CN101387694A - Pulse magnetic field generating device - Google Patents
Pulse magnetic field generating device Download PDFInfo
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- CN101387694A CN101387694A CNA2008100482314A CN200810048231A CN101387694A CN 101387694 A CN101387694 A CN 101387694A CN A2008100482314 A CNA2008100482314 A CN A2008100482314A CN 200810048231 A CN200810048231 A CN 200810048231A CN 101387694 A CN101387694 A CN 101387694A
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Abstract
A pulse magnetic field generator belongs to the pulse strong magnetic field devices, for generating high-quality flattened magnetic field waveform, realizing good magnetic field stability and low system production cost, to satisfy the demands of scientific tests such as nuclear magnetic resonance and the like, wherein a capacitor group is serially connected with a thyristor main switch, a decoupling transformer primary side and an internal coil, to form a main magnetic loop; a flywheel diode is parallel connected with a capacitor group to protect the capacitor group; a pulse generator power supply is serially connected with a decoupling transformer secondary side and an external coil in turn via a first breaker switch to form an auxiliary magnetic field loop; the resistor is serially connected with a diode to be serially connected with the decoupling transformer secondary side and the external coil to form an auxiliary magnetic field flywheel loop; a controllable direct current power supply is serially connected with the decoupling transformer secondary side and the external coil in turn via a second breaker switch to form a magnetic field compensation loop. The invention can realize a magnetic field with fast rising edge and high top stability, and can reduce the production cost of the whole system.
Description
Technical field
The invention belongs to the impulse magnetic field device, particularly a kind of device that produces the pulse flat-top magnetic field of high stability.
Background technology
High-intensity magnetic field is important scientific experiment platform for modern scientific research provides extreme experiment condition.High-intensity magnetic field is divided into impulse magnetic field and stable state high-intensity magnetic field.Impulse magnetic field can provide more high-intensity magnetic field, more can satisfy the requirement of some scientific experiment to high high-intensity magnetic field.But become when common pulsed magnetic field is, and some scientific experiment,, require in a period of time, to have more stable magnetic field as nuclear magnetic resonance (NMR) etc.For this reason, scientists has proposed pulse flat-top magnetic field, wishes that its magnetic induction density is higher and can stablize in a period of time.
American National high-intensity magnetic field laboratory (NHMFL) impulse generator is powered to the triple coil magnet simultaneously by three groups of rectifiers, the flat-top magnetic field of having realized 60T/100ms.As shown in Figure 1, the impulse generator capacity is 1430MVA, can discharge the electric energy of 650MJ.Earlier drag impulse generator to rated speed 1800rpm, electric energy is converted into the mechanical energy storage by motive power.Impulse generator is operated in generating state then, and mechanical energy is converted into electric energy.Impulse generator is powered to magnet by bus and five 64MW (87.6MVA) power transfer module of 24kV.The 12 pulse controlled rectification bridges that each power transfer module transformer and rectifier bridge are formed.RS is a reverser among Fig. 1, to satisfy the FR of scientific experiment requirement.
As Fig. 1 and Fig. 2, magnet is the hybrid magnet that is made of three groups of coils: first group has the 1-5 coil, is made up of the 6-7 coil for second group, and the 3rd group has the 8-9 coil.At first outermost the 3rd group of coil power supply produced 14T magnetic field, the energy that it needs is bigger, thus use two each and every one power transfer module to power, among its field waveform such as Fig. 3 " coil groups 3 "; Then, second group of coil power supply produced 18T magnetic field, the energy that it needs is also bigger, uses two each and every one power transfer module to power, among its field waveform such as Fig. 3 " coil groups 2 "; At last, first group of coil power supply produced 28T magnetic field, it is positioned at internal layer, and the energy that needs is less, thus only use a power transfer module power supply, among its field waveform such as Fig. 3 " coil groups 1 ".The pulse flat-top magnetic field of the stackable generation of final three groups of coils 60T/100ms.
This scheme needs jumbo impulse generator, 5 groups of high-power 12 impulse commutation bridges, also needs to make the pulse magnet that 9 coils are formed, and overall cost is very high.The total pulsewidth in magnetic field reaches 2 seconds in addition, and the magnetic field of 60T has only the time of 100ms, and rise time and fall time are all very long, and the flat part ripple is also bigger, and generally speaking, waveform quality is not high.
Summary of the invention
The present invention proposes a kind of pulse magnetic field generating device, and purpose is to produce high-quality flat-top field waveform, and good magnetic field stability and relatively low system cost are to satisfy the requirement of scientific experiments such as nuclear magnetic resonance.
