CN109347341A - It is a kind of with the ultrastability Switching Power Supply for quenching defencive function - Google Patents
It is a kind of with the ultrastability Switching Power Supply for quenching defencive function Download PDFInfo
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- CN109347341A CN109347341A CN201811342157.7A CN201811342157A CN109347341A CN 109347341 A CN109347341 A CN 109347341A CN 201811342157 A CN201811342157 A CN 201811342157A CN 109347341 A CN109347341 A CN 109347341A
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- 238000010791 quenching Methods 0.000 title claims abstract description 55
- 230000000171 quenching effect Effects 0.000 title claims abstract description 30
- 230000006641 stabilisation Effects 0.000 claims abstract description 30
- 238000011105 stabilization Methods 0.000 claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims description 32
- 230000001681 protective effect Effects 0.000 claims description 16
- 230000005347 demagnetization Effects 0.000 claims description 4
- 238000011897 real-time detection Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
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- 239000004020 conductor Substances 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 102000012698 DDB1 Human genes 0.000 description 1
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Classifications
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/001—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for superconducting apparatus, e.g. coils, lines, machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
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- 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
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- 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
- H02M3/1584—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 with a plurality of power processing stages connected in parallel
-
- 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
- H02M3/1584—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 with a plurality of power processing stages connected in parallel
- H02M3/1586—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 with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention is a kind of with the ultrastability Switching Power Supply for quenching defencive function; belong to superconducting accelerator field; it include: input rectifying filter circuit; digitize current stabilization circuit; output filter circuit; control circuit; the input rectifying filter circuit is connect with digitlization current stabilization circuit input terminal; the output end of digitlization current stabilization circuit is connected with output filter circuit input terminal; control circuit input terminal connects with the input terminal alternating current inlet wire of input rectifying filter circuit, and output end is connected with digitlization current stabilization circuit；It it is characterized by also including protection circuit is quenched, is connected to after output filter circuit, quenches protection Auxiliary Control Element connection and quench protection circuit.Technical solution provided by the invention needs high-power, ultrastability application suitable for superconducting accelerator etc., has many advantages, such as that stability is high, substantially reduces the probability that superconducting accelerator superconducting coil is damaged when quenching.
Description
Technical field
The present invention relates to a kind of switch power technologies, and in particular to a kind of to open with the ultrastability for quenching defencive function
Powered-down source belongs to superconducting accelerator field.
Background technique
Superconducting cyclotron is the one kind graduallyd mature after the 1960s with the development of superconductor technology
Promising novel accelerator.Very strong accelerating field can be generated under the microwave power of very little using Superconducting cavity LINAC；Benefit
Powerful confining magnetic field can be then generated under the exciting power of very little with superconducting magnet, the two can all reduce accelerator significantly
Size reduces the power consumption of accelerator, and making superconducting accelerator economically and technically has huge superiority.Stablize fortune
Superconducting magnet in row may be rubbed by various thermal agitations, these thermal agitations from electromagnetic force lower conductor at any time
Wiping moving heating, the A.C.power loss of superconductor, conductor tab fever, coil inhomogeneous cooling is even and high current Plasma disruption is super
The vortex generated on magnetizer.In addition, the generation for the problems such as operating current overrate, current ripples disturb, may all draw
Play magnet quenching.If superconducting coil does not quench protection system, the superconducting coil that high current flows through non-superconducting state at this time can be made
A large amount of Joule heats are generated at coil, coil is brought rapidly up and damages；The voltage in coil increases rapidly simultaneously, has breakdown coil exhausted
The risk of edge layer.Therefore, usually all superconducting coil can be protected using protection system is quenched.
And traditional switching power circuit existing defects in terms of realizing low ripple, ultrastability.It is directly used in superconduction
Exist in accelerator and induce the risk that quenches of superconducting coil, and cause quench after can not carry out quenching protection.
Summary of the invention
It is an object of the invention in view of the deficiencies in the prior art, provide a kind of high-power, ultrastability, and
And with quench protect it is a kind of with the ultrastability Switching Power Supply for quenching defencive function, comprising: input rectifying filter circuit, number
Word current stabilization circuit, output filter circuit, control circuit, the input rectifying filter circuit and digitlization current stabilization circuit input terminal
Connection, the output end for digitizing current stabilization circuit are connected with output filter circuit input terminal, control circuit input terminal and input rectifying
The input terminal alternating current inlet wire of filter circuit connects, and output end is connected with digitlization current stabilization circuit；It is characterized by also including mistakes
Super protection circuit, is connected to after output filter circuit, quenches protection Auxiliary Control Element control and quenches protection circuit.
