CN102195513A - Self-coupled air-core superconducting energy storage pulse transformer - Google Patents
Self-coupled air-core superconducting energy storage pulse transformer Download PDFInfo
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- CN102195513A CN102195513A CN2011101396318A CN201110139631A CN102195513A CN 102195513 A CN102195513 A CN 102195513A CN 2011101396318 A CN2011101396318 A CN 2011101396318A CN 201110139631 A CN201110139631 A CN 201110139631A CN 102195513 A CN102195513 A CN 102195513A
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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
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Abstract
The invention discloses a self-coupled air-core superconducting energy storage pulse transformer, which comprises a serially connected coupled superconducting inductance coil, a protective resistor, a diode and a superconducting cutoff switch, wherein corresponding terminals of primary and secondary side superconducting coils are connected in series with each other and are tightly coupled; when the cutoff switch is closed, the device is positioned in an energy storage state, and the primary and secondary side superconducting coils stores current through the superconducting cutoff switch; and when the superconducting cutoff switch is cut off, the device is positioned in a discharge state, energy stored by the primary side superconducting coil is transmitted to the secondary side superconducting coil through a magnetic field, and a load is discharged by the secondary superconducting coil. The pulse transformer is low in loss and high in material utilization rate, and can obviously improve discharge current amplitude of the inductance coil and reduce time constants output by a pulse.
Description
Technical field
The invention belongs to energy storage and pulse current generating device in the pulse power application, particularly a kind of high amplitude impulse current generator spare to improve inductance pulse output current amplitude, reduces the time constant of inductance pulse output.
Background technology
Pulse Power Techniques are by energy storage device is slowly charged.In very short time, pass through then energy pulses compression, shaping, transmission, coupling and switch constant power regulating system are handled.Obtain the electric pulse output of various desirable high-amplitude, high-power, steep-front, for various application targets provide the strong current pulse power source.High pulse power technology comes into one's own day by day as high-new, sophisticated technology at present, aspect new concept weapon and following high-speed carriering tool, has great development potentiality.Pulse Power Techniques are at modern science and technology research, industrial circle, and national defense and military fields all are widely used, as nuclear fusion, accelerator, impulse magnetic field, machining, material processed, environmental protection, electromagnetic propulsion technology, hypervelocity collision mechanics, laser, magnetic artillery, microwave weapon, particle beam weapon and Electro-magnetic Launcher System etc.With laser, the particle beams, magnetic artillery and take off the important force de frappe that new concept weapon such as electromagnetic launch system will become following weapon.This class weapon needs great power pulse power source.Superconduction inductive energy storage (SMES) is zero because of its D.C. resistance, can realize long energy storage, in the Pulse Power Techniques that need the energy storage standby application promise in clinical practice is arranged.But the pulse of superconduction inductance output is limited by the switch connecting-disconnecting function, the big electric current of difficult acquisition.Simultaneously, when the superconduction inductance directly discharged to little impedance load, the time constant of pulse output was big, was difficult to obtain the pulse output of high repetition frequency.At present, the main mode of superconduction inductance pulse output has:
(1) the direct pulsed output mode of superconducting energy storage inductance.The superconduction inductance directly discharges to load impedance.This pulse output needs cut-off switch to realize, so the amplitude of pulse current depends on the connecting-disconnecting function of switch in some sense, and the existing limited connecting-disconnecting function of switch has limited the amplitude of pulse output current.
(2) the superconducting energy storage inductance is by the capacitor pulsed output mode.The superconduction inductance charges to capacitor, again by capacitor to load discharge.Capacitor discharge only needs Closing Switch, therefore the switch connecting-disconnecting function is not required, can obtain the pulse output current of higher magnitude, but need to expend certain hour the energy transfer process from inductance to electric capacity, be unfavorable for producing the pulse output of high repetition frequency.
(3) as proposing multimode superconducting energy storage inductance in the patent " high-temperature superconducting magnet pulse-shaping device " (publication number CN1988382A) by hollow pulse transformer pulsed output mode.The superconducting energy storage inductance is to the hollow pulse transformer discharge of step-down up-flow, and pulse current acts on the load impedance that links to each other with transformer secondary winding after transformer promotes.The method can effectively improve the pulse current amplitude on the load impedance, also can reduce the time constant of pulse output, but produce aftercurrent (DC component of remnants in the inductance second-order circuit) in the inductive discharge process of the former limit of superconducting energy storage inductance pulse transformer, reduced energy transfer efficiency.The stack of aftercurrent on the winding of the former limit of pulse transformer can change the initial condition and the output waveform of subsequent module pulse output, makes the pulse output procedure be difficult to control more.
Summary of the invention
The invention provides a kind of autocoupling type hollow superconducting energy storage pulse transformer, purpose is to overcome the deficiency of existing breaking capacity of breaker, improves inductance pulse current output amplitude, reduces the time constant of pulse output.
