-isolated anti exciting converter is connected with the input of isolation push-pull converter.The output of isolation push-pull converter is connected with rectification circuit.Described power circuit is made up of high frequency energy-storage transformer, LC filter, diode, output filter capacitor, switching tube, isolation push-pull converter is made up of switching tube, transformer, be provided with isolation accessory power supply at the input of isolation push-pull converter, be provided with fault collection circuit at the output of isolation push-pull converter.
The course of work of the direct current draw-out power supply of IEGT power model is: as shown in Figure 3, the high voltage direct current electric energy of input is after filtering after circuit filtering, protect and control circuit to input overvoltage/undervoltage signal transmission by start-up circuit, the protection of input overvoltage/undervoltage and control circuit make power supply in running order, electric power signal converts through the first order through non-isolated anti exciting converter, bus high pressure converted to the signal of telecommunication of DC400V and process after filtering, the signal of telecommunication after filtering process carries out second level isolated variable process through isolation push-pull converter again, eventually pass the full-wave rectification of rectification circuit (Fig. 4), enable the signal of telecommunication of the output DC15V of high-order draw-out power supply stability and safety.
Direct current of the present invention is got and can be got energy by technique device in the scope of DC input voitage 300Vdc ~ 3700Vdc, and naturally cool, the work for IEGT power model provides control power supply, and work that can be safe and reliable under complex electromagnetic fields environment.
Technological difficulties of the present invention are:
1. direct current draw-out power supply design
Under the prerequisite of clear and definite parameter request, how to design satisfactory direct current draw-out power supply, difficult point comprises: the input voltage range (300Vdc ~ 3700Vdc) of non-constant width, volume is little, and reliability is high.
2. integrated DC draw-out power supply in IEGT power model
Under high pressure, strong electromagnetic interference environment, how direct current draw-out power supply is integrated in IEGT power model system, works in coordination and co-ordination with other parts.
Concrete solution of the present invention is:
1. locus.
When installing direct current energy taking device, itself and power receiving equipment should be avoided apart from oversize, cause its EMI characteristic to decline, also will take into account it and put and do not make power model volume too large.So direct current energy taking device 1 is put between IEGT valve string and power model control board 6 by the present invention, and direct voltage sampling plate and IEGT drive plate 2 are arranged between direct current energy taking device 1 and IEGT valve string 3.
First, when valve design string structure, can problem with regard to considering getting of device, herein, positive and negative for electric capacity two electrodes are connected to IEGT valve string fin 4 by connecting busbar 7, the input of direct current energy taking device 1 is connected with IEGT valve string fin 4 again, and IEGT valve string fin 4 becomes the direct electrified body be connected with DC capacitor, and direct current energy taking device 1 gets energy from here.This method substantially reduces energy taking device and gets energy path, has safe and reliable advantage.
Secondly, direct voltage sampling plate and IEGT drive plate 2 etc. are arranged in around direct current energy taking device by electric control unit, the length of connection cable can be shortened so as far as possible, reduce issuable interference.
Finally, direct current energy taking device with particulate metal material package, and is equipped with specific filter, to shield the electromagnetic interference from module itself and surrounding.
2. electrical characteristic
Due to the requirement of application, the excursion based on the direct voltage of power model when actual motion of 4500V-IEGT is 0 ~ 3500Vdc, higher, so, apply direct current get can technology time, detailed analysis to be done to electricabsorption agent.
Start/stop: when whole set equipment networks and shut down; direct current is got and can will be experienced the handoff procedure of closing and starting by equipment; the capacitance voltage span of DC side is also very large; so; valve section (certain quantity power model is in series) all can press charging; energy taking device can steadily start and stop, are vital.
Run: complete machine is in running, and DC capacitor voltage fluctuation is comparatively large, can produce a large amount of differential mode interference, so will ask for energy equipment while bearing electromagnetic interference, output voltage also can keep stable.
Energy taking device, as an important composition of IEGT power model, has very high requirement to its characteristic such as high pressure resistant, safe.The present invention makes innovation research to energy taking device, design improvement from topological structure, all several aspect such as pressure and power conversion, and the research and development of final finishing device and application.
1) topological structure
1. scheme: energy taking device of the present invention adopts the mode of power circuit cascade, input is connected, and output is in parallel, and concrete electric connecting mode is with reference to shown in Fig. 4, Fig. 5.
