CN102222983A - 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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- CN102222983A CN102222983A CN2011101600911A CN201110160091A CN102222983A CN 102222983 A CN102222983 A CN 102222983A CN 2011101600911 A CN2011101600911 A CN 2011101600911A CN 201110160091 A CN201110160091 A CN 201110160091A CN 102222983 A CN102222983 A CN 102222983A
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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 that is used for superconducting magnetic energy storage.
Background technology
In recent decades, because 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 makes 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 a kind of energy storage device fast and efficiently in the superconducting coil with the form of electromagnetic energy.With other energy storage devices relatively, SMES has that energy storage is big, conversion efficiency is high, response is rapid, environmentally safe, control makes things convenient for and use advantages such as flexible.
Superconducting magnetic energy storage is actually the big inductance of a non-resistance, and it is converted into electromagnetic energy with electric energy and is stored in the electromagnetic field.Superconducting magnetic energy storage needs charge power supply and is its charging when accumulation of energy, the electric energy of outside is input in the superconducting magnetic energy storage; When superconducting magnetic energy storage was outwards exported energy, the electric current in the superconducting magnetic energy storage is constantly decay thereupon also, and output voltage also constantly changes, so superconducting magnetic energy storage need be equipped with the output convertor assembly to realize stable energy output; When superconducting magnetic energy storage is unfortunate need when quench takes place quench unload can device fast with superconducting magnetic energy storage in energy stored discharge, to prevent that the superconducting magnetic energy storage energy stored is converted into heat energy and burns superconducting magnetic energy storage.Therefore, generally all being equipped with charge power supply, output current transformer and quench to unload in the traditional superconductive energy storage system can device.It is big that these equipment not only take up an area of the 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 of superconducting magnetic energy storage of can realizing and unload the one current transformer of three kinds of functions of energy.The present invention has not only reduced the overall volume of superconductive energy storage system, and provides cost savings expense.
One current transformer of the present invention comprises the full bridge switching circuit be made up 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 one current transformer, and the positive pole of full bridge switching circuit and negative pole input or output end as the direct current of one current transformer.The normally-closed contact of the anodal same contactor 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 made up 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 connects with the anode 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 anode of forward diode is connected 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 is adopted in the one current transformer of the present invention can be insulated gate bipolar transistor (IGBT) or mos field effect transistor (MOSFET).
When superconducting magnetic energy storage need charge accumulation of energy, one current transformer of the present invention as charge power supply to the superconducting magnetic energy storage intake.At this moment, the whole conductings of four electronic power switches in the full bridge switching circuit form full bridge rectifier, the mid point of two brachium pontis is connected on the AC power as input, the closed normally-closed contact of contactor becomes the constant voltage direct current after the rectification of alternating current process full bridge switching circuit and the filtering of filter capacitor.Reverse electronic power switch conducting always in the two-way chopper circuit, the conduct positive electronic power switch just can be realized to the superconducting magnetic energy storage charging again, if the break-make duty ratio of control forward power electronic switch just can be controlled the speed to the superconducting magnetic energy storage charging.
When superconducting magnetic energy storage needed outwards to export energy, one current transformer 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 the 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 the 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 just can obtain a constant voltage direct current through the filtering of filter capacitor and export.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, thus the size of control 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 two brachium pontis mid points connection loads just can realize exchanging output in the full bridge switching circuit.
When superconducting magnetic energy storage generation quench, one current transformer of the present invention is realized the energy rapid release of superconducting magnetic energy storage as unloading the energy device.At this moment; the closed normally opened contact of contactor; full bridge switching circuit is not worked; forward power electronic switch conducting always in the 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; just can control superconducting magnetic energy storage to unloading the speed that can resistance releases energy by the break-make duty ratio of controlling reverse electronic power switch, thereby the protection superconducting magnetic energy storage is not burnt.