Technical scheme of the present invention is as follows:
Autocoupling type hollow superconducting energy storage pulse transformer the present invention includes series connection and the former limit superconducting coil that intercouples and secondary superconducting coil, protective resistance, superconduction disconnect and diode, and its syndeton is:
The end series connection of the same name of former limit superconducting coil and secondary superconducting coil, coupling coefficient is in the 0.95-1 scope;
The series arm that protective resistance and former limit superconducting coil and secondary superconducting coil are formed is in parallel;
The series arm that superconduction disconnect and former limit superconducting coil and secondary superconducting coil are formed is in parallel;
Diode and load impedance constitute series arm, and this series arm is in parallel with the secondary superconducting coil.
When superconducting switch was closed, device was in the energy storage state, and former limit superconducting coil and secondary superconducting coil hold stream by superconducting switch; When superconducting switch disconnected, device was in the former limit of discharge condition superconducting coil energy stored and is delivered to the secondary superconducting coil by magnetic field, was discharged by the diode pair load impedance by the secondary superconducting coil again.
Described autocoupling type hollow superconducting energy storage pulse transformer, it is characterized in that: the primary coil of described series connection and secondary coil material are superconductor.
Described autocoupling type hollow superconducting energy storage pulse transformer is characterized in that: the superconduction disconnect adopts superconducting switch.
Beneficial effect of the present invention is: this device adopts the autotransformer pattern, has integrated superconducting energy storage inductance and hollow pulse transformer, has improved the amplitude of superconduction inductance pulse output current, has reduced the time constant of pulse output.When the superconduction disconnect was closed, former limit superconducting coil of connecting in the device and secondary superconducting coil be as energy storage inductor, and hold stream by the superconduction disconnect is harmless, improved the utilance of superconductor; When switch cut-off, energy stored was passed to the secondary superconducting coil by magnetic field in the superconducting coil of former limit, instantaneous to the secondary superconducting coil fill can, directly load impedance is discharged via the secondary superconducting coil again.Among the present invention, the discharge mode of autotransformer changes by the instantaneous transfer energy in magnetic field and promotes current amplitude, directly load impedance is discharged via small inductor (secondary winding) again, improving pulse output current amplitude and reducing on the basis of pulse output time constant, further eliminated the aftercurrent of inductance, improved energy utilization efficiency by producing in the transformer discharge.Loss of the present invention is very low, and operating cost is little, can improve the current amplitude and the efficient of superconduction inductance pulse output significantly.Therefore, this apparatus structure is simple, technology maturation, is easy to suitability for industrialized production.
Description of drawings
Fig. 1 is applied to the circuit diagram of inductive energy storage and pulse current generation systems for the embodiment of the invention;
When of the present invention, former limit superconducting coil current waveform, abscissa are time (ms) to Fig. 2 in order to use, and ordinate is electric current (KA);
When of the present invention, secondary superconducting coil current waveform, abscissa are time (ms) to Fig. 3 in order to use, and ordinate is electric current (KA);
Fig. 4 is for using when of the present invention, load current waveform, and abscissa is time (ms), ordinate is electric current (KA).
Embodiment
The present invention includes the former limit superconducting coil 1 and secondary superconducting coil 2, protective resistance 3, superconduction disconnect 4 and diode 5 of end series connection of the same name.At first, when superconduction disconnect 4 disconnected, former limit superconducting coil 1 and secondary superconducting coil 2 were connected serially to voltage source by ordinary tap K
V SFill can, fill can finish after, superconduction disconnect 4 closures, former limit superconducting coil 1 and secondary superconducting coil 2 forms with superconduction disconnect 4 and holds the stream tank circuit; When carrying out pulse output, superconduction disconnect 4 disconnects, the instantaneous secondary superconducting coil 2 that is passed to of energy of former limit superconducting coil 1 storage, and pass through secondary superconducting coil 2 and separately load impedance is discharged.Detailed process is as follows:
Superconducting coil fills and can at first disconnect superconducting switch 4 by process need, and closed then ordinary tap K makes voltage source
V SFormer limit superconducting coil 1 and secondary superconducting coil 2 to series connection charge.Because the unidirectional conduction of diode 5, the charging process and the load impedance of superconducting coil are isolated fully.Current amplitude reaches desired value on former limit superconducting coil 1 and secondary superconducting coil 2
I 0After, cut-offfing ordinary tap K, closed superconduction disconnect 4 fills and can process finish simultaneously.The former limit superconducting coil 1 of series connection this moment and secondary superconducting coil 2 are formed a harmless loop, direct current with superconduction disconnect 4
I 0 In the loop, be in the zero-decrement stream mode of holding.
