CN102222983B - Input and output integrated converter of superconducting energy storage magnet - Google Patents
Input and output integrated converter of superconducting energy storage magnet Download PDFInfo
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- CN102222983B CN102222983B CN2011101600911A CN201110160091A CN102222983B CN 102222983 B CN102222983 B CN 102222983B CN 2011101600911 A CN2011101600911 A CN 2011101600911A CN 201110160091 A CN201110160091 A CN 201110160091A CN 102222983 B CN102222983 B CN 102222983B
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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
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses an input and output integrated converter of a superconducting energy storage magnet, which can realize the three functions of charging input, variable current output, quenching and energy discharge of a superconducting energy storage magnet L. The converter comprises a full-bridge switch circuit (1), an energy discharging resistor R, a filter capacitor C and a bidirectional chopper circuit (2). The positive electrode of the full-bridge switch circuit (1) is connected with a normally closed contact P2 of a contactor K. A normally opened contact P3 of the contactor K is connected with one end of the energy discharging resistor R. A main contact P1 of the contactor K is connected with one end of the filter capacitor C. The bidirectional chopper circuit (2) is connected to two ends of the filter capacitor C in parallel. The bidirectional chopper circuit (2) is formed by connecting a positive power electronic switch S1, a positive diode D1, a reverse power electronic switch S2 and a reverse diode D2 in series. The superconducting energy storage magnet L is connected to two ends of a branch circuit in series. The branch circuit is composed of the reverse power electronic switch S2 and the reverse diode D2.
Description
Technical field
The present invention relates to a kind of current transformer for superconducting magnetic energy storage.
Background technology
In recent decades, due to developing rapidly of power electronic technology, reaching its maturity of the progress of low-temperature refrigeration technology and middle and small scale superconducting magnetic energy storage manufacturing process, make people drop into great enthusiasm to the application study of superconducting energy storage (SMES) system and superconducting magnetic energy storage.In the superconducting power field, miniature superconducting magnetic energy storage system has realized commercialization abroad, is widely used in and improves the quality of power supply, improves stability of power system.
Superconducting energy storage (SMES) magnet is that energy is stored in to a kind of energy storage device fast and efficiently in superconducting coil with the form of electromagnetic energy.With other energy storage devices relatively, SMES has that energy storage is large, conversion efficiency is high, response is rapid, environmentally safe, control facilitates and use the advantages such as flexible.
Superconducting magnetic energy storage is actually the large inductance of a non-resistance, and it is that electromagnetic energy is stored in elect magnetic field by electric energy conversion.Superconducting magnetic energy storage need to have charge power supply when accumulation of energy be its charging, and the electric energy of outside is input in superconducting magnetic energy storage; When superconducting magnetic energy storage was outwards exported energy, the electric current in superconducting magnetic energy storage is constantly decay thereupon also, and output voltage also constantly changes, so superconducting magnetic energy storage need to be equipped with the output convertor assembly to realize stable energy output; When superconducting magnetic energy storage is unfortunate, need to there is quench to unload when quench occurs fast the energy that stores in superconducting magnetic energy storage to be discharged by device, to prevent Conversion of Energy that superconducting magnetic energy storage stores, burn superconducting magnetic energy storage as heat energy.Therefore, in traditional superconductive energy storage system, generally all being equipped with charge power supply, output current transformer and quench to unload can device.It is large that these equipment not only take up an area space, and the cost costliness.
Summary of the invention
The objective of the invention is to propose a kind of charging input, unsteady flow output and quench that can realize superconducting magnetic energy storage unload can three kinds of functions integrated converter.The present invention has not only reduced the overall volume of superconductive energy storage system, and provides cost savings expense.