Using quenching protection circuit, excitation, demagnetization when normal work for superconducting coil, and real-time detection superconducting coil
Between electric signal, after detecting that superconducting coil quenches quick closedown Switching Power Supply, disconnect quench protective switch.
Further, protection circuit is quenched, is formed by letting out energy module and two tandem taps, the one end for letting out energy module connects two
The node of switch room, the other end are connect with output filter circuit output end, and one end of tandem tap connects output filter circuit
Output end, the other end connect superconducting coil.
Energy module, quick release of energy when normally demagnetizing for superconducting coil are let out using above-mentioned quench in protection circuit.
Further, in one protective resistance of superconducting coil loong shunt.
Using protective resistance, for when quenching portion of energy discharged by outer protective resistance.
Further, one end connection superconducting coil of protection Auxiliary Control Element is quenched, the other end connects two switches.
Using protection Auxiliary Control Element is quenched by the information of acquisition superconducting coil, the opening and closing of two switches is controlled, from
And protection circuit is quenched, its excitation to superconducting coil, demagnetization is controlled, and can detecte superconducting coil and whether quench, sent out
It is raw quench after by energy quick release that superconducting coil stores and can be effectively protected.
Further, the input rectifying filter circuit includes 24 pulse wave rectifier transformers and input filter circuit,
The 24 pulse wave rectifier transformers are composed in series by two groups of transformers in output end, and every group of transformer separately includes once
Lateral coil and two second siding rings；The second siding ring output of two groups of transformers is connect into three-phase bridge rectifier circuit respectively,
The output series connection of tetra- tunnel Bing Jiang, i.e., be rectified into direct current for input three-phase alternating current；The output end of 24 pulse wave rectifier transformers
It is connect with the input terminal of input filter circuit, input filter circuit is made of two-stage LC filter circuit.
It is filtered using 24 pulse wave rectifiers of input and two-stage LC, solves the problems, such as that traditional switch power supply ripple is higher,
More improve reliability.
Further, the collector parallel connection of four IGBT of multi-tube phase dislocation parallel connection chopping connects in the digitlization current stabilization circuit
It is connected together, links together per the output of chopper circuit all the way, constitute four road chopper circuits parallel connections, first capacitor and the second electricity
Appearance is connected in digitlization current stabilization circuit input terminal in parallel；The first end of first inductance and the positive output end of parallel connection chopping route connect
It connects, the first end of the second inductance is connect with the negative output terminal of parallel connection chopping route, in the second end and the second inductance of the first inductance
Second end between connect third capacitor, the second end of the first inductance connect with the first end of the 4th capacitor, the of the 4th capacitor
Two ends ground connection；The second end of second inductance is connect with the second end of the 5th capacitor, the first end ground connection of the 5th capacitor.
It is in parallel using four road chopper circuits, so that the DC current of output is more preferably steady.
Further, the control circuit uses full-digital control, including power-supply controller of electric and data collector, defeated
Outlet obtains feedback signal by DC current sensor, generates and provides the reference signal of ultrastability.
Using the control circuit of total digitalization, DC current sensor is exported by data acquisition and obtains feedback signal to number
Word current stabilization circuit, to the reference signal of digitlization one stability of current stabilization circuit, so that the DC current of output is more preferably steady.
Beneficial effects of the present invention are as follows: switching power circuit provided by the present invention is using 24 pulse wave rectifiers of input
It is filtered with two-stage LC, in addition multi-tube phase dislocation wave scheme is used, so that output ripple reaches 1X10-5.Tradition is not only solved in this way
The higher problem of Switching Power Supply ripple, more improves reliability.It is provided with simultaneously and quenches protection system, both can control it to super
The excitation of loop, demagnetization, and can detecte whether superconducting coil quenches, superconducting coil can be stored after quenching
Energy quick release and be effectively protected.