Input high pressure after the equalizing capacitance of multiple series connection, then receives the switching tube of each power circuit respectively.As shown in Figure 4, Figure 5, at the two ends of common mode inductance respectively by a string all pressures string be made up of large valued resistor shunt capacitance.Switching tube now, it is 1/6 that 1/N(when voltage stress is single switching transistor is such as connected in series 6 switching tubes).Heat distribution simultaneously also can be relatively average, is relatively applicable to being applied in the power environment of high input voltage.
2. parts selection: in order to reach the high voltage bearing requirement of energy taking device, every switch tube voltage stress that the design chooses is the MOSFET of 1200V.
2) voltage-sharing
1. producing cause: the inconsistent of series connection MOSFET drive singal causes all pressing bad main cause, drives the difference of time of delay can cause opening on slower device and produce due to voltage spikes, and higher quiescent voltage, makes each step voltage uneven.In addition, cabling stray inductance and the absorbing circuit characteristic of drive circuit are different, different MOSFET lead-in inductances is different, on state characteristic also just has very big-difference, the voltage rise slope dV/dt of MOSFET shutdown moment is relevant with the value of Absorption Capacitance in addition, there is considerable influence the aspects such as the factor of the comparatively large and operational environment of the error of Absorption Capacitance all switch tube conducting, therefore the dV/dt of the MOSFET of each series connection also can be different, and the MOSFET two ends that Absorption Capacitance is little can produce larger due to voltage spikes.
2. solution: each interstage voltage is equal in the course of the work in order to ensure circuit, first, we select same model with batch device, and want strict conformance in the design of drive circuit and absorbing circuit; Secondly, at the larger valued resistor of every inter-stage parallel connection, all pressures effect under static state is played; In addition, for the clamp circuit dynamically adopting resistance-capacitance type, ensure that the amplitude of drive singal is consistent, guarantee that multiple MOSFET is synchronous, namely the time is upper and open in amplitude completely the same.
3) power conversion
This power supply is owing to being that to be transformed into the difficulty of the direct one-stage transfor-mation of low voltage DC 15V from the voltage levels of input DC300V-DC3700V larger, when mainly considering unit exception or personnel's misoperation time secondary 15V low pressure very likely have influence on high-pressure side, former limit when breaking down, high-pressure side is then be connected with the main power device of module, so very dangerous.Consider for this, the design has done two stage power conversion in high-pressure side, though ensure DC15V side go wrong also be unlikely to directly to have influence on high pressure gets can side.As shown in Figure 3, Figure 4, the high voltage direct current electric energy of input after filtering after by start-up circuit power control part " to be waken up " and makes power supply in running order, through one-level cascade circuit of reversed excitation, bus high pressure is converted to DC400V essence electricity, proceed second level isolated variable process after process after filtering.Eventually pass full-wave rectification technology, enable the output DC15V essence electricity of high-order draw-out power supply stability and safety.
Claims (1)
- The direct current draw-out power supply of 1.IEGT power model, it is characterized in that, be set up at space structure cloth, direct current energy taking device is between IEGT valve string and power model control board, the input of direct current energy taking device is connected with the IEGT valve string fin as direct electrified body, IEGT valve string fin is positioned at the outside of IEGT valve string, and IEGT valve string fin is connected with DC capacitor by connecting busbar; Direct voltage sampling plate and IEGT drive plate are arranged between direct current draw-out power supply and IEGT valve string;The main circuit of direct current draw-out power supply comprises filter circuit, anti exciting converter, isolation push-pull converter, filter circuit is made up of common mode inductance, resistance, electric capacity, common mode inductance is respectively equipped with at positive and negative two inputs of high voltage input terminal, be connected to the common mode inductance two ends of the positive and negative input of high pressure respectively by a string all pressures string be made up of resistor coupled in parallel electric capacity, form filter circuit; Anti exciting converter is made up of multiple power circuit cascade, the input series connection of each power circuit, and output is in parallel, and the input of the power circuit be connected in series is connected with filter circuit output; The output of anti exciting converter is connected with the input of isolation push-pull converter;The course of work of the direct current draw-out power supply of IEGT power model is: the high voltage direct current electric energy of input is after filtering after circuit filtering, protect and control circuit to input overvoltage/undervoltage signal transmission by start-up circuit, the protection of input overvoltage/undervoltage and control circuit make power supply in running order, electric power signal converts through the first order through anti exciting converter, bus high pressure converted to the signal of telecommunication of DC400V and process after filtering, the signal of telecommunication after filtering process carries out second level isolated variable process through isolation push-pull converter again, eventually pass the full-wave rectification of rectification circuit, enable the signal of telecommunication of the output DC15V of high-order draw-out power supply stability and safety.