Pulse magnetic field generating device of the present invention comprises magnet, direct supply and decoupling transformer, it is characterized in that:
Described magnet is made up of interior loop and exterior loop; Described direct supply comprises capacitor group, impulse generator power supply and controllable direct current power supply;
The capacitor group is connected with thyristor main switch, decoupling transformer primary side, interior loop successively and is constituted the main field circuit; Fly-wheel diode is in parallel with the capacitor group, the protective condenser group;
The impulse generator power supply is connected with decoupling transformer secondary side, exterior loop successively by first disconnect and is constituted the auxiliary field loop; Resistance and diode series connection, connecting with decoupling transformer secondary side, exterior loop successively constitutes the auxiliary field continuous current circuit again;
Controllable direct current power supply is connected with decoupling transformer secondary side, exterior loop successively by second disconnect and is constituted the field compensation loop.
Described pulse magnetic field generating device is characterized in that:
Described impulse generator power supply is made up of main circuit and control section, and described main circuit comprises impulse generator, motor switch, 12 pulse wave rectifier transformers and the 12 pulse wave rectifier bridges of electric signal connection successively;
Described control section is composed in series by PID controller and error comparator, the stack field signal in main and auxiliary magnetic field and reference signal are by error comparator relatively, send into the PID controller, obtain the trigger angle control signal, deliver to described 12 pulse wave rectifier bridges and control.
Described pulse magnetic field generating device is characterized in that:
Described controllable direct current power supply is made up of main circuit and control section, and described main circuit comprises that the three-phase of electric signal connection is not controlled rectifier bridge, input filter, IGBT inversion full-bridge, high-frequency transformer, high-frequency rectification bridge and output filter successively;
Described control section is composed in series by error comparator, PID controller and IGBT driver, the stack field signal in main and auxiliary magnetic field and reference signal are by error comparator relatively, send into the PID controller, obtain the IGBT control signal, after described IGBT driver amplification, deliver to described IGBT inversion full-bridge and control.
The present invention has used by interior loop and exterior loop and has constituted magnet realization pulse flat-top magnetic field, has also used decoupling transformer to offset influencing each other between two coils; Use the capacitor group to produce main field, so the ascending velocity of main field is fast as high-voltage pulse power source; Use the power supply of controlled high capacity impulse generator power supply, can guarantee that stack magnetic field reaches the pulse flat-top magnetic field of target as auxiliary field; Adopt controllable direct current power supply power supply compensated pulse flat-top magnetic field by way of compensation, improve the degree of stability (ripple level) in pulse flat-top magnetic field.
The impulse magnetic field device that the present invention proposes can be realized the magnetic field that rising edge is fast, the top degree of stability is high, can significantly reduce the cost of total system simultaneously.
Description of drawings
Fig. 1 is the circuit diagram that the flat-top magnetic field device is realized in American National high-intensity magnetic field laboratory;
Mark among the figure: magnetizing exciter E, isolating switch Br, impulse generator GE; limiting protector F; driver D, reactor X, power conversion module PM; continued flow switch CB; phase-veversal switch RS, disconnector S, 12 pulse wave rectifier transformer TM; 12 pulse wave rectifier bridge TB, the first magnet coil group G1 comprise that 5 coils, the second magnet coil group G2 comprise that 2 coils, the 3rd magnet coil group G3 comprise 2 coils.
Fig. 2 is the 60T/100ms flat-top field waveform that the device of Fig. 1 is realized;
Mark among the figure: coil groups G1 (outermost layer) produces field waveform 1, and coil groups G2 produces field waveform 2, and the stack magnetic field that coil groups G3 (innermost layer) produces 3, three groups of coils of field waveform is waveform 4.
Fig. 3 is a principle of the invention circuit diagram;
Mark among the figure: sustained diode
1, capacitor group C
1, impulse generator power supply G, controllable direct current power supply V, the first disconnect S
1, the second disconnect S
2, thyristor main switch T
1, diode D
2, resistance R
2, decoupling transformer M, interior loop L
1, L flows through
1Current i
1, exterior loop L
2, L flows through
2Current i
2, inner-outer coil L
1, L
2Between mutual inductance K.
Fig. 4 is the detail drawing of impulse generator power supply G among Fig. 3;
Mark among the figure: impulse generator G
E, motor switch S, 12 pulse wave rectifier transformer TM, 12 pulse wave rectifier bridge TB, the first disconnect S
1Record stack field signal B, reference signal B
RefError comparator Er, PID controller PID, trigger angle signal a.
