Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
  • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
  • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
  • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback

Definitions

• the present invention relates to a device for He ⁇ generation of high voltage pulses according to the preamble of the main claim and a corresponding method.
• electrical power pulse technique Pulsed Power
• high-voltage and high ⁇ pulses are used by a few kW to several hundred TW amplitude for scientific and industrial purposes in the field, which are in ⁇ pulse take in the ps to ms range.
• Pulsge ⁇ generator for example, voltages of
• 250 kV can generate currents of a few 10 kA with a pulse duration of 1 ys to 2 ys.
• IVA inductive voltage adder
• the voltage sources are wired together in parallel in the stationary state, while the pulse phase are decoupled according to the prior art via an inductance and, due to the topology of the IVA to a series ⁇ circuit composed.
• the value of the inductance is defined by the geometry and the susceptibility of the core material.
• the Indukti ⁇ tivity must have a sufficiently high reaction up for the momentum to implement a series connection of voltage sources with each other without large losses by other mass- flowing through the inductor currents.
• the inductance for series connection of the voltage sources substantially determines the volume and cost of the IVA.
• FIG. 1 shows the conventional principle of an IVA.
• FIG. 1 shows the basic principle of the IVA using the example of four stages.
• a serial arrangement of voltage sources which are shown in Figure 1 on the left side, can be impulse lines, as shown on the right side of Figure 1, as
• Coupling inductances according to the embodiment of an IVA achieve.
• a compact structure is possible if an inductive power supply is used in the Addi ⁇ tion of impulse lines of individual stages in place of the term.
• the principle of voltage addition by means of magnetic feed, according to the IVA, is shown in FIG.
• Figure 2 shows a conventional embodiment of an IVA with magnetic isolation.
• Figure 2 shows six stages, the are arranged coaxially.
• Reference numeral 1 denotes a vacuum interface
• reference numeral 3 denotes a vacuum
• reference numeral 5 denotes an annular gap
• reference numeral 7 denotes a magnetic core
• reference numeral 9 denotes a particle beam gap for generating
• Electron or ion beams in vacuum and reference numeral 11 denotes oil.
• the cylindrical cavities form an inner conductor of the IVA and are fed radially by conventional, coaxially arranged voltage sources Ux.
• each of the individual cavities delivers a pulse of, for example, 0, 1 to 50 ys duration with a voltage amplitude UQ of a few kV, for example in
• the vector addition of the electromagnetic fields in the transition region to the coaxial transmission line is utilized.
• the IVA generates a voltage pulse, which is superimposed on the sum of the n (n: number of stages) individual voltage sources.
• an arrangement according to FIG. 2 generates a sixfold voltage pulse relative to the voltage sources Ux.
• the positive conductor of one voltage source is connected to the negative one of the following. As a result, a conductive connection between the center electrode and the downstream outer electrode is inevitably produced in each cavity.
• the impedance of the connection is greatly increased by increasing the relative permeability in this section.
• a partial volume of the voltage source is filled with toroidal cores made of ferromagnetic material.
• the duration for which the magnetic core can be considered as being unsaturated ⁇ is given by the cross-section of the toroidal core, as well as the sum of the remanent and saturation inductance.
• a suitable ferromagnetic material must have a high saturation inductance and a steep hysteresis curve. Since, in the known embodiments, the conductor geometry spans only a single turn, its cross-sectional area A must be sufficiently large in order to produce with the aid of this one turn a sufficiently large inductance having the desired impedance in the considered frequency range.
• the object is achieved by a device according to the main claim and a method according to the independent claim.
• a device for generating high-voltage pulses in particular an inductive
