CN107134957B - Without tap magnet valve structure - Google Patents
Without tap magnet valve structure Download PDFInfo
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- CN107134957B CN107134957B CN201710440708.2A CN201710440708A CN107134957B CN 107134957 B CN107134957 B CN 107134957B CN 201710440708 A CN201710440708 A CN 201710440708A CN 107134957 B CN107134957 B CN 107134957B
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- 230000005284 excitation Effects 0.000 claims description 146
- 230000005347 demagnetization Effects 0.000 claims description 30
- 230000007935 neutral effect Effects 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 19
- 229920006395 saturated elastomer Polymers 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 15
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000009335 monocropping Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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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
- Y02E40/30—Reactive power compensation
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- Magnetically Actuated Valves (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The invention discloses a kind of no tap magnet valve structure, including magnet valve main body MV and controllable electric power CPS, magnet valve main body MV includes magnet valve magnet M, coil L1, coil L2, coil L3, coil L4, inverse-impedance type switch S1 and inverse-impedance type switch S2；Coil L1 and coil L2 are respectively positioned on magnetic pole M1, and coil L3 and coil L4 are respectively positioned on magnetic pole M2；What the Same Name of Ends of coil L1 and the non-same polarity of coil L3 were interconnected to constitute magnet valve main body MV exchanges end A1, and what the non-same polarity of coil L2 and the Same Name of Ends of coil L4 were interconnected to constitute magnet valve main body MV exchanges end A2.The characteristics of power that there is the present invention the two-way controllable electric power BPS of dual output to need is small, significant increase device reliability of operation.
Description
Technical field
The present invention relates to the engineering device technique field of electric system, it is applied to smart grid, high-power more particularly, to one kind
The needs such as Electric Drive, electric propulsion, electric arc furnaces quickly adjust the occasion of reactive power without tap magnet valve structure.
Background technique
Magnet valve or magnet valve type controlled inductance are a kind of Reactive-power control dresses using Low-voltage Electronic switch control high-voltage large-capacity
It sets, has the advantages that structure is simple, high reliablity, the magnet valve of conventional excitation obtains wide application in the power system.
Fig. 1 is the example of traditional magnet valve main structure.
Magnet valve includes magnet (grey parts magnetic circuit) and coil, two couples of coils L1, L2 in four coils L1, L2, L3, L4
It is respectively placed in two magnetic poles M1, M2 for being respectively provided with contraction section of magnet with L3, L4, coil L1 and L3 connect and compose magnet valve
Exchange end A2, L1 and L4 and L3 and the L2 that exchange end A1, coil L2 and L4 connect and compose magnet valve are connected as schemed mutually distortion, and two
A tie point be respectively neutral point and excitation point, neutral point and excitation point between be respectively sustained diode anode and cathode,
L1 and L4 in two pairs of coils draw tap respectively, are rectified by thyristor S1, S2, provide forward voltage to excitation point, in turn
DC excitation electric current is provided for 4 coils of M1 and M2.M1 exchanges magnetic circuit, DC excitation by third magnetic pole composition with M2's
In M1 and M2(and crossbeam) between constitute circuit.The magnet valve route of practical application, there are many tap form, magnetic pole types for coil
Also have very much, but basic principle is roughly the same.
Fig. 2 is the work wave signal of magnet valve, and waveform from top to bottom is magnet valve alternating voltage V12, magnetic pole M1 magnetic respectively
Logical, magnetic pole M2 magnetic flux, the electric current of coil L1, L2, the electric current of coil L3, L4, magnet valve total current (flow through the end A1 and the end A2 it
Between electric current) L12.It has been superimposed direct current flux respectively in M1 and the magnetic flux of M2.Since M1 and M2 all have contraction section, in higher magnetic
It will be saturated first under logical.Under the exchange end voltage V12 of magnet valve and exciting current collective effect, M1 replaces with M2 and tends to
Saturation, as long as control exciting current, it will be able to the depth of the saturation of magnet valve is controlled, so that different size of friendship is presented in magnet valve
Flow impedance.
Since usual tap voltage is only the 1-3% of V12, with the thyristor of conventional pressure resistance can control 30kV or
The magnet valve of higher voltage.Since the excitation voltage of conventional magnet valve is relatively low, adjustment of field excitation speed substantially 150-300ms.
In recent years, for meet fast reactive adjusting the needs of, it is desirable that adjustment of field excitation speed is in 30ms or so or faster.In this regard, conventional magnetic
The speed-raising countermeasure of valve is to improve tap voltage and substitute diode D with turn-off device.When needing high-speed excitation, use is higher
Forward voltage (such as improving tap voltage) provides excitation voltage for magnet valve；When needing quickly demagnetization, turn-off device is closed,
It is allowed to evoke high back voltage in excitation point.It requires to increase due to higher forward voltage, and to the limitation of above-mentioned backward voltage
Add many high pressures, high power component, this makes the cost of high-speed excitation very high.Many improvement all take this kind of do at present
Method affects the application of quick magnet valve.
Summary of the invention
Goal of the invention of the invention be in order to overcome in the prior art excitation control circuit power capacity demand it is excessively high not
Foot, provide it is a kind of be applied to the needs such as smart grid, high-power electric transmission, electric propulsion, electric arc furnaces quickly adjust it is idle
The occasion of power without tap magnet valve structure.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of no tap magnet valve structure, including magnet valve main body MV and controllable electric power CPS, magnet valve main body MV include magnet valve magnet
M, coil L1, coil L2, coil L3, coil L4, inverse-impedance type switch S1 and inverse-impedance type switch S2；
The coil L1 and coil L2 are respectively positioned on magnetic pole M1, and coil L3 and coil L4 are respectively positioned on magnetic pole M2；Coil L1
Same Name of Ends and the non-same polarity of coil L3 be interconnected to constitute magnet valve main body MV exchange end A1, the non-same polarity of coil L2 with
The Same Name of Ends of coil L4 is interconnected to constitute the exchange end A2 of magnet valve main body MV, and the non-same polarity of coil L1 and coil L4's is non-same
Name end is interconnected to constitute neutral point N, and the Same Name of Ends of coil L2 is connected with the negative terminal of inverse-impedance type switch S1 constitutes excitation point K, line
The Same Name of Ends of circle L3 is connected with the negative terminal of inverse-impedance type switch S2 constitutes excitation point J, inverse-impedance type switch S1 and inverse-impedance type switch S2
Anode is all connected with neutral point；Output N1, J1, K1 of controllable electric power CPS is connect with neutral point N, excitation point J and excitation point K respectively.