Detailed description of the invention
Fig. 1 is a kind of switching power circuit principle frame based on 24 pulse wave rectifiers Yu multi-tube phase dislocation copped wave of the present invention
Figure；
Fig. 2 is input rectifying filter circuit figure in embodiment；
Fig. 3 is that current stabilization and output filter circuit figure are digitized in embodiment.
Description of symbols: QF- breaker；KM, KM1- contactor；EMI- EMI FILTER；DCCT- DC current
Sensor；T1, T2- transformer；C1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C13,C14,C15,C16,C17,C18,
C19, C20- capacitor；L1-1, L1-2, L2-1, L2-2, L3-1, L3-2, L5-1, L5-2- inductance；R4- resistance；SK1,SK2,
SK3,SK4-IGBT；VD1- diode.
Fig. 4 is to quench protection system diagram in embodiment.
Fig. 5 is electric operation control circuit figure in embodiment；
Description of symbols: DBB1 is power control board, and DBB2 is data acquisition board, DBB3 protection board.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, it is provided by the present invention a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is based on
24 pulse wave rectifiers and multi-tube phase dislocation copped wave topological structure, and with the switch power supply system structure for quenching defencive function, packet
It includes:
(1) input rectifying filter circuit ZL is used to input three-phase alternating current and is rectified into a manner of 24 pulse wave rectifiers directly
Galvanic electricity, and low-frequency noise is filtered out, the current rectifying and wave filtering circuit is connect with digitlization current stabilization circuit WL input terminal；
Described its core of input rectifying filter circuit is 24 pulse wave rectifier transformers, and the transformer is by two transformer T1
It is composed in series with T2 in output end, wherein T1 includes first siding ring and two second siding rings；T2 includes a side line
Circle and two second siding rings.The second siding ring output of two groups of transformers is connect into three-phase bridge rectifier circuit respectively, and will
The output series connection of four tunnels, i.e., be rectified into direct current for input three-phase alternating current.24 pulse wave rectifier transformer output ends and input
The connection of filter circuit input terminal, input filter circuit are made of two-stage LC filter circuit, can effectively reduce the low frequency line of direct current
Wave.
(2) current stabilization circuit WL is digitized, passes through multi-tube phase dislocation copped wave for the direct current after rectifying, forms output electric current
Stable DC.The partial circuit is using multi-tube phase dislocation parallel connection chopping topology, i.e. four IGBT(SK1, SK2, SK3, SK4) simultaneously
Connection, input terminal are connected with the two-stage LC filter circuit output end of current rectifying and wave filtering circuit ZL.The gate pole and control circuit KZ of IGBT
Pwm signal output end be connected.
(3) output filter circuit LB, for the high-frequency noise for digitizing the direct current that current stabilization circuit WL is generated to be curbed,
It is located between digitlization current stabilization circuit WL and output end.
(4) protection circuit QP is quenched, is connected to after output filter circuit LB, is mainly used for fast when superconducting coil normally demagnetizes
Speed releases energy；Portion of energy is discharged by outer protective resistance when quenching.
(5) control circuit KZ, control circuit control chopping frequency for generating pwm signal.The control circuit,
Input connects with current rectifying and wave filtering circuit ZL input terminal alternating current inlet wire, the gate pole of the IGBT of output end and digitlization current stabilization circuit WL
It is connected.
(6) protection Auxiliary Control Element AC is quenched, for quenching the detection of signal, and quick closedown Switching Power Supply, disconnection
Quench protective switch.It is described quench protection Auxiliary Control Element AC input and reserve interface and quench signal lines with outside be connected,
Output control quenches protective switch K1 and K2.
