CN109217669A - A kind of superconducting magnet circuit - Google Patents
A kind of superconducting magnet circuit Download PDFInfo
- Publication number
- CN109217669A CN109217669A CN201811185315.2A CN201811185315A CN109217669A CN 109217669 A CN109217669 A CN 109217669A CN 201811185315 A CN201811185315 A CN 201811185315A CN 109217669 A CN109217669 A CN 109217669A
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- Prior art keywords
- circuit
- power cell
- superconducting magnet
- diode
- power
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- 239000003990 capacitor Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a kind of superconducting magnet circuit, including the AC/DC rectification circuit for alternating current conversion direct current, and AC/DC rectification circuit output end is series at for adjusting the DC/DC circuit of direct current, the DC/DC circuit includes the first power cell IG1, second power cell IG2, diode D1, current sensor CS1, filter inductance L1, filter capacitor C1 and normally closed contactor Q1, electrode input end of the collector of the first power cell IG1 as DC/DC circuit, and it is connected with the negative pole end of diode D1, it can efficiently control and superconducting magnet is filled, control of discharge, it discharges simultaneously for superconducting magnet, it quenches using energy-feedback power grid mode, electric energy can be saved, for system is powered down, without increasing Additional Protection device, utilize circuit Own power device and diode continuousing flow release energy, and save additional cost and space arrangement, can effectively improve the protection to superconducting magnet, reduce the damage of circuit and superconducting magnet.
Description
Technical field
The present invention relates to circuit protection technical fields, and in particular to a kind of superconducting magnet circuit.
Background technique
Many advantages, such as superconducting magnet is with its low-power consumption, highfield, high stability is widely applied and electric power, industry, section
It grinds, the fields such as medical treatment；
But have strict demand to current rise rate and fall off rate, if charging current rate will lead to very much magnet quenching fastly,
And superconducting magnet energy is released as key difficulties, existing market technology when system is powered down, for superconducting magnet electric discharge, is quenched
Protection uses resistor box energy consumption mode with system is powered down, increases additional cost and space arrangement, while the mode that consumes energy in this way
Not environmentally；
So setting about the abnormal guarantors such as actual effect is controlled and quenched to the charge and discharge of superconducting magnet, system is powered down from superconducting magnet
Shield provides a kind of superconducting magnet circuit.
Summary of the invention
The present invention provides a kind of superconducting magnet circuit, for superconducting magnet electric discharge, quenches using energy-feedback power grid
Mode can save the electricity charge；For system is powered down, without increasing Additional Protection device, circuit own power device and two are utilized
Pole pipe afterflow releases energy, and saves additional cost and space arrangement.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of superconducting magnet circuit including the AC/DC rectification circuit for alternating current conversion direct current, and is series at
AC/DC rectification circuit output end is used to adjust the DC/DC circuit of direct current, and the DC/DC circuit includes the first power cell
IG1, the second power cell IG2, diode D1, current sensor CS1, filter inductance L1, filter capacitor C1 and normally closed contactor
Q1, in which:
Electrode input end of the collector of the first power cell IG1 as DC/DC circuit, and the negative pole end with diode D1
It is connected, the emitter of the first power cell IG1 is connected with the collector of the second power cell IG2, the first power list
The midpoint of first IG1 and the second power cell IG2 are connected with the first end of current sensor CS1, the current sensor CS1, filter
Wave inductance L1 and filter capacitor C1 are sequentially connected in series, and filter capacitor C1 is as the output end of DC/DC circuit, the second power list
The emitter of first IG2 is connected with the first end of normally closed contactor Q1, and as the negative input of DC/DC circuit, described normally closed
The second end of contactor Q1 is connected with the positive terminal of diode D1 and filter capacitor C1 respectively.
Further, the first power cell IG1 and the second power cell IG2 is model FF1400R12IP4
IGBT power module.