Fig. 2 waveform is observed in conjunction with Fig. 1.As can be seen that the electric current that diode D passes through is exactly the electricity of L1, L2 or L3, L4
Stream, close to the total current of magnet valve.
When needing high-speed excitation, control S1 or S2 is open-minded, forced closing diode D, and high voltage is added on excitation point；
When needing quickly demagnetization, replace diode D, and the disjunction switch with switch.It can be seen that electric current to be processed needed for high-speed excitation
Total current close to magnet valve and the excitation voltage much higher than traditional magnet valve.
Thinking of the invention is the line removed between diode D and L2 and L3, to form two independent excitations
Point；Remove two taps of L1 and L4；Two excitation points be connected between neutral point with two switches, make the line on M1 and M2
Loop current is individually controllable.
As shown in Fig. 2, what the high current of M1 and M2 coil was always alternately present, if excitation con-trol only handles magnetic
The low current of unsaturated branch in the two-way coil of valve, i.e., excitation con-trol is just for M1 and M2 in unsaturated state, so that it may
To avoid DC excitation when M1 or M2 is in saturation, the control power of excitation can be greatly lowered.Due to excitation con-trol
Power Exchange is only carried out under low current, the switching movement of S1 and S2 are also only to complete under low current, dual output
Two-way controllable electric power BPS do not need very big power, these all significant increase device reliabilities of operation.
Find out from Fig. 2, each magnetic pole at least half period is in unsaturated state, when unsaturated in actual use
Between can also be more some more, therefore at least within the half period time to M1 or M2 apply excitation voltage be it is feasible, the present invention is in original
It is feasible in reason.
Preferably, exchange end A1, exchange end A2 are connect with alternating current circuit respectively, exchange end A1 is relative to exchange end A2's
End voltage is alternating voltage V12；Make controllable electric power CPS respectively between neutral point N, excitation point J or in neutral point N, sharp
It encourages and applies forward voltage between point K, make between coil L1, coil L3, DC excitation electricity is respectively flowed through between coil L2, coil L4
Flow component；The degree of saturation of magnetic pole M1 and magnetic pole M2 is determined that V12 is timing by V12 and DC excitation current component, and magnetic pole M1 becomes
In saturation；When V12 is negative, magnetic pole M2 tends to be saturated；Magnetic pole M1 and the saturation of magnetic pole M2 are alternately present, and controllable electric power CPS is swashing
Application forward voltage Vjn or controllable electric power CPS between point J and neutral point N is encouraged to apply just between excitation point K and neutral point N
The magnetic pole M2 in saturation is acted on to voltage Vkn, Vjn, makes its reversed excitation but unsaturation；Or Vkn is acted in saturation
Magnetic pole M1, make its reversed excitation but unsaturation；
When the reversion of V12 voltage direction, magnetic pole M1 or magnetic pole M2 are easier to be saturated；Control excitation voltage, adjusting magnetic pole M1,
The magnetic saturation degree of magnetic pole M2, thus adjust the exchange end A1 of magnet valve main body MV with exchange the AC impedance between the both ends A2 of end；
When magnet valve needs high-speed excitation, excitation voltage is increased；Conversely, cutting off reverse blocking when magnet valve needs quickly demagnetization
Type switch S1 or inverse-impedance type switch S2 makes Vjn or Vkn that backward voltage be presented, and realizes quickly demagnetization；Excitation is big with demagnetization voltage
Controllable magnet valve high-speed excitation or demagnetization are realized in the small control by controllable electric power CPS.
As the alternative of above scheme, controllable electric power CPS includes DC power supply PS and switch switching unit；Switch is cut
Changing unit includes inverse conductivity type switch S21, inverse conductivity type switch S22, inverse conductivity type switch S23, inverse conductivity type switch S24, storage capacitor C；
The negative terminal of inverse conductivity type switch S21 is connected with the anode of inverse conductivity type switch S22 constitutes the terminal J1 of controllable electric power CPS；The negative terminal of S23
It is connected with the anode of S24 and constitutes the terminal K1 of controllable electric power CPS；Inverse conductivity type switch S21, inverse conductivity type switch S23 and DC power supply
The anode of PS is connected with each other, the negative terminal interconnection of inverse conductivity type switch S22, inverse conductivity type switch S24 and DC power supply PS；Energy storage electricity
It is in parallel with DC power supply PS to hold C；
Controllable electric power CPS applies voltage Vjk appropriate between excitation point J and excitation point K respectively, opens inverse conductivity type and switchs
S21, inverse conductivity type switch S24 make Vjk be positive, or open inverse conductivity type switch S22, so that Vjk is negative against conductivity type switch S23, the width of Vjk
Degree is the end voltage of DC power supply PS；S21, S23, S22, S24 are opened simultaneously can make Vjk 0；
It is positive or is negative the moment in V12, Vjk is made to be positive or be negative respectively, magnet valve is made to tend to be saturated, Vjk makes excitation decline for 0
Subtract；Excitation voltage average value and positive pulse width or negative pulse width are directly proportional to the accounting of ac cycle；It needs to promote excitation
When horizontal, the accounting is improved；When needing to reduce excitation level, the accounting is reduced；
When needing quickly to reduce excitation level, inverse conductivity type switch S21, inverse conductivity type switch S22, inverse conductivity type switch S23 are closed
With inverse conductivity type switch S24；When magnetic pole M1 is in unsaturated, inverse conductivity type switch S1 is closed；When magnetic pole M2 is in unsaturated, close
Inverse conductivity type switch S2；The amplitude of Vjk is limited by the end voltage of DC power supply PS.