As shown in Fig. 2, in the input rectifying filter circuit ZL, four road and bridge formula rectification module N1, N2, N3, N4 series connection,
The negative terminal of N1 and the anode of N2 connect, and the negative terminal of N3 and the anode of N4 connect, and the anode of N1 is connect with the first end of capacitor C1, N2
Negative terminal connect with capacitor C2 second end, the anode of N3 is connect with the first end of capacitor C3, the negative terminal of N4 and capacitor C4 second end
Connection.In two-stage LC filter circuit, the first end of the inductance L1-1 of first order LC filter circuit is connect with capacitor C1 first end, electricity
The first end of sense L1-2 is connect with the second end of capacitor C2, and the second end of inductance L1-2 is connect with the second end of inductance L2-1, electricity
The first end of sense L2-1 is connect with the first end of capacitor C3, and the first end of inductance L2-2 is connect with the second end of capacitor C4；Capacitor
C5, C6, C7, C8 are connected in parallel between inductance L1-1 first end and inductance L2-2 second end, wherein the anode of capacitor C5, C7 with
The connection of inductance L1-1 first end, negative terminal are connect with inductance L2-2 second end.The first of the inductance L3-1 of second pole LC filter circuit
End is connect with the second end of inductance L1-1, and the first end of inductance L3-2 is connect with the second end of inductance L2-2, and capacitor C9 and C10 are simultaneously
It is associated between the second end of inductance L3-1 and the second end of inductance L3-2, resistance R4 is connected in parallel on the second end and inductance of inductance L3-1
Between the second end of L3-2.
As shown in figure 3, four IGBT(SK1, SK2 of multi-tube phase dislocation parallel connection chopping in digitlization current stabilization circuit WL, SK3,
SK4) collector is connected in parallel, and is linked together per the output of chopper circuit all the way, and four road chopper circuits parallel connections are constituted,
Capacitor C13, C14 are connected in digitlization current stabilization circuit input terminal in parallel.The first end of inductance L5-1 and the first end of inductance L5-2
Circuit is output filter circuit later.The first end of inductance L5-1 is connect with the positive output end of parallel connection chopping route, inductance L5-2
First end connect with the negative output terminal of parallel connection chopping route, capacitor C15 is connected in the second end and inductance of inductance L5-1 in parallel
Between the second end of L5-2.The first end of capacitor C16 is connect with inductance L5-1 second end, second end ground connection；The second of capacitor C17
End is connect with inductance L5-2 second end, first end ground connection.L6, L7 are choke coil, and C18 is attempted by between C16, C17, the of C18
The connection of the first end of one end and C16, the second end of C18 and the second end of C17 connect.VD1 is diode, anode and C18 the
The connection of two ends, negative terminal are connect with C18 first end.C19 is in parallel with VD1 after being connected in series with C20, and C19 first end and VD1 negative terminal connect
It connects, second end connect ground connection with C20 first end, and C20 second end is connect with VD1 anode.
As shown in figure 4, quenching protection system includes quenching protection circuit QP and quenching to protect Auxiliary Control Element AC.It quenches
Protection circuit QP is connected with digitlization current stabilization circuit WL, wherein quenching one end and the number for quenching protective switch K1 in protection circuit QP
Word current stabilization circuit WL is connected, quench the other end of protective switch K1 with let out can switch K2 one end and let out one end phase of energy module
Even, let out can the other end of switch K2 be connected with outer protective resistance R1, let out energy module the other end and outer protective resistance R1 it is another
End is connected, and is connected to the other end of digitlization current stabilization circuit WL.Protection Auxiliary Control Element AC is quenched, including quenches signal detection
Unit and quench control unit.The detecting signal unit that quenches by comparing the electric signal between upper and lower superconducting coil tap, and
Give quench control unit judgement, when be more than certain limit after think to quench, quench control unit sending control switch amount
On-off signal, so that control quenches protective switch K1 and let out can switch K2.
As shown in figure 5, control circuit KZ is mainly made of three parts: the control of DBB1 power supply, the acquisition of DBB2 data, DBB3
Protection.Wherein the acquisition of DBB2 data is mainly used for feedback signal processing, including current feedback, load voltage feedback, feed-forward voltage
Feedback etc..After it handles feedback signal, it is supplied to the control of DDB1 power supply.The control of DBB1 power supply is mainly using by DBB2 and DBB3
The signal of generation is judged, is calculated.Pwm control signal GA, GB, GC, GD are generated, main contactor switching signal, soft start close
Lock signal etc..DBB3 is protected partially to cut off the water supply mainly for generation of load, load overtemperature, main contactor combined floodgate, over-voltage, phase shortage etc. and be protected
Protect signal.
Embodiment
By taking certain 230MeV superconducting cyclotron superconduction power supply as an example.The superconduction power supply is by input filter circuit, 24
Pulse wave rectifier, output filter circuit, quenches protection circuit and quenches protection Auxiliary Control Element group multi-tube phase dislocation copped wave DC-DC
At.