Integrated converter of the present invention comprises the full bridge switching circuit that is comprised of four electronic power switch connection in series-parallel, unloading can resistance, filter capacitor and two-way chopper circuit.Four electronic power switches are connected in twos and are formed two brachium pontis of full bridge switching circuit, the emitter of the electronic power switch of two the brachium pontis upper ends positive pole that forms full bridge switching circuit in parallel, the base stage of the electronic power switch of two the brachium pontis lower ends negative pole that forms full bridge switching circuit in parallel.The mid point of two brachium pontis of full bridge switching circuit inputs or outputs end as the interchange of integrated converter, and the positive pole of full bridge switching circuit and negative pole input or output end as the direct current of integrated converter.The normally-closed contact of the same contactor of positive pole of full bridge switching circuit connects, the normally opened contact of contactor connects with an end that unloads energy resistance, the main contacts of contactor connects with an end of filter capacitor, and the other end that unloads energy resistance and filter capacitor is connected on the negative pole of full bridge switching circuit simultaneously.Two-way chopper circuit is comprised of a forward power electronic switch, a forward diode, a reverse electronic power switch and a backward diode.The emitter of forward power electronic switch is with the anodic bonding of backward diode, the negative electrode of backward diode connects with the emitter of reverse electronic power switch, the base stage of reverse power electronics connects with the negative electrode of forward diode, the anodic bonding of forward diode is to the negative pole of full bridge switching circuit, and the base stage of forward power electronic switch is connected on the main contacts of contactor.Superconducting magnetic energy storage is connected in parallel on the branch road two ends of reverse electronic power switch and backward diode composition.The electronic power switch that adopts in integrated converter of the present invention can be insulated gate bipolar transistor (IGBT) or mos field effect transistor (MOSFET).
When superconducting magnetic energy storage need to charge accumulation of energy, integrated converter of the present invention was inputted energy as charge power supply to superconducting magnetic energy storage.At this moment, the whole conductings of four electronic power switches in full bridge switching circuit form full bridge rectifier, the mid point of two brachium pontis is connected on AC power as input, the closed normally-closed contact of contactor, alternating current becomes the constant voltage direct current after the filtering of the rectification of full bridge switching circuit and filter capacitor.Reverse electronic power switch conducting always in two-way chopper circuit, the conduct positive electronic power switch just can be realized just can controlling to the speed of superconducting magnetic energy storage charging if control the break-make duty ratio of forward power electronic switch to the superconducting magnetic energy storage charging again.
When superconducting magnetic energy storage needed outwards to export energy, integrated converter of the present invention was realized the energy output of superconducting magnetic energy storage as the output current transformer.At this moment, four electronic power switch alternate conduction in full bridge switching circuit form the inverter bridge circuit with turn-offing, the closed normally-closed contact of contactor, forward power electronic switch conducting always in two-way chopper circuit, turn-off reverse electronic power switch and just can realize that superconducting magnetic energy storage outwards exports energy, the superconducting magnetic energy storage output voltage filtering of electric capacity after filtering just can obtain a constant voltage direct current output.If control the speed that the break-make duty ratio of reverse electronic power switch just can be controlled superconducting magnetic energy storage output energy, thereby control the size of filter capacitor both end voltage.The positive pole of full bridge switching circuit is connected load with negative pole just can realize the output of constant voltage direct current, and in full bridge switching circuit, two brachium pontis mid points connection loads just can realize exchanging output.
When superconducting magnetic energy storage generation quench, integrated converter of the present invention can realize that the energy of superconducting magnetic energy storage discharges fast by device as unloading.At this moment; the closed normally opened contact of contactor; full bridge switching circuit is not worked; forward power electronic switch conducting always in two-way chopper circuit; the superconducting magnetic energy storage of just can realizing that turn-offs reverse electronic power switch can unload exoergic by resistance to unloading; by the break-make duty ratio of controlling reverse electronic power switch, just can control superconducting magnetic energy storage to unloading the speed that can resistance releases energy, thereby the protection superconducting magnetic energy storage is not burnt.
The accompanying drawing explanation
Fig. 1 is main circuit schematic diagram of the present invention, in figure: 1 full bridge switching circuit, 2 two-way chopper circuits, S1, S2, S3, S4, S5, S6 electronic power switch, K contactor, R unload energy resistance, the C filter capacitor, D1, D2 diode, L superconducting magnetic energy storage, the positive pole of A full bridge switching circuit, the negative pole of B full bridge switching circuit, two brachium pontis mid points in a, b full bridge switching circuit, P1 contactor main contacts, P2 contactor normally-closed contact, P3 contactor normally opened contact.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.