As the alternative of above scheme, controllable electric power CPS includes that DC power supply PS, DC power supply PS2 and switch are cut
Change unit；The switch switching unit includes inverse conductivity type switch S21, inverse conductivity type switch S22, inverse conductivity type switch S23, inverse conductivity type
Switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, diode D26, storage capacitor C and storage capacitor C2；Inverse conductivity type is opened
Close S21, the negative terminal of inverse conductivity type switch S25 is connected with the anode of inverse conductivity type switch S22, the terminal J1 of composition controllable electric power CPS；
Negative terminal against conductivity type switch S23, inverse conductivity type switch S27 is connected with the anode of inverse conductivity type switch S24, constitutes controllable electric power
The terminal K1 of CPS；Anode against conductivity type switch S25, inverse conductivity type switch S27 is connected with each other with the negative terminal of diode D26, two poles
The anode of pipe D26 is connected with the anode of PS2；Inverse conductivity type switch S21, inverse conductivity type switch S23, the anode of DC power supply PS are mutual
Connection；The negative terminal interconnection of inverse conductivity type switch S22, inverse conductivity type switch S24, DC power supply PS, DC power supply PS2；Energy storage electricity
Hold C and DC power supply PS to be in parallel, storage capacitor C2 is in parallel with DC power supply PS2；
Forbid open-minded simultaneously against any 2 in conductivity type switch S23, inverse conductivity type switch S24, inverse conductivity type switch S27；It is open-minded
Inverse conductivity type switch S21, inverse conductivity type switch S24 can make Vjk be positive；
Controllable electric power CPS applies voltage Vjk appropriate between excitation point J and excitation point K respectively, opens inverse conductivity type and switchs
S22, inverse conductivity type switch S23 can make Vjk be negative, and the amplitude of Vjk is the end voltage of DC power supply PS；Inverse conductivity type is opened to switch
S24, inverse conductivity type switch S25 can make Vjk be positive, and open inverse conductivity type switch S22, Vjk can be made to be negative against conductivity type switch S27,
The amplitude of Vjk is the end voltage of PS2；It inverse conductivity type switch S22, inverse conductivity type switch S24 while opening and can make Vjk 0；
When magnetic pole M1 or magnetic pole M2 is in unsaturated, so that Vkn or Vjn is positive respectively, magnet valve can be made to tend to be saturated,
Vjk, which is 0, makes excitation decay；Excitation voltage average value is directly proportional to accounting of the positive pulse width to ac cycle；It needs to be promoted
Accounting is improved when excitation level, reduces accounting when needing to reduce excitation level；The voltage of DC power supply PS is higher than PS2, for fast
It is horizontal that speed promotes excitation；
When needing quickly to reduce excitation level, close inverse conductivity type switch S21, inverse conductivity type switch S22, against conductivity type switch S23,
Inverse conductivity type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, close S1 or S2 when M1 or M2 is in unsaturated respectively,
Make that Vjk is negative and amplitude is limited by the end voltage of PS.
As the alternative of above scheme, controllable electric power CPS includes that DC power supply PS, DC power supply PS2 and switch are cut
Change unit；Switching unit by inverse conductivity type switch S21, inverse conductivity type switch S22, inverse conductivity type switch S23, against conductivity type switch S24,
Inverse conductivity type switch S25, inverse conductivity type switch S27, inverse conductivity type switch S30 and diode D26, D29 and storage capacitor C, energy storage electricity
Hold C2 to constitute；Negative terminal against conductivity type switch S21, inverse conductivity type switch S25 is connected composition controllably with the anode of inverse conductivity type switch S22
The terminal J1 of power supply CPS；Negative terminal against conductivity type switch S23, inverse conductivity type switch S27 is connected with the anode of inverse conductivity type switch S24
Meet the terminal K1 for constituting controllable electric power CPS；The anode of diode D29 is connected with the anode of inverse conductivity type switch S30 constitutes terminal N1；
Inverse conductivity type switch S21 is connected with the anode of DC power supply PS with the cathode of the anode of inverse conductivity type switch S23 and diode D29
It connects；The cathode of inverse conductivity type switch S25, the anode of inverse conductivity type switch S27 and diode D26 are connected with each other, the anode of diode D26
It is connected with the anode of DC power supply PS2；Inverse conductivity type switch S22, inverse conductivity type switch S24, against conductivity type switch S30 negative terminal with
The negative terminal connection of DC power supply PS, DC power supply PS2；Storage capacitor C is in parallel with DC power supply PS, storage capacitor C2 and direct current
Power ps 2 are in parallel；
Inverse conductivity type switch S21, inverse conductivity type switch S22, forbid against any 2 in conductivity type switch S25 open-minded simultaneously, forbid
It is open-minded simultaneously against any 2 in conductivity type switch S23, inverse conductivity type switch S24, inverse conductivity type switch S27；Inverse conductivity type is opened to switch
S21, inverse conductivity type switch S30 can make Vjn be positive, and open inverse conductivity type switch S23, Vkn can be made to be positive against conductivity type switch S30,
The amplitude of Vjn, Vkn are the end voltage of DC power supply PS；Open inverse conductivity type switch S24, inverse conductivity type switch S25 can make Vjk
Just, inverse conductivity type switch S22 is opened, inverse conductivity type switch S27 can make Vjk be negative, the end electricity that the amplitude of Vjk is DC power supply PS2
Pressure；Inverse conductivity type switch S22, inverse conductivity type switch S30 or inverse conductivity type switch S24, inverse conductivity type switch S30 are opened and can be made respectively simultaneously
Vjn or Vkn is 0；
So that Vkn or Vjn is positive respectively when magnetic pole M1 or magnetic pole M2 is in unsaturated, magnet valve can be made to tend to be saturated, Vjk
Excitation is set to decay for 0；Excitation voltage average value is directly proportional to accounting of this positive pulse width to ac cycle；It needs to be promoted and encourage
The accounting is improved when magnetic level, and the accounting is reduced when needing to reduce excitation level；The voltage of DC power supply PS is higher than DC power supply
PS2, it is horizontal for fast lifting excitation；
When needing quickly to reduce excitation level, close inverse conductivity type switch S21, inverse conductivity type switch S22, against conductivity type switch S23,
Inverse conductivity type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, open inverse conductivity type switch S30, in magnetic pole M1 or magnetic pole M2
S1 or S2 is closed when in unsaturation respectively, makes that Vjn or Vkn are negative respectively and amplitude is limited by the end voltage of DC power supply PS
System.
