CN212695919U - High-voltage pulse generating device based on induction superposition principle - Google Patents
High-voltage pulse generating device based on induction superposition principle Download PDFInfo
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- CN212695919U CN212695919U CN202020284977.1U CN202020284977U CN212695919U CN 212695919 U CN212695919 U CN 212695919U CN 202020284977 U CN202020284977 U CN 202020284977U CN 212695919 U CN212695919 U CN 212695919U
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Abstract
The utility model discloses a high-voltage pulse generating device based on the induction superposition principle, including primary power source, cable output unit and induction superposition unit, the primary power source includes inductor, condenser and the switch that connects gradually in series, and the output of primary power source is connected with each cable input of cable output unit, and each cable output is connected to induction superposition unit; the pulse generated by the primary power source is output in parallel through a plurality of cables, the pulse output by each cable is fed into the induction cavity of the induction superposition unit, and finally the high-voltage pulse output to the load is realized at the secondary stage of the induction superposition unit. The utility model discloses essentially provide a high-voltage pulse based on response stack principle and produced circuit topological structure, can compromise two advantages of less switch quantity and shorter pulse rise time, do benefit to the not enough of overcoming current pulse generator existence.
Description
Technical Field
The utility model relates to a pulse power technical field, concretely relates to high-voltage pulse generating device based on response stack principle.
Background
In the field of pulse power technology and other high voltage research, the traditional methods for generating high voltage pulses are mainly Marx generators and pulse transformers. The Marx generator uses a plurality of capacitors charged in parallel and then discharged in series so that the voltages on the individual capacitors are superimposed to obtain a high voltage pulse. The pulse transformer boosts a pulse voltage generated by the discharge of the primary circuit using a step-up transformer, thereby obtaining a high-voltage pulse.
The Marx generator needs to use a plurality of switches, the switches are used as active devices, natural fault probability exists, and the higher the number of the switches is, the higher the fault probability is. The primary circuit of the pulse transformer only needs one discharge switch, and the pulse with enough high voltage can be obtained as long as the transformation ratio is large enough, but the pulse with fast rising front edge is difficult to obtain due to the large inductance of the secondary winding, which is disadvantageous in many application fields.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the existing Marx generator has instability caused by multiple switches, and a pulse transformer is difficult to obtain a pulse with a fast rising front edge; to this problem, the utility model provides a high-voltage pulse produces circuit topological structure based on response stack principle can compromise two advantages of less switch quantity and shorter pulse rise time.
The utility model discloses a following technical scheme realizes:
the high-voltage pulse generating device based on the induction superposition principle comprises a primary power source, a cable output unit and an induction superposition unit, wherein the primary power source comprises an inductor, a capacitor and a switch which are sequentially connected in series; the pulse generated by the primary power source is output in parallel through a plurality of cables, the pulse output by each cable is fed into the induction cavity of the induction superposition unit, and finally the high-voltage pulse output to the load is realized at the secondary stage of the induction superposition unit.
Further, the inductor has one end connected to ground and the other end connected to the capacitor, and the switch has one end connected to the capacitor and the other end connected to the cable output unit.
Further, the characteristic impedance of the primary power source satisfies Z ~ (L/C)1/2～ZlV (mn); wherein L represents an inductance value in the primary power source, C represents a capacitance value in the primary power source, and ZlRepresenting the cable impedance, m representing the number of cables and n representing the number of sensing chambers.
Further, the number n of the sensing cavities of the sensing superposition unit satisfies n ═ Ul/Ut(ii) a Wherein, UlRepresenting the voltage, U, required by the loadtRepresents the operating voltage of the cable;
further, the number m of cables fed in each sensing cavity: m ═ Zl/Zc(ii) a Wherein Z islIs the impedance of the cable, ZcRepresenting the impedance of a single sensing cavity.
Further, a single sensing chamber impedance ZcSatisfy Zc＝UlV (nI), wherein UlRepresenting the voltage required by the load, n representing the number of sensing cavities, and I representing the current required by the load.
Further, the primary power source employs a set of inductors, capacitors, and switches in series for generating a pulsed output.
Furthermore, the primary power source, the cable output unit and the induction superposition unit are sequentially connected in series, and the end parts of the primary power source and the induction superposition unit are grounded; and the output grounding circuit of the induction superposition unit is used for arranging a load.
The utility model discloses have following advantage and beneficial effect:
induced voltage superposition (IVA) is a major technological advance in the field of pulsed power, originally derived from the technological outline of the linear induction accelerator in the 60's of the 20 th centuryIt is to be understood that pulses output by a plurality of pulse sources with relatively low voltage levels are fed into the sensing cavity, and high voltage output is realized in a secondary level in an inductive superposition manner, as shown in fig. 1. The pulse transformer is a common high-voltage pulse generation technology, and the principle is as shown in figure 2, capacitor C and inductor L1And a switch G form a primary circuit, L1Is a primary inductance, L2Is a secondary inductor, Z is a load, and a low-voltage pulse generated by the discharge of a primary circuit passes through L1And L2The magnetic flux coupling of (a) generates a voltage pulse on the secondary circuit to load the load. A step-up transformer, L, is generally used2Greater than L1I.e. the secondary can obtain a high voltage pulse.
The pulse transformer cannot obtain a fast pulse rising front edge in principle due to large leakage inductance of a winding. Although the IVA contains a magnetic core, its inductance is not included in the main discharge loop, so that a fast leading edge pulse can be generated. However, to obtain high voltage by using the conventional IVA technique, a plurality of primary pulse sources are required, and many active elements such as switches are required, which is not favorable for realizing high reliability of the system.