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| KR101950442B1 (en) | 2017-04-28 | 2019-02-20 | 엘에스산전 주식회사 | Submodule |
| CN108199586A (en) * | 2018-01-25 | 2018-06-22 | 太原理工大学 | A kind of high potential high voltage direct current draw-out power supply device |
| CN110034665B (en) * | 2019-05-13 | 2023-12-26 | 荣信汇科电气股份有限公司 | Combined high-capacity incoming line braking unit structure based on crimping IEGT |
| WO2022152124A1 (en) * | 2021-01-13 | 2022-07-21 | 南京南瑞继保电气有限公司 | Modular batch energy acquisition and commutation circuit and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478301A (en) * | 2008-12-31 | 2009-07-08 | 中国电力科学研究院 | High potential energy collecting device |
| CN101795064A (en) * | 2010-03-11 | 2010-08-04 | 荣信电力电子股份有限公司 | Power phase module based on IEGT |
| CN102097948A (en) * | 2010-12-31 | 2011-06-15 | 中电普瑞科技有限公司 | High potential direct current (DC) voltage energy-taking power supply |
| CN102097926A (en) * | 2011-01-14 | 2011-06-15 | 中国电力科学研究院 | Failure protection method for high-order energy gaining power supply |
| CN102201737A (en) * | 2011-03-18 | 2011-09-28 | 中国电力科学研究院 | High-order energy gaining voltage conversion circuit |
| KR20120064018A (en) * | 2010-12-08 | 2012-06-18 | 한국철도기술연구원 | The switching igbt driving control circuit for suppling equal sharing voltage to power elements and apparatus using the same |
| CN103051207A (en) * | 2012-07-31 | 2013-04-17 | 广东电网公司东莞供电局 | Injection enhanced gate transistor (IEGT)-based high-capacity water-cooled modular H-bridge structure for converter |
-
2013
- 2013-12-13 CN CN201310689906.4A patent/CN103683857B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478301A (en) * | 2008-12-31 | 2009-07-08 | 中国电力科学研究院 | High potential energy collecting device |
| CN101795064A (en) * | 2010-03-11 | 2010-08-04 | 荣信电力电子股份有限公司 | Power phase module based on IEGT |
| KR20120064018A (en) * | 2010-12-08 | 2012-06-18 | 한국철도기술연구원 | The switching igbt driving control circuit for suppling equal sharing voltage to power elements and apparatus using the same |
| CN102097948A (en) * | 2010-12-31 | 2011-06-15 | 中电普瑞科技有限公司 | High potential direct current (DC) voltage energy-taking power supply |
| CN102097926A (en) * | 2011-01-14 | 2011-06-15 | 中国电力科学研究院 | Failure protection method for high-order energy gaining power supply |
| CN102201737A (en) * | 2011-03-18 | 2011-09-28 | 中国电力科学研究院 | High-order energy gaining voltage conversion circuit |
| CN103051207A (en) * | 2012-07-31 | 2013-04-17 | 广东电网公司东莞供电局 | Injection enhanced gate transistor (IEGT)-based high-capacity water-cooled modular H-bridge structure for converter |
Non-Patent Citations (1)
| Title |
|---|
| 功率模块高电位取能方式研究;张柯等;《高压电器》;20100930;第46卷(第9期);第30-33页 * |
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Address after: 114051 Anshan high tech Zone, Liaoning province science and technology road, No. 108 Patentee after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Patentee after: China South Power Grid International Co.,Ltd. Address before: 114051 Anshan high tech Zone, Liaoning province science and technology road, No. 108 Patentee before: RONGXIN POWER ELECTRONIC Co.,Ltd. Patentee before: China South Power Grid International Co.,Ltd. |
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Application publication date: 20140326 Assignee: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Assignor: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Contract record no.: 2017210000040 Denomination of invention: Direct-current draw-out power supply of IEGT power module Granted publication date: 20151230 License type: Common License Record date: 20171212 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200210 Address after: 114000 Anshan province Liaoning City Tiedong Mountain Road No. 212 Co-patentee after: China South Power Grid International Co.,Ltd. Patentee after: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 114051 No. 108, science and technology road, hi tech Zone, Liaoning, Anshan Co-patentee before: China South Power Grid International Co.,Ltd. Patentee before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee after: Rongxin Huike Electric Co.,Ltd. Patentee after: China South Power Grid International Co.,Ltd. Address before: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Patentee before: China South Power Grid International Co.,Ltd. |