As shown in drawings, integrated converter of the present invention comprises full bridge switching circuit 1, unloads energy resistance R, filter capacitor C and two-way chopper circuit 2.Full bridge switching circuit 1 is comprised of four electronic power switch connection in series-parallel, wherein the 3rd electronic power switch S3 and the 5th electronic power switch S5 series connection form the left brachium pontis of full bridge switching circuit 1, and the 4th electronic power switch S4 and the 6th electronic power switch S6 series connection form the right brachium pontis of full bridge switching circuit 1.The emitter of described the 3rd electronic power switch S3 and the 4th electronic power switch S4 positive pole that forms full bridge switching circuit 1 in parallel, the base stage of described the 5th electronic power switch S5 and the 6th electronic power switch S6 negative pole that forms full bridge switching circuit 1 in parallel.The mid point of full bridge switching circuit 1 two brachium pontis in left and right is as ac input end or the output U of described integrated converter
Ab, the positive pole of full bridge switching circuit 1 and negative pole are as direct-flow input end or the output U of integrated converter
AB.The positive pole of full bridge switching circuit 1 connects with the normally-closed contact P2 of contactor K, the normally opened contact P3 of contactor K connects with an end that unloads the energy resistance R, the main contacts P1 of contactor K connects with the end of filter capacitor C, and the other end that unloads energy resistance R and filter capacitor C is connected to the negative pole of full bridge switching circuit 1 simultaneously.Two-way chopper circuit 2 is comprised of a forward the first electronic power switch S1, forward the first diode D1, reverse second an electronic power switch S2 and reverse second a diode D2.The emitter of forward the first electronic power switch S1 connects with the anode D2 of reverse the second diode, the negative electrode of reverse the second diode D2 connects with the emitter of reverse the second electronic power switch S2, the base stage of reverse the second electronic power switch S2 connects with the negative electrode of forward the first diode D1, the anodic bonding of forward the first diode D1 is to the negative pole of full bridge switching circuit 1, and the base stage of forward the first electronic power switch S1 is connected on the main contacts P1 of contactor K.Superconducting magnetic energy storage L is connected in parallel on the branch road two ends of reverse the second electronic power switch S2 and reverse the second diode D2 composition.The electronic power switch that adopts in integrated converter of the present invention can be insulated gate bipolar transistor (IGBT) or mos field effect transistor (MOSFET).
When integrated converter of the present invention is inputted energy as charge power supply to superconducting magnetic energy storage L, the whole conductings of four electronic power switches in full bridge switching circuit 1 form full bridge rectifier, the mid point of left and right brachium pontis is connected on AC power as input, the closed normally-closed contact P2 of contactor K, alternating current becomes the constant voltage direct current after the filtering of the rectification of full bridge switching circuit 1 and filter capacitor C.Reverse electronic power switch S2 conducting always in two-way chopper circuit 2, conduct positive electronic power switch S1 just can realize the charging to superconducting magnetic energy storage L again, if control the break-make duty ratio of forward power electronic switch S1, just can control to the speed of superconducting magnetic energy storage L charging.
When integrated converter of the present invention is realized the energy output of superconducting magnetic energy storage L as the output current transformer, four electronic power switch alternate conduction in full bridge switching circuit 1 form the inverter bridge circuit with turn-offing, the closed normally-closed contact P2 of contactor K, forward power electronic switch S1 conducting always in two-way chopper circuit 2, turn-off reverse electronic power switch S2 and just can realize that superconducting magnetic energy storage L outwards exports energy, the superconducting magnetic energy storage L output voltage filtering of capacitor C after filtering just can obtain a constant voltage direct current output.If control the speed that the break-make duty ratio of reverse electronic power switch S2 just can be controlled superconducting magnetic energy storage L output energy, thereby control the size of filter capacitor C both end voltage.The positive pole of full bridge switching circuit 1 is connected load with negative pole just can realize the output of constant voltage direct current, and in full bridge switching circuit 1, left and right brachium pontis mid point connection load just can realize exchanging output.