Description of drawings
Fig. 1 is a main circuit schematic diagram of the present invention, among the 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, the b full bridge switching circuit, P1 contactor main contacts, P2 contactor normally-closed contact, P3 contactor normally opened contact.
Embodiment
Further specify the present invention below in conjunction with the drawings and specific embodiments.
As shown in drawings, one current transformer 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 made up 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 forms 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 about 1 two brachium pontis of full bridge switching circuit is as the ac input end or the output U of described one current transformer
Ab, the positive pole of full bridge switching circuit 1 and negative pole are as the direct-flow input end or the output U of one current transformer
ABThe 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 made up of a forward first electronic power switch S1, the forward first diode D1, reverse second an electronic power switch S2 and reverse second a diode D2.The emitter of the forward first electronic power switch S1 connects with the anode D2 of reverse second diode, the negative electrode of the reverse second diode D2 connects with the emitter of the reverse second electronic power switch S2, the base stage of the reverse second electronic power switch S2 connects with the negative electrode of the forward first diode D1, the anode of the forward first diode D1 is connected to the negative pole of full bridge switching circuit 1, and the base stage of the forward 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 second electronic power switch S2 and reverse second diode D2 composition.The electronic power switch that is adopted in the one current transformer of the present invention can be insulated gate bipolar transistor (IGBT) or mos field effect transistor (MOSFET).
One current transformer of the present invention as charge power supply when the superconducting magnetic energy storage L intake, the whole conductings of four electronic power switches in the full bridge switching circuit 1 form full bridge rectifier, the mid point of left and right sides brachium pontis is connected on the AC power as input, the closed normally-closed contact P2 of contactor K becomes the constant voltage direct current after the rectification of alternating current process full bridge switching circuit 1 and the filtering of filter capacitor C.Reverse electronic power switch S2 conducting always in the two-way chopper circuit 2, conduct positive electronic power switch S1 just can realize the charging to superconducting magnetic energy storage L again, if the break-make duty ratio of control forward power electronic switch S1 just can be controlled the speed to superconducting magnetic energy storage L charging.
When one current transformer 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 the 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 the 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, superconducting magnetic energy storage L output voltage just can obtain a constant voltage direct current output through the filtering of filtering capacitor C.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, thus the size of control 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 left and right sides brachium pontis mid point connection load just can realize exchanging output in the full bridge switching circuit 1.
When one current transformer of the present invention unloads the energy rapid release of energy device realization superconducting magnetic energy storage L 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 the 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; just can control superconducting magnetic energy storage L to unloading the speed that can resistance R releases energy by the break-make duty ratio of controlling reverse electronic power switch S2, thereby protection superconducting magnetic energy storage L is not burnt.
Claims (5)
1. a superconducting magnetic energy storage input and output one current transformer is characterized in that, described one current transformer by full bridge switching circuit (1), unloading can resistance R, filter capacitor C and two-way chopper circuit (2) are formed; The normally-closed contact P2 of the anodal same contactor K 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 anode of forward first diode (D1) in the two-way chopper circuit (2) is connected to the negative pole of full bridge switching circuit (1), and the base stage of forward 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 second electronic power switch (S2) and reverse second diode (D2) composition.
2. according to the described superconducting magnetic energy storage input and output of claim 1 one current transformer, it is characterized in that described full bridge switching circuit (1) is made up of four electronic power switch connection in series-parallel, wherein the series connection of the 3rd electronic power switch (S3) and the 5th electronic power switch (S5) forms 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 two brachium pontis is as the ac input end or the output U of described one current transformer about full bridge switching circuit (1)
Ab, the positive pole of full bridge switching circuit (1) and negative pole are as the direct-flow input end or the output U of described one current transformer
ABDescribed two-way chopper circuit (2) is made up of forward first electronic power switch (S1), forward first diode (D1), reverse second electronic power switch (S2) and reverse second diode (D2); The emitter of forward first electronic power switch (S1) connects with the anode (D2) of reverse second diode, the negative electrode of reverse second diode (D2) connects with the emitter of reverse second electronic power switch (S2), and the base stage of reverse second electronic power switch (S2) connects with the negative electrode of forward first diode (D1).