When superconduction disconnect 4 disconnects because protective resistance 3 is much larger than other circuit parameters, former limit superconducting coil 1 by magnetic field to 2 chargings of secondary superconducting coil.The electric current of former limit superconducting coil 1 decays to 0 very soon at this moment, and the current amplitude of secondary superconducting coil 2 increases in a short period of time
(
L p Be the self-induction of former limit superconducting coil 1,
L s Be the self-induction of secondary superconducting coil 2,
kBe the coupling coefficient between former limit superconducting coil 1 and the secondary superconducting coil 2), directly load impedance is discharged then.
Situation under, this discharge mode has effectively promoted the discharging current amplitude by the electromagnetic coupled between former limit superconducting coil 1 and the secondary superconducting coil 2, has reduced the requirement to the switch connecting-disconnecting function; The mode of directly load impedance being discharged by secondary superconducting coil 2 on the basis that reduces pulse output time constant, has further been eliminated the aftercurrent that is produced when the superconduction inductance discharges to load impedance by pulse transformer simultaneously.
Embodiment as shown in Figure 1, the relevant parameter of circuit is as follows:
Ideal current source:
V S=10KV; Internal resistance
R=10
The self-induction of former limit superconducting coil:
L p =100mH;
The self-induction of secondary superconducting coil:
L s =1mH
The mutual inductance of former and deputy sideline circle:
M=9.5mH; Coupling coefficient:
k=0.95;
Protective resistance
R=1000
Load impedance
R d =0.16
(pure resistive);
Fig. 2～4 are depicted as the oscillogram of embodiment pulse output.During t=0ms, ordinary tap K closure, device begins charging; During t=8ms, cut-off ordinary tap K, closed superconduction disconnect 4 of while, device is in energy storage and holds stream mode; During t=20ms, superconduction disconnect 4 disconnects, and device is in the pulse output state.
As Fig. 2, shown in Figure 3, in the 0-8ms, power supply charges to former limit superconducting coil 1 and secondary superconducting coil 2
I 0=1KA.According to different superconducting coil inductance value, choose suitable power supply and internal resistance and can regulate charging rate.Be not difficult to find from Fig. 4, the unidirectional conduction of diode 5 in the charging process, the secondary superconducting coil 2 that will be in the charging process is isolated fully with load impedance.
When t=8ms, cut-off ordinary tap K, closed superconduction disconnect 4 of while, device changes energy storage over to and holds stream mode.Can find from Fig. 2, Fig. 3, because the D.C. resistance of former limit superconducting coil 1, secondary superconducting coil 2 and superconduction disconnect 4 is 0, in 8-20ms, the direct current in former limit superconducting coil 1 and the secondary superconducting coil 2
I 0 Not decay.Be not difficult to find that because secondary superconducting coil 2 D.C. resistances are 0, load impedance is by 2 short circuits of secondary superconducting coil from Fig. 4, thus be in the secondary superconducting coil 2 that holds stream energy storage state and isolate fully.
When t=20ms, cut-off superconduction disconnect 4, device is in the pulse output state.From Fig. 2,3 as can be known, because protective resistance 3 is much larger than other parameters of circuit, the electric current of former limit superconducting coil 1 is decayed at a terrific speed, and moment charges to about 10.5KA(with secondary superconducting coil 2
).Under the autotransformer pattern, 2 chargings of 1 pair of secondary superconducting coil of former limit superconducting coil are inverter circuits by magnetic circuit, thereby have eliminated aftercurrent, have improved the energy transfer efficiency of pulse output.
In theory, 2 pairs of load impedance discharges of secondary superconducting coil begin simultaneously with the charging of 1 pair of secondary superconducting coil 2 of former limit superconducting coil, but owing to the charging interval is extremely short, much smaller than the discharge time constant of 2 pairs of loads of secondary superconducting coil; We can be similar to and think and begin load discharge after secondary superconducting coil 2 charging is finished, and maximum discharge current equals the current peak after 2 chargings of secondary superconducting coil, so the peak value of pulse current is equal substantially among Fig. 3 and Fig. 4.Therefore select the self-induction value of suitable former limit superconducting coil 1 and secondary superconducting coil 2 can obtain desirable pulse output current peak value; According to the self-induction value of load impedance size adjustment secondary superconducting coil 2, also can obtain desirable pulse output time constant simultaneously.
Claims (3)
1. autocoupling type hollow superconducting energy storage pulse transformer is characterized in that, includes former limit superconducting coil (1), secondary superconducting coil (2), protective resistance (3), superconduction disconnect (4) and diode (5), and its syndeton is:
The end series connection of the same name of former limit superconducting coil (1) and secondary superconducting coil (2), coupling coefficient is in the 0.95-1 scope;
Protective resistance (3) is in parallel with the series arm that former limit superconducting coil (1) and secondary superconducting coil (2) are formed;
Disconnect (4) is in parallel with the series arm that former limit superconducting coil (1) and secondary superconducting coil (2) are formed;
Diode (5) constitutes series arm with load impedance, and this series arm is in parallel with secondary superconducting coil (2).