Further, collector maximum of the breakdown voltage of the diode D1 greater than the first power cell IG1 is passed through electricity
Pressure.
Further, the model EVR400-B of the normally closed contactor Q1.
Further, the working frequency of the filter capacitor C1 or capacitance are 500uF.
From the above technical scheme, the invention has the following beneficial effects: can efficiently control to fill superconducting magnet, put
Electric control, while being directed to superconducting magnet electric discharge, quenching using energy-feedback power grid mode, electric energy can be saved, is fallen for system
Electricity is released energy without increasing Additional Protection device using circuit own power device and diode continuousing flow, is saved additional
Cost and space arrangement can effectively improve the protection to superconducting magnet, reduce the damage of circuit original part and superconducting magnet.
Detailed description of the invention
Fig. 1 is integrated circuit block schematic illustration of the present invention；
Fig. 2 is DC/DC circuit diagram；
Fig. 3 is DC/DC circuit charge protection schematic diagram；
Fig. 4 is the first power cell IG1 conducting schematic in charge protector；
Fig. 5 is the second power cell IG2 conducting schematic in charge protector；
Fig. 6 is that DC/DC circuit discharging protects schematic diagram；
Fig. 7 is the first power cell IG1 conducting schematic in discharge protection circuit；
Fig. 8 is the second power cell IG2 conducting schematic in discharge protection circuit；
Fig. 9 is the DC/DC circuit protection structure schematic diagram of superconducting magnet power down.
Specific embodiment
A kind of superconducting magnet circuit preferred embodiment of the invention is described in detail with reference to the accompanying drawing.
As shown in Figs. 1-2, a kind of superconducting magnet circuit, including AC/DC rectification circuit and DC/DC circuit, AC/DC
The input terminal of rectification circuit connects alternating current circuit, and the input terminal of the output end connection DC/DC circuit of AC/DC rectification circuit utilizes
Alternating current circuit is converted into DC circuit by AC/DC rectification circuit, and by DC circuit provide with DC/DC circuit, while can root
According to actual needs, AC/DC rectification circuit and DC/DC circuit increase DSP control panel and full-color touch screen human-computer interaction interface, real
When display system operation state parameter and failure, user can pass through display screen setting need electric current and curent change speed
Rate；
Its DC/DC circuit includes the first power cell IG1, the second power cell IG2, diode D1, current sensor CS1, filter
Wave inductance L1, filter capacitor C1 and normally closed contactor Q1, in which:
Electrode input end of the collector of first power cell IG1 as DC/DC circuit, and the negative pole end phase with diode D1
Even, the emitter of the first power cell IG1 is connected with the collector of the second power cell IG2, the first power cell IG1 and second
The midpoint of power cell IG2 is connected with the first end of current sensor CS1, the first power cell IG1 and the second power cell IG2
It is the IGBT power module of model FF1400R12IP4；
Current sensor CS1, filter inductance L1 and filter capacitor C1 are sequentially connected in series, and filter capacitor C1 is as DC/DC circuit
The emitter of output end, the second power cell IG2 is connected with the first end of normally closed contactor Q1, and as the negative of DC/DC circuit
Pole input terminal, the second end of normally closed contactor Q1 is connected with the positive terminal of diode D1 and filter capacitor C1 respectively, normally closed to connect
The capacitance of the model EVR400-B of tentaculum Q1, filter capacitor C1 are 500uF；
As shown in Figures 3 and 4, it charges to superconducting magnet, when the first power cell IG1 is connected, the first power cell IG1
It is mutually to reissue waveguide to lead to the second power cell IG2, this process is electric current uphill process, and DC/DC circuit is adjusted to Buck decompression
Mode, the electrode input end and negative input of DC/DC circuit convey electric energy toward filter capacitor C1 input terminal, wherein diode D1
Breakdown voltage be passed through voltage greater than the collector maximum of the first power cell IG1, and then electric current can only flow into the first power list
The collector of first IG1, electric current passes through collector and base stage, and carries out increase electric current by emitter, causes electric current to rise, the first function