3. according to the described superconducting magnetic energy storage input and output of claim 1 one current transformer, it is characterized in that, the one current transformer as charge power supply when the superconducting magnetic energy storage L intake, the whole conductings of four electronic power switches in the full bridge switching circuit (1) form full bridge rectifier, the mid point of left and right sides brachium pontis is connected on the AC power as input, the closed normally-closed contact P2 of contactor K becomes the constant voltage direct current after the rectification of alternating current process full bridge switching circuit (1) and the filtering of filter capacitor C; Reverse electronic power switch S2 conducting always in the two-way chopper circuit (2), conduct positive electronic power switch S1 just can realize the charging to superconducting magnetic energy storage L again, if the break-make duty ratio of control forward power electronic switch S1 just can be controlled the speed to superconducting magnetic energy storage L charging.
4. according to the described superconducting magnetic energy storage input and output of claim 1 one current transformer, it is characterized in that, when the one current transformer realizes that as the output current transformer superconducting magnetic energy storage L outwards exports energy, four electronic power switch alternate conduction in the 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 the 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, superconducting magnetic energy storage L output voltage just can obtain a constant voltage direct current output through the filtering of filtering capacitor C; 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, thus the size of control 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 left and right sides brachium pontis mid point connection load just can realize exchanging output in the full bridge switching circuit (1).
5. according to the described superconducting magnetic energy storage input and output of claim 1 one current transformer, it is characterized in that, when the one current transformer unloads the energy rapid release of energy device realization superconducting magnetic energy storage L 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 the 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, and just can control superconducting magnetic energy storage L to unloading the speed that the energy resistance R releases energy by the break-make duty ratio of controlling reverse electronic power switch S2.
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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 true CN102222983A (en) | 2011-10-19 |
| CN102222983B CN102222983B (en) | 2013-11-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109818506A (en) * | 2019-03-08 | 2019-05-28 | 中国科学院合肥物质科学研究院 | A kind of superconducting magnet Switching Power Supply with energy feedback and ultrahigh in efficiency |
| WO2022088922A1 (en) * | 2020-10-26 | 2022-05-05 | 上海交通大学 | Pulse charging and magnetization circuit for superconducting magnet |
| CN116995714A (en) * | 2023-09-28 | 2023-11-03 | 中宏科创新能源科技(浙江)有限公司 | Energy storage converter and control method thereof |
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| US3711744A (en) * | 1972-06-01 | 1973-01-16 | Atomic Energy Commission | Passive energy dump for superconducting coil protection |
| 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 |
| CN101707367A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院电工研究所 | Superconducting current-limiting energy storage circuit |
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2011
- 2011-06-15 CN CN2011101600911A patent/CN102222983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| JPH01283906A (en) * | 1988-05-11 | 1989-11-15 | Hitachi Ltd | Superconductive energy storing system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109818506A (en) * | 2019-03-08 | 2019-05-28 | 中国科学院合肥物质科学研究院 | A kind of superconducting magnet Switching Power Supply with energy feedback and ultrahigh in efficiency |
| 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 |
| WO2022088922A1 (en) * | 2020-10-26 | 2022-05-05 | 上海交通大学 | Pulse charging and magnetization circuit for superconducting magnet |
| US11871683B2 (en) * | 2020-10-26 | 2024-01-09 | Shanghai Jiao Tong University | Charging and field supplement circuit for superconducting magnets based on pulsed current |
| CN116995714A (en) * | 2023-09-28 | 2023-11-03 | 中宏科创新能源科技(浙江)有限公司 | Energy storage converter and control method thereof |
| 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 |
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| CN102222983B (en) | 2013-11-20 |
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