Preferably, inverse-impedance type switch S1 and inverse-impedance type switch S2 are thyristor, turned off inverse when needs quickly demagnetize
When resistance type switch S1 or inverse-impedance type switch S2, Vjn or Vkn is applied by DC power supply CPS respectively, thyristor is made to bear reversed electricity
Pressure is to turn off.
Preferably, DC power supply PS and DC power supply PS2 be can current limliting, pressure limiting controllable voltage current source.
Therefore, the invention has the following beneficial effects: excitation con-trols, and Power Exchange, S1 and S2 are only carried out under low current
Switching movement also be only completed under low current, the two-way controllable electric power BPS of dual output does not need very big power,
Significant increase device reliability of operation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the prior art；
Fig. 2 is a kind of magnet valve working waveform figure of the prior art；
Fig. 3 is a kind of structural schematic diagram of no tap magnet valve of the invention；
Fig. 4 is a kind of constitutional diagram of each switch of the invention；
Fig. 5 is a kind of structural schematic diagram of the embodiment of the present invention 2；
Fig. 6 is a kind of structural schematic diagram of the embodiment of the present invention 3；
Fig. 7 is a kind of structural schematic diagram of the embodiment of the present invention 4.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1
Embodiment as shown in Figure 3 is a kind of no tap magnet valve structure, including magnet valve main body MV and controllable electric power CPS,
In, magnet valve main body MV includes magnet valve magnet M and coil L1, L2, L3, L4 and inverse-impedance type switch S1, inverse-impedance type switch S2；
L1 and L2 are placed on same magnetic pole M1, and L3 and L4 are placed on same magnetic pole M2；The Same Name of Ends of L1 and L3's is non-of the same name
What non-same polarity and the Same Name of Ends of L4 that end is interconnected to constitute exchange the end A1, L2 of MV were interconnected to constitute MV exchanges end A2,
The non-same polarity of L1 and the non-same polarity of L4 are interconnected to constitute neutral point N, and the composition that the Same Name of Ends of L2 is connected with the negative terminal of S1 swashs
The Same Name of Ends for encouraging point J, L3, which is connected to constitute with the negative terminal of S2, motivates the anode of point K, S1 and S2 to meet neutral point N；Three of CPS are defeated
N1, J1, K1 out meet N, J, K respectively；The Same Name of Ends side of L1, L2, L3, L4 are all with mark of adding some points.
When work, A1, A2 connect alternating current circuit respectively, and A1 is alternating voltage V12 relative to the end voltage of A2；Pass through control
CPS applies forward voltage (i.e. excitation voltage) between J, K and N respectively, makes between L1, L3, respectively flows through direct current between L2, L4
Excitation current component；The degree of saturation of M1 and M2 is determined that V12 is that timing M1 tends to be saturated by V12 and DC excitation current component,
M2 tends to be saturated when V12 is negative；The saturation of M1 and M2 is always alternately present, and CPS applies between J and N or between K and N respectively
Forward voltage (being Vjn or Vkn respectively) appropriate, acts in non-unsaturated M1 or M2, makes its reversed excitation but insatiable hunger
With, then when V12 voltage direction invert when M1 or M2 can be made to be easier to be saturated；Thus the excitation voltage is controlled, so that it may adjust
The magnetic saturation degree for saving M1, M2, to adjust AC impedance between the both ends A1 and A2 of MV；
Excitation voltage can be increased when magnet valve needs high-speed excitation；Otherwise when magnet valve needs quickly demagnetization that can also cut off
S1 or S2 makes Vjn or Vkn that backward voltage (i.e. demagnetization voltage) be presented, to realize quickly demagnetization；Excitation is big with demagnetization voltage
The small control by CPS, it is possible thereby to realize controllable magnet valve high-speed excitation or demagnetization；
Embodiment 2
As shown in figure 4, be respectively from left to right single-way switch (electric current is from top to bottom), inverse-impedance type switch, inverse conductivity type switch,
IGBT, thyristor, IGBT and the symbol of anti-paralleled diode combination.
Single-way switch refers in particular to that one direction shutdown voltage can be born, but i.e. cannot bear voltage can not pass through electric current to opposite direction
Electronic power switch, just used the symbol of ordinary tap for the sake of simplicity.Such as common IGBT, it can only bear positive electricity
Pressure.
Inverse-impedance type switch is the power electronic devices for only allowing to switch one direction conducting.For example, inverse-impedance type can turn off brilliant lock
Pipe GTO or inverse-impedance type IGCT, or a kind of combination institute structure of the and Diode series by GTO, IGCT, IGBT, MOSFET
At.
Inverse conductivity type switch is only to allow to switch the power electronic devices that still there is opposite direction to be connected when disconnecting.For example, inverse lead
Type switch, which can be, to be made of one kind of GTO, IGCT, IGBT, MOSFET with diode inverse parallel.
The anode of so-called switch and negative terminal refer respectively to positive and negative voltage terminal when it bears shutdown voltage in the present invention.
For example, the inverse conductivity type in Fig. 4 switchs, anode is the connected terminal of anti-and diode cathode.
For the saturation state for maintaining magnet valve, applies certain DC voltage between excitation point and neutral point and is necessary,
Make it to overcome decaying of the DC excitation current component in coil.The DC voltage can be stable voltage, be also possible to
Pulse voltage, influence excitation current lifting is the DC voltage average value in ac cycle.In quick demagnetization, S1 or S2's
Cutting, can evoke very high back-pressure, therefore it is very necessary for being limited by BPS to it.To absorb demagnetization current, BPS is needed
If the two-way controllable electric power for having energy in bidirectional flow management function.