• Voltage adder claimed, wherein during the Pulserzeu ⁇ supply electromagnetic fields of a series n discrete along a Wellenausbreitungshauptachse arranged stages of voltage sources are combined in a transformer, wherein in each stage electromag ⁇ netic waves each propagate along a coaxial transmission line, wherein the electromagnetic waves per stage in the coaxial transmission line by means of pulse ⁇ streams by a Einkopplungsinduktterrorism generating number of discrete inductors, in particular, discrete coils are coupled which are so magnetically administratei ⁇ Nander coupled such that their magnetic fluxes along a plane to the wave propagation major axis rotations ⁇ symmetrical Layer circle and add.
• a method for generating high-voltage pulses in particular an inductive
• Voltage adder wherein during the Pulserzeu ⁇ supply electromagnetic fields of a series n discrete along a Wellenausbreitungshauptachse arranged stages of voltage sources are combined in a transformer, wherein in each stage electromagnetic waves propagate along each along a coaxial transmission ⁇ ons ein, wherein the electromagnetic waves per stage in the coaxial transmission line by means of pulse ⁇ currents through a coupling inductance generating Number of discrete inductors, in particular discrete coils are coupled, which are magnetically administratei ⁇ nander coupled to each other, that overlap their magnetic fluxes along a rotationally symmetrical to the wave propagation main axis circular line and add.
• the object of the invention is that a coupling from ⁇ finally takes place in particular toroidal coils and thereby a conventional external inductance with a large iron core is obsolete.
• the energy coupling then no longer takes place via radial transmission lines, but exclusively via the coupling of pulse currents in such toroidal coils within a coaxial arrangement.
• discrete inductors in particular in the form of discrete coils are spatially arranged in such a way that their fluxes are superimposed in egg ⁇ ner circumferential direction of a IVA-arrangement or decode ad- so that even without the use of common, annular iron cores, an arrangement is obtained which effectively minimizes stray magnetic fields which would conventionally lead to severe disturbances.
• this is made possible when the individual step voltages of the IVA are in the range of a few kV up to a few 10 kV, so that the discrete inductances or the discrete coils can be electrically isolated for these voltages with little effort.
• the necessary air gap is comparatively easy to electrically insulate.
• Advantages of the invention are a mass reduction of an iron core through the use of discrete coupled inductors or of discrete coupled coils, a more cost-effective, more compact design and thus a reduction tion of losses, especially at long pulse durations and a feasibility of long pulse durations, for example> 1 ys (microsecond).
• shafts may each propagate into a coaxial transmission line with all the coaxial transmission lines of the IVA sequentially arranged along a wave propagating main axis. Further advantageous embodiments are claimed in conjunction with the subclaims.
• Inductors of a stage along a wave extension main axis rotationally symmetric spatial extent to be arranged around the coaxial transmission line around.
• the rotationally symmetrical spatial extent can be created as a cross-sectional area surrounding the wave propagation main axis.
• the circumferential cross-sectional area may be a circular area and the rotationally symmetric spatial extent may be a torus.
• the inductances of a stage can be discrete coils that surround or enclose the circumferential cross-sectional area.
• the advantages of this form of inductive decoupling are that the value of the inductance can be massively increased due to the number of turns N with ⁇ means N 2 .
• the discrete coils can be arranged alongside one another along the circulation of the cross-sectional area.
• the discrete coils can each have, in particular two, mutually bifilar windings.
• the discrete coils may be arranged on a side facing the coaxial transmission line or on a radially extending side or in this. According to a further advantageous embodiment, the discrete coils can be generated as discrete air coils arranged along the rotationally symmetrical spatial extension.
• an air coil with a corresponding number of windings can be sufficient, in particular for short pulses, so that conventional restrictions such as saturability of a core material, cut-off frequency, high-frequency losses as a result of eddy currents and the like are avoided.
• conventional restrictions such as saturability of a core material, cut-off frequency, high-frequency losses as a result of eddy currents and the like are avoided.
• the rotationally symmetric spatial extent of a ferromagnetic material in particular an iron ring or ferrite ring, at least partially filled.