Fig. 5 is the detail drawing of controllable direct current power supply V among Fig. 3;
Mark among the figure: electric network source AC 380V, three-phase is not controlled rectifier bridge DQ
1, input filter LB
1, IGBT inversion full-bridge GQ, high-frequency transformer T, high-frequency rectification bridge DQ
2, output filter LB
2, the second disconnect S
2Record magnetic induction density B, target pulse flat-top magnetic induction density B
RefError comparator Er, PID controller PID, the driver Dr of IGBT switch.
The pulse flat-top field waveform synoptic diagram that Fig. 6 realizes for the present invention;
Mark among the figure: main field B
1, auxiliary field B
2, the stack magnetic field B
0
Embodiment
The present invention is further described below in conjunction with accompanying drawing.
As shown in Figure 3, among the present invention, capacitor group C
1Successively with thyristor main switch T
1, decoupling transformer M primary side, interior loop L
1Series connection constitutes the main field circuit; Sustained diode
1With capacitor group C
1Parallel connection, protective condenser group C
1
Impulse generator power supply G is by the first disconnect S
1Successively with decoupling transformer M secondary side, exterior loop L
2Series connection constitutes the auxiliary field loop; Resistance R
2With diode D
2The series connection, more successively with decoupling transformer M secondary side, exterior loop L
2Series connection constitutes the auxiliary field continuous current circuit;
Controllable direct current power supply V is by the second disconnect S
2Successively with decoupling transformer M secondary side, exterior loop L
2Series connection constitutes the field compensation loop.
Interior loop L
1Be main magnet, main field is provided; Exterior loop L
2Be auxilliary magnet, auxiliary field is provided.Interior loop L
1By capacitor group C
1Power supply, the field waveform that it provides is " B among Fig. 6
1"; Exterior loop L
2By impulse generator power supply G power supply, provide " B among field waveform such as Fig. 6
2".Main field is not controlled, and auxiliary field comes output voltage to realize " B among the result of major-minor magnetic field superposition such as Fig. 6 by the trigger angle of 12 pulse wave rectifier bridges among the FEEDBACK CONTROL impulse generator power supply G
0".
Owing to have mutual inductance K in the inner-outer coil, added decoupling transformer M in the circuit to offset influencing each other between inner-outer coil.Also introduce a controllable direct current power supply V in the circuit, its effect is a compensation top ripple, improves the degree of stability in magnetic field, also is to adopt FEEDBACK CONTROL.
As shown in Figure 4, the impulse generator power supply is made up of main circuit and control section, and main circuit comprises the impulse generator G of electric signal connection successively
E, motor switch S, 12 pulse wave rectifier transformer TM and 12 pulse wave rectifier bridge TB;
Control section is composed in series by PID controller PID and error comparator Er, the stack field signal B in main and auxiliary magnetic field and reference signal B
RefBy error comparator relatively, send into the PID controller, obtain trigger angle signal a, deliver to described 12 pulse wave rectifier bridges and control.
As shown in Figure 5, controllable direct current power supply V is made up of main circuit and control section, and main circuit comprises that the three-phase of electric signal connection is not controlled rectifier bridge DQ successively
1, input filter LB
1, IGBT inversion full-bridge GQ, high-frequency transformer T, high-frequency rectification bridge DQ
2With output filter LB
2
Control section is composed in series by error comparator Er, PID controller PID and IGBT driver Dr, the stack field signal B in main and auxiliary magnetic field and reference signal B
RefBy error comparator relatively, send into the PID controller, obtain the IGBT control signal, after amplifying by described IGBT driver Dr, deliver to described IGBT inversion full-bridge GQ and control.
To realize that magnetic induction intensity is 40T, the magnetic field of flat-top width 50ms is example, calculates each component parameters of system:
Interior loop L
1: internal orifice dimension 20mm, overall diameter 120mm, height 200mm.Adopt that fill factor, curve factor is 0.8, the cross section is 5mm * 8mm flat type copper wire coiling, be divided into 10 layers, every layer 25 circle.Coil inductance is 863.5 μ H, and coil resistance is 3.7mouh during 77K, and resistance was 14m Ω after discharge was finished.