Input AC voltage first pass around EMI(EMI FILTER) filtering after, be added to input rectifying filter circuit, it is advanced
Row rectification, 24 pulse wave rectifier circuits are to wait 12 commutating phase transformer of capacity by two of each 7.5 ° of left and right phase shift, through 4 groups
Three phase full wave rectification parallel output composition.Wherein the first siding ring of T1, T2 are delta connection, two groups of coils point of secondary side
Not Wei triangle and star connection, 24 pulse wave uncontrollable rectifier ripple factors be 1 × 10-4, harmonic wave low-limit frequency is 1200
Hz, the direct current obtained after 24 pulse wave rectifiers are then added on two-stage LC filter circuit.Make after being filtered by two-stage LC
System low frequency line is less than ± 1 × 10-4.Wherein, L1-1, L1-2, L2-1, L2-2, C5, C6, C7, C8 constitute first order LC filtering
Circuit, L3-1, L3-2, C9, C10, R4 constitute second level LC filter circuit, and wherein R4 is that energy discharges resistance.
After input rectifying filters, the stable DC of formation is electrically added digitlization current stabilization circuit.Digitize current stabilization circuit
It is composed in parallel by four road chopper circuits, is illustrated below with working principle wherein all the way.When what is generated by control circuit
After SK1 is connected in drive control pulse signal, capacitor C15 is started to charge, and output voltage is added to the both ends of load, in filling for C15
In electric process, the electric current in inductance L5-1, L5-2 starts gradually to increase, and the ability of storage also gradually increases.Two pole of afterflow at this time
Pipe VD1 due to reverse bias by.When drive control pulse signal ends SK1, the electric current in inductance L5-1, L5-2 subtracts
Small, freewheeling diode VD2 is connected in the induced potential that inductance both ends generate.The magnetic field energy stored in inductance passes through diode
VD2 passes to load, and when load voltage is lower than capacitor C15 both end voltage, capacitor C15 is just to load discharge, control driving arteries and veins
Rush signal in cycles repeat the above process chopper circuit, so that output voltage is intended to some definite value.
Using the multi-tube phase dislocation parallel function of digital controller, 4 phase of misphase is selected.The switching frequency of 4 IGBT is
16kHz, output frequency improves 4 times after parallel connection, up to 64kHz.Ripple is only the 1/16(1/n of single branch chopper circuit2: n is
Misphase number), chopping frequency is improved, by High frequency filter circuit, inhibits high frequency ripple well, guarantees system high-frequency
Ripple index is better than ± 1 × 10-4.Meanwhile the volume of filter is also smaller.
It is equipped in the connection line of superconducting coil and output filter circuit and quenches protection control switch, the two of superconducting coil
End connects outer protective resistance and lets out energy module.Work normally be superconducting coil excitation when, K1 closure, K2 closure, power supply and load
Coil constitutes circuit, is exported by stablizing for power supply, and outer protective resistance is superconducting coil excitation by superconducting coil short circuit at this time.Fastly
Speed is unloaded energy wired in parallel and is connect in power output end, and when dropping field and power-off, K1 is gone off by being closed, and K2 is kept closed, and bears
Carrying coil energy storage can module release by quickly unloading.It quenches signal detection and control module includes quenching detecting signal unit and mistake
Hypervisor unit quenches the voltage difference between the relatively more upper and lower superconduction magnet exciting coil tap of detecting signal unit, and gives and quench control
Unit judges, think to quench and (quench Detection & Controling module and detect and quench letter after voltage difference is more than certain limit
Number), the on-off signal that control unit issues control switch amount is quenched, control quenches protection control switch K1 disconnection；Outer protection electricity
Resistance is connected with superconduction magnet exciting coil, is released energy.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of with the ultrastability Switching Power Supply for quenching defencive function, comprising: input rectifying filter circuit, digitlization are steady
Current circuit, output filter circuit, control circuit, the input rectifying filter circuit are connect with digitlization current stabilization circuit input terminal,
The output end of digitlization current stabilization circuit is connected with output filter circuit input terminal, control circuit input terminal and input rectifying filtered electrical
The input terminal alternating current inlet wire on road connects, and output end is connected with digitlization current stabilization circuit；It is characterized by also including quench protection
Circuit is connected to after output filter circuit, quenches protection Auxiliary Control Element, encouraging for superconducting coil when normal work
Magnetic, demagnetization, and the electric signal between real-time detection superconducting coil, quick closedown switchs after detecting that superconducting coil quenches
Power supply, disconnection quench protective switch.