Integrated converter of the present invention unloads while can device realizing that the energy of superconducting magnetic energy storage L discharges fast as quench; the closed normally opened contact P3 of contactor K; full bridge switching circuit 1 is not worked; forward power electronic switch S1 conducting always in two-way chopper circuit 2; the superconducting magnetic energy storage L that just can realize that turn-offs reverse electronic power switch S2 can resistance R unload exoergic to unloading; by the break-make duty ratio of controlling reverse electronic power switch S2, just can control superconducting magnetic energy storage L to unloading the speed that can resistance R releases energy, thereby protection superconducting magnetic energy storage L is not burnt.
Claims (4)
1. a superconducting magnetic energy storage input and output integrated converter, is characterized in that, described integrated converter by full bridge switching circuit (1), unloading can resistance R, filter capacitor C and two-way chopper circuit (2) form; The normally-closed contact P2 of the same contactor K of positive pole of full bridge switching circuit (1) connects, the normally opened contact P3 of contactor K connects with an end that unloads the energy resistance R, the main contacts P1 of contactor K connects with the end of filter capacitor C, and the other end that unloads energy resistance R and filter capacitor C is connected to the negative pole of full bridge switching circuit (1) simultaneously; The negative electrode of forward the first diode (D1) in two-way chopper circuit (2) is connected to the negative pole of full bridge switching circuit (1), and the collector electrode of forward the first electronic power switch (S1) is connected on the main contacts P1 of contactor K; Superconducting magnetic energy storage L is connected in parallel on the branch road two ends of reverse the second electronic power switch (S2) and reverse the second diode (D2) composition;
Described full bridge switching circuit (1) is comprised of four electronic power switch connection in series-parallel, wherein the 3rd electronic power switch (S3) and the series connection of the 5th electronic power switch (S5) form the left brachium pontis of full bridge switching circuit (1), and the 4th electronic power switch (S4) and the series connection of the 6th electronic power switch (S6) form the right brachium pontis of full bridge switching circuit (1); The emitter of described the 3rd electronic power switch (S3) and the 4th electronic power switch (S4) positive pole that forms full bridge switching circuit (1) in parallel, the collector electrode of described the 5th electronic power switch (S5) and the 6th electronic power switch (S6) negative pole that forms full bridge switching circuit (1) in parallel; The mid point of two brachium pontis in full bridge switching circuit (1) left and right is as ac input end or the output U of described integrated converter
Ab, the positive pole of full bridge switching circuit (1) and negative pole are as direct-flow input end or the output U of described integrated converter
ABDescribed two-way chopper circuit (2) is comprised of forward the first electronic power switch (S1), forward the first diode (D1), reverse the second electronic power switch (S2) and reverse the second diode (D2); The emitter of forward the first electronic power switch (S1) connects with the negative electrode of reverse the second diode (D2), the anode of reverse the second diode (D2) connects with the emitter of reverse the second electronic power switch (S2), and the collector electrode of reverse the second electronic power switch (S2) is with the anodic bonding of forward the first diode (D1).
2. according to superconducting magnetic energy storage input and output integrated converter claimed in claim 1, it is characterized in that, when integrated converter is inputted energy as charge power supply to superconducting magnetic energy storage L, the whole conductings of four electronic power switches in full bridge switching circuit (1) form full bridge rectifier, the mid point of left and right brachium pontis is connected on AC power as input, the closed normally-closed contact P2 of contactor K, alternating current becomes the constant voltage direct current after the filtering of the rectification of full bridge switching circuit (1) and filter capacitor C; Reverse the second electronic power switch (S2) conducting always in two-way chopper circuit (2), then conduct positive the first electronic power switch (S1), realize charging to superconducting magnetic energy storage L; Control the speed of the break-make Duty ratio control of forward the first electronic power switch (S1) to superconducting magnetic energy storage L charging.