• the gap between two adjacent discrete coils of a ferromagnetic material, in particular an iron ring portion at least partially filled.
• the discrete coils can have wire windings produced by means of stranded wire, round wire or flat wire.
• the discrete coils may have two windings, in which a symmetrical feed of outer sides of a power supply and from this a symmetrical current drain in ei ⁇ ner center of the feed to be created on another side of an air gap.
• Figure 1 is a conventional embodiment of an IVA
• FIG. 2 shows a further conventional exemplary embodiment of an IVA
• FIG. 3 shows a first exemplary embodiment of second coils according to the invention
• Figure 4 shows a first embodiment of a erfindungsge ⁇ MAESS coil assembly
• Figure 5 shows a second embodiment of a erfindungsge ⁇ MAESS coil assembly
• FIG. 6 shows a further embodiment of a fiction, modern ⁇ discrete coil
• FIG. 7 is an illustration of an IVA with DC and mating signals
• FIG. 8 shows a third exemplary embodiment of a coil arrangement according to the invention.
• Figure 9 shows an embodiment of an inventive
• FIG. 3 shows a first embodiment of an OF INVENTION ⁇ to the invention the coil assembly.
• a corresponding embodiment of an inductive Isolati on of individual stages in an IVA is shown in FIG.
• the Isola tion is realized by means of discrete inductances, which are magnetically coupled with each other.
• Figure 3 shows a schematic representation of such coupled coils.
• FIG. 3 shows a detail of a coil arrangement according to the invention. According to this segment are two coils 21 along ei ⁇ nes iron ring 23 arranged in series.
• the magneti ⁇ rule flows ⁇ ] _ and ⁇ 2 are added so that a total flow ⁇ ⁇ ⁇ is obtained.
• a corresponding inductance PG P total / Bacular overall Figure 3 shows respective incoming currents Ij_ n and outgoing currents I Q ut- Di ese two coils 21 are coupled according to the present invention, so that the resulting total magnetic flux results.
• FIG. 4 shows a second exemplary embodiment of a coil arrangement according to the invention.
• FIG. 4 shows a schematic representation of an IVA with coupled coils.
• Reference numeral 21 denotes an arrangement of coils 21.
• Figure 4 shows a schematic sectional view of a IVA with diskre ⁇ th, magnetically coupled in the circumferential direction of the coil IVA elements or coils 21.
• the coils 21 are arranged in toroidal each stage. 13
• the coils Kings be ⁇ nen just inserted on another side of the Indukt foundeds Kunststoffe.
• FIG. 5 shows a third embodiment of an OF INVENTION ⁇ to the invention the coil assembly.
• FIG. 5 shows a plan view of the IVA with coupled discrete coils. Along a wave propagation main axis HA, the steps 13 of the IVA are arranged one behind the other.
• Reference numeral 15 denotes the first stage.
• Reference numeral 17 denotes a Rotati ⁇ onssymmetrische space extension which is formed as a torus ⁇ here 19th Around this torus are circumferentially arranged coils 21. net.
• the coils 21 are formed here as air coils.
• FIG. 5 shows a schematic representation of an IVA with the coils coupled according to the invention, wherein connections for feeding in and for removing current according to FIG. 3 are not shown.
• the coils 21 may be formed both as pure air coils, as well as air coils 21 with an iron core 23.
• Air coils here means that only windings are formed in surrounding air. Pure air-core coils 21 are single wound ⁇ Lich to an air-containing space. In general, long coil in which the coil length is significantly RESIZE ⁇ SSER than the coil diameter to minimize stray fields used.
• a possibly existing iron core 23 does not fill the entire reel interior volume, but can also represent only a portion of the coil volume.
• a Spuleninnenvo ⁇ For example, a lumen of the entirety of the coils of one stage is designed as a rotationally symmetrical spatial extension, for example as a torus 19.
• the coils 21 can be performed according to the prior art, for example, as wire coils ⁇ consisting of strands, round wire or flat wire. Similarly, band wound to coil 21 a possible embodiment. The coils 21 may alternatively be used as bifilar wound coils 21. Likewise, coils 21 are conceivable which consist of two coils in such a way. are set that a symmetrical feed to the two coils takes place respectively from the outer sides of the feed and a common outlet also takes place symmetrically in the middle of the feed on another side of the air gap.
• FIG. 6 shows a further embodiment of coils according to the invention.
• a coil 21 has been realized in the form of a bifilar winding.