The input impedance of rate unit IG1 is big, and driving power is small, increases the ability of driving load；
Electric current is monitored using current sensor CS1, and then current signal is fed back into display panel in real time, by filtered electrical
Sense L1 is adjusted high-frequency current, and reduces the shake of high frequency voltage, finally carries out energy storage using filter capacitor C1 and discharges
Electric current is connected to load, and the purpose of filter capacitor is in order to reduce AC ripple ripple coefficient, promote efficiently smooth direct current
Output；
As shown in figure 5, being formed into a loop by normally closed contactor Q1 and DC circuit negative pole end, charge to load, to superconducting magnetic
After body is fully charged, current reflux closes the first power cell IG1, opens the second power cell IG2, and electric current flows through the second power
Unit IG2 makes the reversed afterflow of electric current, and feedback grid, reduces the loss of electric energy；
As shown in Figures 6 and 7, it discharges to superconducting magnet, when the first power cell IG1 is connected, this process is electric current decline
Process, the work of normally closed contactor Q1 is adjusted to off-state when electric discharge, and DC/DC circuit is Boost boosting mode, is put by load
Electricity electric current pass through diode D1 positive terminal, flow to the first power cell IG1 collector, and successively through over-current sensor CS1,
Filter inductance L1, filter capacitor C1 constitute freewheeling circuit；
As shown in figure 8, closing the first power cell IG1, the second power cell IG2 is opened, electric current flows through the second power cell IG2
Conducting, flows back to the electric current in freewheeling circuit, so that current reduction, while working as and detecting that output voltage is more than to quench
When voltage, this process is identical as discharge process, and DC/DC circuit is Boost boosting mode, declines electric current, and then to super
Magnetizer is protected；
As shown in figure 9, electric current is when superconducting magnet total system power down followed by filter capacitor C1, filter inductance L1, electric current
Sensor CS1, the second power cell IG2 collector, the second power cell IG2 emitter and normally closed contactor Q1 provide afterflow and return
Road, electric current slowly decline, and avoid the unexpected power down of system, damage to circuit components and superconducting magnet.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (5)
1. a kind of superconducting magnet circuit including the AC/DC rectification circuit for alternating current conversion direct current, and is series at
AC/DC rectification circuit output end is used to adjust the DC/DC circuit of direct current, it is characterised in that: the DC/DC circuit includes first
Power cell IG1, the second power cell IG2, diode D1, current sensor CS1, filter inductance L1, filter capacitor C1 and often
Close contactor Q1, in which:
Electrode input end of the collector of the first power cell IG1 as DC/DC circuit, and the negative pole end with diode D1
It is connected, the emitter of the first power cell IG1 is connected with the collector of the second power cell IG2, and the first power cell
The midpoint of IG1 and the second power cell IG2 are connected with the first end of current sensor CS1, the current sensor CS1, filtering
Inductance L1 and filter capacitor C1 are sequentially connected in series, and filter capacitor C1 is as the output end of DC/DC circuit, second power cell
The emitter of IG2 is connected with the first end of normally closed contactor Q1, and as the negative input of DC/DC circuit, described normally closed to connect
The second end of tentaculum Q1 is connected with the positive terminal of diode D1 and filter capacitor C1 respectively.
2. a kind of superconducting magnet circuit according to claim 1, it is characterised in that: the first power cell IG1
It is the IGBT power module of model FF1400R12IP4 with the second power cell IG2.
3. a kind of superconducting magnet circuit according to claim 1, it is characterised in that: the breakdown potential of the diode D1
Collector maximum of the pressure greater than the first power cell IG1 is passed through voltage.
4. a kind of superconducting magnet circuit according to claim 1, it is characterised in that: the type of the normally closed contactor Q1
Number be EVR400-B.