3. according to superconducting magnetic energy storage input and output integrated converter claimed in claim 1, it is characterized in that, when integrated converter realizes that as the output current transformer superconducting magnetic energy storage L outwards exports energy, four electronic power switch alternate conduction in full bridge switching circuit (1) form the inverter bridge circuit with turn-offing, the closed normally-closed contact P2 of contactor K, forward the first electronic power switch (S1) conducting always in two-way chopper circuit (2), turn-off reverse the second electronic power switch (S2) and realize that superconducting magnetic energy storage L outwards exports energy, the superconducting magnetic energy storage L output voltage filtering of capacitor C after filtering obtains a constant voltage direct current output, control the speed of the break-make Duty ratio control superconducting magnetic energy storage L output energy of reverse the second electronic power switch (S2), thereby control the size of filter capacitor C both end voltage, the positive pole of full bridge switching circuit (1) is connected load with negative pole can realize the output of constant voltage direct current, and in full bridge switching circuit (1), left and right brachium pontis mid point connection load can realize exchanging output.
4. according to superconducting magnetic energy storage input and output integrated converter claimed in claim 1, it is characterized in that, integrated converter unloads while can device realizing that the energy of superconducting magnetic energy storage L discharges fast as quench, the closed normally opened contact P3 of contactor K, full bridge switching circuit (1) is not worked, forward the first electronic power switch (S1) conducting always in two-way chopper circuit (2), turn-off reverse the second electronic power switch (S2) and realize that superconducting magnetic energy storage L can resistance R unload exoergic to unloading, break-make Duty ratio control superconducting magnetic energy storage L by controlling reverse the second electronic power switch (S2) is to unloading the speed that can resistance R releases energy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101600911A CN102222983B (en) | 2011-06-15 | 2011-06-15 | Input and output integrated converter of superconducting energy storage magnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101600911A CN102222983B (en) | 2011-06-15 | 2011-06-15 | Input and output integrated converter of superconducting energy storage magnet |
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| CN102222983A CN102222983A (en) | 2011-10-19 |
| CN102222983B true CN102222983B (en) | 2013-11-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109347341A (en) * | 2018-11-13 | 2019-02-15 | 中国原子能科学研究院 | It is a kind of with the ultrastability Switching Power Supply for quenching defencive function |
| CN109818506B (en) * | 2019-03-08 | 2024-01-05 | 中国科学院合肥物质科学研究院 | Superconducting magnet switching power supply with energy feedback |
| CN113839435B (en) * | 2020-10-26 | 2022-09-06 | 上海交通大学 | Pulse type superconducting magnet charging and magnetism supplementing circuit |
| CN116995714B (en) * | 2023-09-28 | 2023-12-19 | 中宏科创新能源科技(浙江)有限公司 | Energy storage converter and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1125868A (en) * | 1966-07-30 | 1968-09-05 | Olivetti General Electric Spa | Direct current voltage converters |
| US3711744A (en) * | 1972-06-01 | 1973-01-16 | Atomic Energy Commission | Passive energy dump for superconducting coil protection |
| CN101707367A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院电工研究所 | Superconducting current-limiting energy storage circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01283906A (en) * | 1988-05-11 | 1989-11-15 | Hitachi Ltd | Superconductive energy storing system |
| JPH0638409A (en) * | 1992-07-22 | 1994-02-10 | Nippon Telegr & Teleph Corp <Ntt> | Controlling method for superconducting energy storage/ conversion device |
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2011
- 2011-06-15 CN CN2011101600911A patent/CN102222983B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1125868A (en) * | 1966-07-30 | 1968-09-05 | Olivetti General Electric Spa | Direct current voltage converters |
| US3711744A (en) * | 1972-06-01 | 1973-01-16 | Atomic Energy Commission | Passive energy dump for superconducting coil protection |
| CN101707367A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院电工研究所 | Superconducting current-limiting energy storage circuit |
Non-Patent Citations (2)
| Title |
|---|
| JP平1-283906A 1989.11.15 |
| JP特开平6-38409A 1994.02.10 |
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