Fig. 5 is the structural schematic diagram that a kind of magnet valve of CPS is made of DC power supply and switch unit, CPS and embodiment 1
Difference, other parts are same as Example 1；As shown in figure 5, the N of MV is no longer drawn, CPS only has J1 and two terminals of K1, CPS
It is made of DC power supply PS with switch switching unit；Switching unit by inverse conductivity type switch S21, S22, S23, S24, and
Storage capacitor C is constituted；The negative terminal of S21 is connected with the anode of S22 constitutes terminal J1；The negative terminal of S23 is connected structure with the anode of S24
At terminal K1；The anode of S21, S23, PS are connected with each other, and the negative terminal of S22, S24, PS are connected with each other；C is in parallel with PS；
Forbid S21, S22 and S23, S24 open-minded simultaneously；Opening S21, S24 can make Vjk be positive, and opening S22, S23 can
So that Vjk is negative, the amplitude of Vjk is the end voltage of PS；S21, S23 or S22, S24 are opened simultaneously and can be made Vjk 0；
Be positive or be negative in V12 makes Vjk be positive or be negative magnet valve can be made to tend to be saturated respectively constantly, and Vjk, which is 0, to be made to encourage
Magnetic decaying；Excitation voltage average value and this positive or negative pulse width are directly proportional to the accounting of ac cycle；Need to be promoted excitation water
The accounting is usually improved, the accounting is reduced when needing to reduce excitation level；
When needing quickly to reduce excitation horizontal (i.e. quickly demagnetization), S21, S22, S23, S24 are closed, is in not in M1 or M2
S1 or S2 is closed when saturation respectively；The amplitude of Vjk is limited by the end voltage of PS.
As shown in Fig. 5, when S21 and S24 is opened, forward voltage is drawn between J1 and K1；When S22 is open-minded with S23
When, negative voltage is drawn between J1 and K1；When normal operation, the switch of unsaturated branch is always open-minded in usual S1 or S2
, it is equivalent to the neutral point N for being connected to magnet valve, therefore the scheme for omitting neutral point N is equally feasible in principle.
When the driving voltage Vjk for being added to magnet valve is positive or negative, the electric current of S1 or S2, original electricity will be ended
Stream is just flowed through by J1, K1 from PS respectively.Positive Vjn and Vkn plays holding and castering action for DC excitation component；When
They are lower and when being not enough to offset excitation loss, excitation level will decline.Since opening for S21, S22, S23 all occurs
The M1 or M2 unsaturated period, therefore electric current all very littles are controlled, control power is also just more much lower than conventional excitation circuit.This point
It is extremely important for high-speed excitation, as long as with sufficiently high PS voltage, so that it may it obtains with regard to cracking excitation speed, without
Inject very big exciting power.
When magnet valve needs quickly demagnetization, S1 or S2 is cut off, so that it may evoke very high backward voltage, this voltage is clamped
Make on the voltage of PS it is necessary to, can be to avoid the component on excessive pressure damages route.Due to cut off all be occur in M1 or
The M2 unsaturation period, therefore the switch to be disconnected only flows through lesser exciting current, the PS1 for clamp voltage is not needed yet
Very big power.
For the capacitor C being connected in parallel on PS for absorbing or discharging magnetization energy, this can play buffer function to PS.
Embodiment 3
Fig. 6 is a kind of structural schematic diagram that the magnet valve of CPS is made of high and low pressure DC power supply and switch unit, CPS with
Embodiment 1 is different, and other parts are same as Example 1；As shown in fig. 6, the N of MV is no longer drawn, CPS only has J1 and K1 two ends
Son, CPS are made of DC power supply PS with switch switching unit；CPS is DC power supply PS, PS2 and switch switching unit institute structure
At；For the switching unit by inverse conductivity type switch S21, S22, S23, S24, S25, S27, diode D26 and energy storage are electric
Hold C, C2 to constitute；The negative terminal of S21, S25 are connected with the anode of S22 constitutes terminal J1；The anode phase of the negative terminal of S23, S27 and S24
Connect and compose terminal K1；The anode of S25, S27 and the negative terminal of D26 are connected with each other, and the anode of D26 is connected with the anode of PS2；
The anode of S21, S23, PS are connected with each other；The negative terminal of S22, S24, PS, PS2 are connected with each other；C is in parallel with PS, and C2 and PS2 phase is simultaneously
Connection；
Forbid any 2 in S21, S22, S25 it is open-minded simultaneously, forbid any 2 in S23, S24, S27 while opening
It is logical；Opening S21, S24 can make Vjk be positive, and opening S22, S23 can make Vjk be negative, and the amplitude of Vjk is the end voltage of PS；It opens
Logical S24, S25 can make Vjk be positive, and opening S22, S27 can make Vjk be negative, and the amplitude of Vjk is the end voltage of PS2；S22,
S24 is opened simultaneously can make Vjk 0；
So that Vkn or Vjn is positive respectively when M1 or M2 is in unsaturated, magnet valve can be made to tend to be saturated, Vjk, which is 0, to be made
Excitation decaying；Excitation voltage average value is directly proportional to accounting of this positive pulse width to ac cycle；Need to be promoted excitation level
The Shi Tigao accounting, reduces the accounting when needing to reduce excitation level；The voltage of PS is higher than PS2, is used for fast lifting excitation water
It is flat；
When needing quickly to reduce excitation horizontal (i.e. quickly demagnetization), close S21, S22, S23, S24, S26, S27, in M1 or
M2 closes S1 or S2 when being in unsaturated respectively, makes that Vjk is negative and amplitude is limited by the end voltage of PS.
Here it is for above-mentioned using the improvement of a power ps situation, steadily and at a slow speed adjusts the excitation water of M1, M2
The DC power supply PS2 of lower voltage has usually been employed, and when needing high-speed excitation or demagnetization, use the direct current of high voltage instead
Source PS, to take into account the rapidity and stationarity demand of adjustment of field excitation.Here when D26 is to stop S21 or S23 to open,
Anti- filling of the PS high pressure for PS2 low pressure, protective switch S25 and S27；It, then can be with if S25 and S27 also uses inverse-impedance type to switch
Save D26.