5. a kind of superconducting magnet circuit according to claim 1, it is characterised in that: the capacitor of the filter capacitor C1
Capacity is 500uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811185315.2A CN109217669B (en) | 2018-10-11 | 2018-10-11 | Superconducting magnet power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811185315.2A CN109217669B (en) | 2018-10-11 | 2018-10-11 | Superconducting magnet power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109217669A true CN109217669A (en) | 2019-01-15 |
| CN109217669B CN109217669B (en) | 2024-03-12 |
Family
ID=64979765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811185315.2A Active CN109217669B (en) | 2018-10-11 | 2018-10-11 | Superconducting magnet power supply circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN109217669B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579904A (en) * | 2020-05-18 | 2020-08-25 | 中国电力科学研究院有限公司 | Quench detection circuit and method for superconducting transformer winding |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0884479A (en) * | 1994-09-12 | 1996-03-26 | Hitachi Ltd | Safety unit for switching circuit |
| US20080169784A1 (en) * | 2007-01-15 | 2008-07-17 | Chen-Yuen Fan | Solar power system |
| CN202503343U (en) * | 2012-03-23 | 2012-10-24 | 漳州耐欧立斯科技有限责任公司 | System power supply control apparatus of off-grid wind charging controller |
| US9837896B1 (en) * | 2016-06-07 | 2017-12-05 | Smk Corporation | DC-to-DC converter |
| CN107528311A (en) * | 2017-10-20 | 2017-12-29 | 陕西航空电气有限责任公司 | A kind of circuit for improving reliability in HVDC brushless motor controller power process |
| CN208904890U (en) * | 2018-10-11 | 2019-05-24 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
-
2018
- 2018-10-11 CN CN201811185315.2A patent/CN109217669B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0884479A (en) * | 1994-09-12 | 1996-03-26 | Hitachi Ltd | Safety unit for switching circuit |
| US20080169784A1 (en) * | 2007-01-15 | 2008-07-17 | Chen-Yuen Fan | Solar power system |
| CN202503343U (en) * | 2012-03-23 | 2012-10-24 | 漳州耐欧立斯科技有限责任公司 | System power supply control apparatus of off-grid wind charging controller |
| US9837896B1 (en) * | 2016-06-07 | 2017-12-05 | Smk Corporation | DC-to-DC converter |
| CN107528311A (en) * | 2017-10-20 | 2017-12-29 | 陕西航空电气有限责任公司 | A kind of circuit for improving reliability in HVDC brushless motor controller power process |
| CN208904890U (en) * | 2018-10-11 | 2019-05-24 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
Non-Patent Citations (1)
| Title |
|---|
| 罗秀文等: "超导磁体供电电源的控制", 《电工电能新技术》, no. 3, 31 March 1993 (1993-03-31), pages 42 - 46 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579904A (en) * | 2020-05-18 | 2020-08-25 | 中国电力科学研究院有限公司 | Quench detection circuit and method for superconducting transformer winding |
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| CN109217669B (en) | 2024-03-12 |
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| CB02 | Change of applicant information |
Address after: 230088 Shanghai Pu Industrial Park, 4715 Wangjiangxi Road, Hefei High-tech Zone, Anhui Province Applicant after: Hefei Kewei Power System Co.,Ltd. Address before: 230088 Shanghai Pu Industrial Park, 4715 Wangjiangxi Road, Hefei High-tech Zone, Anhui Province Applicant before: HEFEI KEWELL POWER SYSTEM CO.,LTD. |
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Address after: 230088 Building 2, Hupu Industrial Park, No. 4715, Wangjiang West Road, hi tech Zone, Hefei City, Anhui Province Applicant after: Cowell Technology Co.,Ltd. Address before: 230088 Building 2, Hupu Industrial Park, No. 4715, Wangjiang West Road, hi tech Zone, Hefei City, Anhui Province Applicant before: Hefei Kewei Power System Co.,Ltd. |
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