2. as described in claim 1 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that: lose
Super protection circuit, is formed by letting out energy module and two tandem taps, and the one end for letting out energy module connects the node of two switch rooms,
Its other end is connect with output filter circuit output end, and one end of tandem tap connects output filter circuit output end, the other end
Connect superconducting coil.
3. as claimed in claim 2 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that:
One protective resistance of superconducting coil loong shunt.
4. a kind of with the ultrastability Switching Power Supply for quenching defencive function as claimed in claim 2 or claim 3, feature exists
In: the one end for quenching protection Auxiliary Control Element connects superconducting coil, and the other end connects two switches.
5. as described in claim 1 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that: institute
The input rectifying filter circuit stated includes 24 pulse wave rectifier transformers and input filter circuit, and 24 pulse waves are whole
Convertor transformer is composed in series by two groups of transformers in output end, and every group of transformer separately includes first siding ring and two two
Secondary lateral coil；The second siding ring output of two groups of transformers is connect into three-phase bridge rectifier circuit respectively, the output of tetra- tunnel Bing Jiang is connected,
Three-phase alternating current will be inputted and be rectified into direct current；The output ends of 24 pulse wave rectifier transformers and input filter circuit it is defeated
Enter end connection, input filter circuit is made of two-stage LC filter circuit.
6. as described in claim 1 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that: institute
The collector of four IGBT of multi-tube phase dislocation parallel connection chopping is connected in parallel in the digitlization current stabilization circuit stated, every to cut all the way
The output on swash road links together, and constitutes four road chopper circuits parallel connections, first capacitor and the second capacitor are connected in number in parallel
Change current stabilization circuit input terminal；The first end of first inductance is connect with the positive output end of parallel connection chopping route, and the first of the second inductance
End is connect with the negative output terminal of parallel connection chopping route, and the is connected between the second end of the first inductance and the second end of the second inductance
Three capacitors, the second end of the first inductance are connect with the first end of the 4th capacitor, the second end ground connection of the 4th capacitor；Second inductance
Second end is connect with the second end of the 5th capacitor, the first end ground connection of the 5th capacitor.
7. as described in claim 1 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that: institute
The control circuit stated uses full-digital control, including power-supply controller of electric and data collector, passes through DC current in output end
Sensor obtains feedback signal, generates and provides the reference signal of ultrastability.
8. as described in claim 1 a kind of with the ultrastability Switching Power Supply for quenching defencive function, it is characterised in that: lose
Super protection Auxiliary Control Element, including quench detecting signal unit and quench control unit.
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| CN201811342157.7A CN109347341A (en) | 2018-11-13 | 2018-11-13 | It is a kind of with the ultrastability Switching Power Supply for quenching defencive function |
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| CN201811342157.7A CN109347341A (en) | 2018-11-13 | 2018-11-13 | It is a kind of with the ultrastability Switching Power Supply for quenching defencive function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337224A (en) * | 2021-12-30 | 2022-04-12 | 朝阳微电子科技股份有限公司 | Novel multistage switching energy discharge device |
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| CN102222983A (en) * | 2011-06-15 | 2011-10-19 | 中国科学院电工研究所 | Input and output integrated converter of superconducting energy storage magnet |
| CN103683992A (en) * | 2013-12-18 | 2014-03-26 | 中国原子能科学研究院 | Switching power supply circuit based on twenty pulse wave rectifying and multi-tube phase dislocation chopping |
| CN106098291A (en) * | 2016-07-29 | 2016-11-09 | 中国原子能科学研究院 | The quick demagnetizing method of cyclotron big energy storage superconducting coil |
| CN106356813A (en) * | 2016-07-29 | 2017-01-25 | 中国原子能科学研究院 | Quench protection method based on internal protection and external protection for 230 MeV superconducting cyclotron superconducting coil |
| CN209217965U (en) * | 2018-11-13 | 2019-08-06 | 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 |
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| CN102222983A (en) * | 2011-06-15 | 2011-10-19 | 中国科学院电工研究所 | Input and output integrated converter of superconducting energy storage magnet |
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