• a bifilar winding utilizes the properties of DC and natural clock signals.
• the push-pull signals cause Indukti ⁇ tivity L by means of the addition of the magnetic flux lines.
• Reference numeral 23 denotes an iron ring around which are formed two mutually bifilar windings for generating a coil 21.
• Figure 7 shows a further inventivestrasbei ⁇ play a IVA.
• the coils 21 are formed with respective bifilar windings. Accordingly, Figure 7 shows a schematic representation of an IVA with distributed
• Reference numeral 13 denotes a respective stage of the IVA, and a stage 13 may also be referred to as a cavity.
• the stages 13 are equipped with created 25 which are formed axially symmetrically about a coaxial transmission line 27.
• Figure 7 shows the respective directions of the respective currents I, which as
• ⁇ Push-pull can be created.
• the constant ⁇ clock signal represents the pulse current, which is added over the n steps.
• the push-pull signal is the current that flows through the jewei ⁇ lige inductance L.
• Figure 7 shows the corresponding distribution of the DC and push-pull signals.
• FIG. 8 shows a further embodiment of an OF INVENTION ⁇ to the invention the coil assembly.
• a respective coil 21 is formed as a bifilar coil 21.
• FIG. 8 shows the steps 13 which are arranged along a wave propagation main axis HA.
• On the left half lines 25 are shown, which extend along the coaxial transmission line 27.
• On the right side of Figure 8 is shown an equivalent circuit diagram for describing the magnetic ⁇ insulation of a respective stage 13.
• Fi gure 8 is a schematic representation of a corresponding ⁇ IVA with the location of the discrete bifHaren coil 21.
• the discrete coils 21 are arranged in a line 25th
• the bifilar coil 21 are according to the invention distributed in each single toroidal ⁇ NEN stage 13, generally, there is a stage of a parallel arrangement of several submodules.
• Submodules conventionally mean the sum of all active electrical components or the voltage sources of a stage 13.
• the submodules for pulse generation are arranged in a plane of the IVA in a circle around the inner coaxial conductor, which provides the coaxial transmission line 27.
• the arrangement of the bifilar Spu ⁇ len 21 has the advantage that the respective inductances L are substantially less for the current pulse, or for shorter pulse durations.
• FIG. 9 shows an exemplary embodiment of a method according to the invention.
• high-voltage pulses are generated , in particular by means of an inductive voltage adder IVA generated.
• a first step S1 electromagnetic fields of a series circuit of a number n of discrete stages of voltage sources arranged along a wave propagation main axis in a transformer are combined during pulse generation.
• a second step S2 are Einkopplungsinduktterrorismen per stage as a number of discrete inductors, in particular, discrete coils are formed which are so magnetically coupled to each other such that their magnetic fluxes are superimposed along a rotationally symmetric circular line around the wave propagation main ⁇ axis and add.
• the Wellenausbreitungsmaschine ⁇ axis corresponds to the axis of symmetry of the coaxial
• the direction of the wave propagation main axis HA is the direction in which the electromagnetic waves mainly propagate from the first step to the last step.
• the present invention relates to a device and a method for generating high-voltage pulses, in particular by means of an inductive voltage adder IVA, wherein a decoupling inductance L per stage 13 as a number of discrete inductors, in particular discrete coils 21 is formed, the magnetic thus coupled to each other are that the magnetic fluxes are superimposed along a major axis to a wave propagation HA rotationssymmetri ⁇ rule circular line and / or add.

Landscapes

• Coils Of Transformers For General Uses (AREA)
• Magnetic Resonance Imaging Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50115847

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (15)

• 2013
  • 2013-04-23 DE DE102013207329.1A patent/DE102013207329A1/de not_active Withdrawn
• 2014
  • 2014-02-07 EP EP14705084.3A patent/EP2957032A1/de not_active Withdrawn
  • 2014-02-07 KR KR1020157033232A patent/KR101743135B1/ko active IP Right Grant
  • 2014-02-07 JP JP2016509330A patent/JP6257747B2/ja not_active Expired - Fee Related
  • 2014-02-07 WO PCT/EP2014/052413 patent/WO2014173553A1/de active Application Filing
  • 2014-02-07 BR BR112015026624A patent/BR112015026624A2/pt not_active IP Right Cessation
  • 2014-02-07 US US14/786,429 patent/US9887690B2/en not_active Expired - Fee Related

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events