Embodiment 4
Fig. 7 is a kind of knot of the magnet valve that CPS is made of high and low pressure DC power supply and switch unit with neutral point tap
Structure schematic diagram, CPS is different from embodiment 1, and other parts are same as Example 1；As shown in fig. 7, CPS be DC power supply PS,
PS2 is constituted with switch switching unit；The switching unit is by inverse conductivity type switch S21, S22, S23, S24, S27, S30
It is constituted with diode D26, D30 and storage capacitor C, C2；The negative terminal of S21, S25 are connected with the anode of S22, as described
Terminal J1；The negative terminal of S23, S27 are connected as the terminal K1 with the anode of S24；The anode phase of the anode of D29 and S30
Continuous cropping is the terminal N1；The anode of S21 and S27 and the cathode of D29, are connected with the anode of PS；S25, S27's
The cathode of anode and D26 are connected with each other, and the anode of D26 is connected with the anode of PS2；The negative terminal and PS of S22, S24, S30,
The negative terminal of PS2 is connected with each other；C is in parallel with PS, and C2 is in parallel with PS2；
Forbid any 2 in S21, S22, S25 it is open-minded simultaneously, forbid any 2 in S23, S24, S27 while opening
It is logical；Opening S21, S30 can make Vjn be positive, and opening S23, S30 can make Vkn be positive, the end electricity that the amplitude of Vjn, Vkn are PS
Pressure；The amplitude of Vjn, Vkn are the end voltage of PS2；Opening S24, S25 can make Vjk be positive, and Vjk can be made by opening S22, S27
Negative, the amplitude of Vjk is the end voltage of PS2；S22, S30 or S24, S30 are opened simultaneously and can be made Vjn or Vkn 0 respectively；
So that Vkn or Vjn is positive respectively when M1 or M2 is in unsaturated, magnet valve can be made to tend to be saturated, Vjk, which is 0, to be made
Excitation decaying；Excitation voltage average value is directly proportional to accounting of this positive pulse width to ac cycle；Need to be promoted excitation level
The Shi Tigao accounting, reduces the accounting when needing to reduce excitation level；The voltage of PS is higher than PS2, is used for fast lifting excitation water
It is flat；
When needing quickly to reduce excitation horizontal (i.e. quickly demagnetization), S21, S22, S23, S24, S25, S26, S27 are closed, is opened
S30 is opened, closes S1 or S2 respectively when M1 or M2 is in unsaturated, makes that Vjn or Vkn are negative respectively and amplitude is by the end electricity of PS
Pressure is limited；
The present embodiment is easily controllable due to taking neutral point tie point as shown in fig. 7, be the deformation of Fig. 6 scheme.
S1 and S2 is thyristor, when needing quickly demagnetization and turn off S1 or S2, applies Vjn on it by CPS respectively
Or Vkn, so that thyristor is born backward voltage to turn off.
This scheme be in order to accelerate S1 in the conductive state or S2 shutdown, rather than as waiting it be in back-pressure oneself
Dynamic shutdown.
Thyristor applies the backward voltage of ms grades of short time, so that it may be turned off.Therefore S1 and S2 can use thyristor,
They can be opened by controlling pulse, back-pressure can also be added to turn off by BPS.In thyristor plus back-pressure, phase
Reinforce when in excitation, but the effect of ms grades of short time is also unlikely to increase excitation significantly.
After thyristor is turned off, this back-pressure can be removed.Due to magnetizing inductance characteristic, S1, S2 will be upper to evoke immediately very
High forward voltage, and this voltage can be limited in safe voltage by BPS, to realize the quick demagnetization of M1, M2.
Wherein, it is that the inverse-impedance type that constitutes of IGBT series diode switchs that S1 and S2, which can be,；
In the present invention, in above-mentioned switch, S1 and S2 are high power switch, need to flow through AC great current；And other
It can be the device of low current capacity.Wherein, S21, S22, S23, S24 can be high voltage low current IGBT either power
MOSFET, S25, S27 then can be the low current IGBT of lower voltage or power MOSFET, D26, D29 can be the small electricity of high pressure
Flow diode.
For in above-described embodiment 2,3,4 PS or PS2 be can current limliting, pressure limiting controllable voltage current source, characteristic
It showing as keeping output voltage controllable when gently to load, limitation output electric current is shown as when load down and is not increased.It limits defeated
Electric current is advantageous in that the output power of limitation power supply out.
Above-mentioned DC power supply PS, PS2 can be isolated form rectifier power source (including the HF switch powered by AC power source
Power supply), alternating current source can power from independent low-tension supply, be also possible to take energy from magnet valve interpole coil.Due to the control power supply
Power ratio magnet valve capacity it is much smaller, even electric energy is obtained from increasing magnet valve coil, also than conventional high current tap
Technique is simply more.
Case is embodied
Fig. 6 be it is of the invention can high-speed excitation/demagnetization without tap magnet valve embodiment.Wherein, the voltage rating of magnet valve is
35kV/500A, S1 and S2 use triode thyristor, S21, S22, S23, S24 using high voltage-small current IGBT and it is each it is reflexive simultaneously
Join a high voltage-small current diode；S25, S27 use the common IGBT of low current, and respectively one high voltage-small current of inverse parallel
Diode.D26 is high voltage-small current diode.PS1 is the pressure stabilizing current limiting power supplies of 5000V/10A, and PS2 is the pressure stabilizing of 500V/10A
Current limiting power supplies, C are the capacitor of 500uF/5000V.
Magnet valve, to thyristor plus trigger pulse, determines M1 or M2 according to the phase of detection V12 in even running mode
In unsaturated half cycle, for lower to excitation point application PS2(by opening S24, S25 on unsaturated corresponding excitation point
Voltage) forward voltage pulse, pass through pulse width modulation exciting current.
Magnet valve, to thyristor plus trigger pulse, determines M1 or M2 according to the phase of detection V12 in high-speed excitation mode
In unsaturated half cycle, for applying PS(higher electricity to excitation point by opening S21, S24 on unsaturated corresponding excitation point
Pressure) forward voltage pulse switch to even running mode when reaching excitation level, i.e., lead on corresponding excitation point
Cross open S25, S24 to excitation point apply a PS2(lower voltage) forward voltage pulse.