2. autocoupling type hollow superconducting energy storage pulse transformer as claimed in claim 1 is characterized in that: the former limit superconducting coil (1) of described series connection is a high temperature superconducting materia with secondary superconducting coil (2) material.
3. autocoupling type hollow superconducting energy storage pulse transformer as claimed in claim 1 is characterized in that: superconduction disconnect (4) adopts superconducting switch.
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| CN2011101396318A CN102195513A (en) | 2011-05-27 | 2011-05-27 | Self-coupled air-core superconducting energy storage pulse transformer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723891A (en) * | 2012-07-04 | 2012-10-10 | 西南交通大学 | Pulsed power supply based on superconductivity normal-conductivity combined pulse transformer |
| CN103715938A (en) * | 2013-12-25 | 2014-04-09 | 华中科技大学 | Flat-topped pulse magnetic field generating device and flat-topped pulse current generating device |
| CN104601034A (en) * | 2015-02-06 | 2015-05-06 | 山东理工大学 | Multi-module pulsed power supply based on energy storage of high-temperature super-conduction pulsing transformers |
| CN105513774A (en) * | 2016-01-26 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Transformer |
| CN105719815A (en) * | 2016-01-25 | 2016-06-29 | 华中科技大学 | Hollow-core pulse transformer for coupling transformer type DC circuit breaker and parameter acquisition method of hollow-core pulse transformer |
| CN105897033A (en) * | 2016-06-02 | 2016-08-24 | 清华大学 | Capacitor multiplexing type inductive energy-storage type pulse power supply used for electromagnetic emission |
| CN111082696A (en) * | 2018-10-18 | 2020-04-28 | 清华大学 | Pulse circuit, method of using the same, and pulse power supply |
| CN111082694A (en) * | 2018-10-18 | 2020-04-28 | 清华大学 | Pulse circuit, pulse power supply and electromagnetic transmitting device |
| CN113691023A (en) * | 2021-07-30 | 2021-11-23 | 华电电力科学研究院有限公司 | Photovoltaic direct-current composite energy storage system and method based on temperature field control technology |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723891A (en) * | 2012-07-04 | 2012-10-10 | 西南交通大学 | Pulsed power supply based on superconductivity normal-conductivity combined pulse transformer |
| CN103715938A (en) * | 2013-12-25 | 2014-04-09 | 华中科技大学 | Flat-topped pulse magnetic field generating device and flat-topped pulse current generating device |
| CN103715938B (en) * | 2013-12-25 | 2016-04-20 | 华中科技大学 | A kind of square-topped pulse magnetic field generation device and square-topped pulse electric current-producing device |
| CN104601034B (en) * | 2015-02-06 | 2017-10-03 | 山东理工大学 | A kind of multimode pulse power based on high-temperature superconductor pulse transformer energy storage |
| CN104601034A (en) * | 2015-02-06 | 2015-05-06 | 山东理工大学 | Multi-module pulsed power supply based on energy storage of high-temperature super-conduction pulsing transformers |
| CN105719815A (en) * | 2016-01-25 | 2016-06-29 | 华中科技大学 | Hollow-core pulse transformer for coupling transformer type DC circuit breaker and parameter acquisition method of hollow-core pulse transformer |
| CN105513774A (en) * | 2016-01-26 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Transformer |
| CN105897033A (en) * | 2016-06-02 | 2016-08-24 | 清华大学 | Capacitor multiplexing type inductive energy-storage type pulse power supply used for electromagnetic emission |
| CN105897033B (en) * | 2016-06-02 | 2018-10-30 | 清华大学 | A kind of capacitance multiplexing type inductive energy storage type pulse power for Electromagnetic Launching |
| CN111082696A (en) * | 2018-10-18 | 2020-04-28 | 清华大学 | Pulse circuit, method of using the same, and pulse power supply |
| CN111082694A (en) * | 2018-10-18 | 2020-04-28 | 清华大学 | Pulse circuit, pulse power supply and electromagnetic transmitting device |
| CN111082694B (en) * | 2018-10-18 | 2021-03-26 | 清华大学 | Pulse circuit, pulse power supply and electromagnetic transmitting device |
| CN111082696B (en) * | 2018-10-18 | 2021-03-30 | 清华大学 | Pulse circuit, method of using the same, and pulse power supply |
| CN113691023A (en) * | 2021-07-30 | 2021-11-23 | 华电电力科学研究院有限公司 | Photovoltaic direct-current composite energy storage system and method based on temperature field control technology |
| CN113691023B (en) * | 2021-07-30 | 2023-08-29 | 华电电力科学研究院有限公司 | Photovoltaic direct-current composite energy storage system and method based on temperature field control technology |
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Application publication date: 20110921 |