Exterior loop L
2Adopt the copper sheet coiling of 1.3mm * 200mm (wherein the thick 1mm of copper, thick 0.3mm insulate), exterior loop L
2Parcel interior loop L
1So, exterior loop L
2Internal orifice dimension is 120mm, altogether around 30 layers, and exterior loop L
2Overall diameter is 198mm.Exterior loop L
2Inductance is 66.3mH, and 77K resistance is 0.16m Ω, and resistance was 0.17m Ω after discharge was finished.Mutual inductance between inner-outer coil is 148.4 μ H.Inner-outer coil all immerses in the liquid nitrogen (temperature is 77K).
For offsetting the mutual inductance of 148.4uH between inner-outer coil, the mutual inductance of decoupling transformer M first and second side should be-148.4uH ("-" expression mutual inductance direction is opposite with the inner-outer coil mutual inductance).
3.2mF capacitor group C
1Discharge after charging to 15kV, at interior loop L
1Waveform B among middle generation Fig. 6
1, the magnetic field peak value is 40T.Control system detects B
1, work as B
1When reaching peak value, capacity is that the impulse generator power supply G of 500V/160kA devotes oneself to work; The control section of impulse generator power supply G is gathered inner-outer coil superimposed field signal B, and the output voltage of FEEDBACK CONTROL impulse generator makes waveform B among auxiliary field waveform such as Fig. 6
2Last superimposed field B
0Reach the requirement of pulse flat-top.
Claims (3)
1. a pulse magnetic field generating device comprises magnet, direct supply and decoupling transformer, it is characterized in that:
Described magnet is made up of interior loop and exterior loop; Described direct supply comprises capacitor group, impulse generator power supply and controllable direct current power supply;
The capacitor group is connected with thyristor main switch, decoupling transformer primary side, interior loop successively and is constituted the main field circuit; Fly-wheel diode is in parallel with the capacitor group, the protective condenser group;
The impulse generator power supply is connected with decoupling transformer secondary side, exterior loop successively by first disconnect and is constituted the auxiliary field loop; Resistance and diode series connection, connecting with decoupling transformer secondary side, exterior loop successively constitutes the auxiliary field continuous current circuit again;
Controllable direct current power supply is connected with decoupling transformer secondary side, exterior loop successively by second disconnect and is constituted the field compensation loop.
2. pulse magnetic field generating device as claimed in claim 1 is characterized in that:
Described impulse generator power supply is made up of main circuit and control section, and described main circuit comprises impulse generator, motor switch, 12 pulse wave rectifier transformers and the 12 pulse wave rectifier bridges of electric signal connection successively;
Described control section is composed in series by PID controller and error comparator, the stack field signal in main and auxiliary magnetic field and reference signal are by error comparator relatively, send into the PID controller, obtain the trigger angle control signal, deliver to described 12 pulse wave rectifier bridges and control.
3. pulse magnetic field generating device as claimed in claim 1 or 2 is characterized in that:
Described controllable direct current power supply is made up of main circuit and control section, and described main circuit comprises that the three-phase of electric signal connection is not controlled rectifier bridge, input filter, IGBT inversion full-bridge, high-frequency transformer, high-frequency rectification bridge and output filter successively;
Described control section is composed in series by error comparator, PID controller and IGBT driver, the stack field signal in main and auxiliary magnetic field and reference signal are by error comparator relatively, send into the PID controller, obtain the IGBT control signal, after described IGBT driver amplification, deliver to described IGBT inversion full-bridge and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100482314A CN101387694B (en) | 2008-06-27 | 2008-06-27 | Pulse magnetic field generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100482314A CN101387694B (en) | 2008-06-27 | 2008-06-27 | Pulse magnetic field generating device |
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| Publication Number | Publication Date |
|---|---|
| CN101387694A true CN101387694A (en) | 2009-03-18 |
| CN101387694B CN101387694B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100482314A Expired - Fee Related CN101387694B (en) | 2008-06-27 | 2008-06-27 | Pulse magnetic field generating device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134370A (en) * | 1991-01-08 | 1992-07-28 | Northwest Marine Technology Inc. | Apparatus for the detection of magnetic tags |
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| JP3742998B2 (en) * | 1997-03-26 | 2006-02-08 | 住友電気工業株式会社 | Method and apparatus for detecting magnetic substance concentration |
| JP2002243817A (en) * | 2001-02-21 | 2002-08-28 | Hitachi Ltd | Detection coil-integrated gradiometer and magnetic field measuring instrument |
| GB0424717D0 (en) * | 2004-11-09 | 2004-12-08 | Metis Instr & Equipment N V | Sensor for measuring magnetic flux |
-
2008
- 2008-06-27 CN CN2008100482314A patent/CN101387694B/en not_active Expired - Fee Related
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