Magnet valve quickly demagnetization mode when, remove the trigger pulse of thyristor, according to detection V12 phase come determine M1 or
M2 is in unsaturated half cycle, for applying the forward direction of lower voltage on unsaturated corresponding excitation point by control S25, S27
Voltage pulse 1ms forces S1, S2 shutdown, is then shut off S25, S27, and by the reverse-conducting of S21, S24 or S23, S24 with
And PS limits the forward voltage on thyristor, so that magnet valve quickly demagnetizes, when demagnetization reaches controlled level, switches to
Even running mode.
Electric current by detecting M1 and M2 coil (such as L1 or L3) can also be by M1 when magnet valve saturation state is shallower
It is expanded to half period or more with M2 excitation con-trol range, to further speed up the speed of excitation and demagnetization.
Since the present invention mutually separates the saturation current of magnet valve with unsaturated electric current, it is only necessary to handle for excitation control circuit
The lower unsaturated electric current of current value, significantly reduces the capacity requirement of control circuit, it is easy to accomplish high-speed excitation, demagnetization control
Function processed improves the reliability and accuracy of control, reduces costs, is conducive to the popularization and application of magnet valve.
The above is only some preferable case study on implementation of the invention, is not done in any form to the present invention
Limitation, although the present invention is disclosed as above with preferable case study on implementation, however, it is not intended to limit the invention, any to be familiar with this profession
Technical staff made without departing from the scope of the present invention when using the structure and technology contents of the disclosure above
A little change or the equivalence enforcement case for being modified to equivalent variations, but anything that does not depart from the technical scheme of the invention,
According to the technical essence of the invention to any simple modification, equivalent change and modification made by the above case study on implementation, still belong to this
Within the scope of inventive technique scheme.
Claims (5)
1. a kind of no tap magnet valve structure, characterized in that including magnet valve main body MV and controllable electric power CPS, magnet valve main body MV includes
Magnet valve magnet M, coil L1, coil L2, coil L3, coil L4, inverse-impedance type switch S1 and inverse-impedance type switch S2；
The coil L1 and coil L2 are respectively positioned on magnetic pole M1, and coil L3 and coil L4 are respectively positioned on magnetic pole M2；Coil L1's is same
What name end and the non-same polarity of coil L3 were interconnected to constitute magnet valve main body MV exchanges end A1, the non-same polarity and coil of coil L2
The Same Name of Ends of L4 is interconnected to constitute the exchange end A2 of magnet valve main body MV, the non-same polarity of coil L1 and the non-same polarity of coil L4
It is interconnected to constitute neutral point N, the Same Name of Ends of coil L2 is connected with the negative terminal of inverse-impedance type switch S1 constitutes excitation point K, coil L3
Same Name of Ends be connected with the negative terminal of inverse-impedance type switch S2 composition excitation point J, the anode of inverse-impedance type switch S1 and inverse-impedance type switch S2
It is all connected with neutral point；Output N1, J1, K1 of controllable electric power CPS is connect with neutral point N, excitation point J and excitation point K respectively；
Exchange end A1, exchange end A2 are connect with alternating current circuit respectively, and exchange end A1 is exchange relative to the end voltage of exchange end A2
Voltage V12；Apply controllable electric power CPS between neutral point N, excitation point J or between neutral point N, excitation point K respectively
Forward voltage makes between coil L1, coil L3, and DC excitation current component is respectively flowed through between coil L2, coil L4；Magnetic pole M1
It is determined with the degree of saturation of magnetic pole M2 by V12 and DC excitation current component, V12 is timing, and magnetic pole M1 tends to be saturated；V12 is
When negative, magnetic pole M2 tends to be saturated；Magnetic pole M1 and the saturation of magnetic pole M2 are alternately present, and controllable electric power CPS is in excitation point J and neutral point
Apply forward voltage Vjn or controllable electric power CPS between N and applies forward voltage Vkn, Vjn between excitation point K and neutral point N
The magnetic pole M2 in saturation is acted on, its reversed excitation but unsaturation are made；Or Vkn acts on the magnetic pole M1 in saturation, makes it
Reversed excitation but unsaturation；
When the reversion of V12 voltage direction, magnetic pole M1 or magnetic pole M2 are easier to be saturated；Excitation voltage is controlled, magnetic pole M1, magnetic pole are adjusted
The magnetic saturation degree of M2, thus adjust the exchange end A1 of magnet valve main body MV with exchange the AC impedance between the both ends A2 of end；
When magnet valve needs high-speed excitation, excitation voltage is increased；Conversely, cutting inverse-impedance type is opened when magnet valve needs quickly demagnetization
S1 or inverse-impedance type switch S2 is closed, makes Vjn or Vkn that backward voltage be presented, realizes quickly demagnetization；Excitation and demagnetization voltage size by
To the control of controllable electric power CPS, controllable magnet valve high-speed excitation or demagnetization are realized.
2. no tap magnet valve structure according to claim 1, characterized in that controllable electric power CPS includes DC power supply PS, straight
Galvanic electricity source PS2 and switch switching unit；The switch switching unit includes inverse conductivity type switch S21, inverse conductivity type switch S22, inverse
Conductivity type switch S23, inverse conductivity type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, diode D26, storage capacitor C and storage
It can capacitor C2；Negative terminal against conductivity type switch S21, inverse conductivity type switch S25 is connected with the anode of inverse conductivity type switch S22, and composition can
Control the terminal J1 of power supply CPS；Inverse conductivity type switch S23, anode phase of the negative terminal with inverse conductivity type switch S24 against conductivity type switch S27
Connection constitutes the terminal K1 of controllable electric power CPS；Inverse conductivity type switch S25, against conductivity type switch S27 anode with diode D26's
Negative terminal is connected with each other, and the anode of diode D26 is connected with the anode of PS2；Inverse conductivity type switch S21, inverse conductivity type switch S23, directly
The anode for flowing power ps is connected with each other；Inverse conductivity type switch S22, inverse conductivity type switch S24, DC power supply PS, DC power supply PS2 are born
End is connected with each other；Storage capacitor C is in parallel with DC power supply PS, and storage capacitor C2 is in parallel with DC power supply PS2；
Forbid open-minded simultaneously against any 2 in conductivity type switch S23, inverse conductivity type switch S24, inverse conductivity type switch S27；Open inverse lead
Type switch S21, inverse conductivity type switch S24 can make Vjk be positive；
Controllable electric power CPS respectively excitation point J and excitation point K between apply voltage Vjk appropriate, open against conductivity type switch S22,
Inverse conductivity type switch S23 can make Vjk be negative, and the amplitude of Vjk is the end voltage of DC power supply PS；Open inverse conductivity type switch S24, inverse
Conductivity type switch S25 can make Vjk be positive, and open inverse conductivity type switch S22, inverse conductivity type switch S27 can make Vjk be negative, the width of Vjk
Degree is the end voltage of PS2；It inverse conductivity type switch S22, inverse conductivity type switch S24 while opening and can make Vjk 0；
When magnetic pole M1 or magnetic pole M2 is in unsaturated, so that Vkn or Vjn is positive respectively, magnet valve can be made to tend to be saturated, Vjk 0
Then excitation is made to decay；Excitation voltage average value is directly proportional to accounting of the positive pulse width to ac cycle；Need to be promoted excitation water
Accounting is usually improved, reduces accounting when needing to reduce excitation level；The voltage of DC power supply PS is higher than PS2, is used for fast lifting
Excitation is horizontal；
When needing quickly to reduce excitation level, close inverse conductivity type switch S21, inverse conductivity type switch S22, against conductivity type switch S23, against leading
Type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, close S1 or S2 when M1 or M2 is in unsaturated respectively, make
Vjk is negative and amplitude is limited by the end voltage of PS.
3. no tap magnet valve structure according to claim 1, characterized in that controllable electric power CPS includes DC power supply PS, straight
Galvanic electricity source PS2 and switch switching unit；Switching unit is switched by inverse conductivity type switch S21, inverse conductivity type switch S22, inverse conductivity type
S23, inverse conductivity type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, inverse conductivity type switch S30 and diode D26, D29, with
And storage capacitor C, storage capacitor C2 are constituted；Inverse conductivity type switch S21, against conductivity type switch S25 negative terminal with inverse conductivity type switch S22
Anode be connected constitute controllable electric power CPS terminal J1；Inverse conductivity type switch S23, against conductivity type switch S27 negative terminal with inverse conductivity type
The anode of switch S24 is connected to form the terminal K1 of controllable electric power CPS；The anode of diode D29 and inverse conductivity type switch S30 are just
End, which is connected, constitutes terminal N1；The cathode of the anode of inverse conductivity type switch S21 and inverse conductivity type switch S23 and diode D29 are and direct current
The anode of power ps is connected；The cathode of the anode and diode D26 of inverse conductivity type switch S25, inverse conductivity type switch S27 mutually interconnects
It connects, the anode of diode D26 is connected with the anode of DC power supply PS2；Inverse conductivity type switch S22, inverse conductivity type switch S24, against leading
The negative terminal of type switch S30 is connect with the negative terminal of DC power supply PS, DC power supply PS2；Storage capacitor C and DC power supply PS phase is simultaneously
Connection, storage capacitor C2 are in parallel with DC power supply PS2；
Inverse conductivity type switch S21, inverse conductivity type switch S22, forbid against any 2 in conductivity type switch S25 open-minded simultaneously, forbid against leading
Type switch S23, inverse conductivity type switch S24, any 2 in inverse conductivity type switch S27 while open-minded；Open inverse conductivity type switch S21, inverse
Conductivity type switch S30 can make Vjn be positive, and open inverse conductivity type switch S23, inverse conductivity type switch S30 can make Vkn be positive, Vjn, Vkn
Amplitude be DC power supply PS end voltage；It opens inverse conductivity type switch S24, Vjk can be made to be positive against conductivity type switch S25, it is open-minded
Inverse conductivity type switch S22, inverse conductivity type switch S27 can make Vjk be negative, and the amplitude of Vjk is the end voltage of DC power supply PS2；It is inverse to lead
Type switch S22, inverse conductivity type switch S30 or inverse conductivity type switch S24, can make respectively against conductivity type switch S30 while opening Vjn or
Vkn is 0；
So that Vkn or Vjn is positive respectively when magnetic pole M1 or magnetic pole M2 is in unsaturated, magnet valve can be made to tend to be saturated, Vjk 0
Then excitation is made to decay；Excitation voltage average value is directly proportional to accounting of this positive pulse width to ac cycle；It needs to promote excitation
The accounting is improved when horizontal, and the accounting is reduced when needing to reduce excitation level；The voltage of DC power supply PS is higher than DC power supply
PS2, it is horizontal for fast lifting excitation；
When needing quickly to reduce excitation level, close inverse conductivity type switch S21, inverse conductivity type switch S22, against conductivity type switch S23, against leading
Type switch S24, inverse conductivity type switch S25, inverse conductivity type switch S27, open inverse conductivity type switch S30, are in magnetic pole M1 or magnetic pole M2
S1 or S2 is closed when unsaturated respectively, makes that Vjn or Vkn are negative respectively and amplitude is limited by the end voltage of DC power supply PS.
4. no tap magnet valve structure according to claim 1, characterized in that inverse-impedance type switch S1 and inverse-impedance type switch S2 are equal
Pass through DC power supply CPS respectively when needing quickly demagnetization and turn off inverse-impedance type switch S1 or inverse-impedance type switch S2 for thyristor
Apply Vjn or Vkn, thyristor is made to bear backward voltage to turn off.
5. no tap magnet valve structure according to claim 1 or 2, characterized in that DC power supply PS and DC power supply PS2 are equal
For can current limliting, pressure limiting controllable voltage current source.
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| CN201710440708.2A CN107134957B (en) | 2017-06-12 | 2017-06-12 | Without tap magnet valve structure |
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| DE102018222183A1 (en) * | 2018-12-18 | 2020-06-18 | Siemens Aktiengesellschaft | Magnetically adjustable choke coil in series connection |
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