The utility model discloses synthesize pulse transformer and IVA's advantage, propose based on the high-voltage pulse generator of response stack technique, utilize high tension cable to realize the multiplexed output that single switch primary power source produced the pulse, the pulse of multichannel cable transmission produces fast high voltage pulse through the response stack. Specifically, a primary loop is formed by a single switch and a capacitor, pulses generated by the primary loop are output through a plurality of groups of high-voltage cables, each group of high-voltage cables feeds electricity to one induction cavity, and high-voltage pulse output is achieved at the secondary level of the IVA. The method avoids the problem that the fast leading edge pulse cannot be generated due to the winding inductance of the pulse transformer, realizes the minimization of the number of switches, and is favorable for the high-reliability operation of the device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of an induced voltage adder; reference numbers and corresponding part names in fig. 1: a-a primary power source, B-a secondary rod;
FIG. 2 is a schematic diagram of a pulse transformer;
FIG. 3 is a schematic diagram of the structure of the high voltage pulse generator of the present invention; reference numbers and corresponding part names in fig. 3: 1-primary power source, 2-cable transmission unit, 3-induction superposition unit, L-inductor, C-capacitor, S switch, T-high voltage cable, M-magnetism and Lood-load.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
The embodiment provides a high-voltage pulse generating device based on an induction superposition principle, which comprises a primary power source, a cable output unit and an induction superposition unit, and is characterized in that the primary power source comprises an inductor, a capacitor and a switch which are sequentially connected in series, the output end of the primary power source is connected with each cable input end of the cable output unit, and each cable output end is connected to the induction superposition unit; the pulse generated by the primary power source is output in parallel through a plurality of cables, the pulse output by each cable is fed into the induction cavity of the induction superposition unit, and finally the high-voltage pulse output to the load is realized at the secondary stage of the induction superposition unit.
Example 2
The improvement is further improved on the basis of the embodiment 1, wherein one end of the inductor is grounded, the other end of the inductor is connected to the capacitor, one end of the switch is connected to the capacitor, and the other end of the switch is connected to the cable output unit. The cable transmission unit adopts a plurality of high-voltage cables which are connected in parallel and is used for transmitting the output pulse of the primary power source to the induction superposition unit; and configuring the impedance, the working voltage and the length of the cable according to the design requirements of physical parameters. The induction superposition unit realizes high voltage output by the induction superposition of the pulses transmitted by the plurality of cables through the plurality of groups of induction cavities.
The characteristic impedance of the primary power source meets Z to (L/C)1/2～ZlV (mn); the number n of the induction cavities of the induction superposition unit meets the condition that n is equal to Ul/Ut(ii) a Number m of cables fed in each sensing cavity: m ═ Zl/Zc(ii) a Impedance of single sensing cavity ZcSatisfy Zc＝Ul/(nI), where. Wherein L represents an inductance value in the primary power source, C represents a capacitance value in the primary power source, and ZlRepresenting the impedance of the cables, m representing the number of cables and n representing the number of sensing cavities; u shapelRepresenting the voltage, U, required by the loadtRepresents the operating voltage of the cable; zlIs the impedance of the cable, ZcRepresenting a single sensing cavity impedance; i load required current.
The primary power source, the cable output unit and the induction superposition unit are sequentially connected in series, the primary power source adopts a group of inductors, capacitors and switches which are connected in series for generating pulse output, one end of each inductor is grounded, the other end of each inductor is connected to the capacitor, and one end of each switch is connected to the capacitor and the other end of each switch is connected to the cable output unit; each cable output end of the cable output unit is connected to the induction cavity of the induction superposition unit, and the output end of the induction superposition unit is grounded through a line; and the output grounding circuit of the induction superposition unit is used for arranging a load.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The high-voltage pulse generating device based on the induction superposition principle comprises a primary power source, a cable output unit and an induction superposition unit, and is characterized in that the primary power source comprises an inductor, a capacitor and a switch which are sequentially connected in series, the output end of the primary power source is connected with each cable input end of the cable output unit, and each cable output end is connected to the induction superposition unit;
the pulse generated by the primary power source is output in parallel through a plurality of cables, the pulse output by each cable is fed into the induction cavity of the induction superposition unit, and finally the high-voltage pulse output to the load is realized at the secondary stage of the induction superposition unit.
2. The apparatus according to claim 1, wherein the inductor is grounded at one end and connected to a capacitor at the other end, and the switch is connected to the capacitor at one end and the cable output unit at the other end.
3. The high voltage pulse generator based on the inductive superposition principle as claimed in claim 1, wherein the characteristic impedance of the primary power source satisfies Z (L/C)1/2～ZlV (mn); wherein L represents an inductance value in the primary power source, C represents a capacitance value in the primary power source, and ZlRepresenting the cable impedance, m representing the number of cables and n representing the number of sensing chambers.
4. The high voltage pulse generator according to claim 2, wherein the number n of the sensing cavities of the sensing superposition unit satisfies n-U ═ U-l/Ut(ii) a Wherein, UlRepresenting the voltage, U, required by the loadtRepresenting the operating voltage of the cable.
5. A high voltage pulse generating device based on the inductive superposition principle according to claim 3, wherein the number m of cables fed into each inductive cavity is: m ═ Zl/Zc(ii) a Wherein Z islIs the impedance of the cable, ZcRepresenting the impedance of a single sensing cavity.
6. High voltage pulse generating device based on the inductive superposition principle according to claim 4, characterized by a single inductive cavity impedance ZcSatisfy Zc＝UlV (nI), where n denotes the number of sensing chambers, I loadRequires an electric current.
7. The inductive superposition principle-based high voltage pulse generating device according to any one of claims 1 to 6, characterized in that the primary power source employs a set of inductors, capacitors and switches in series for generating a pulse output.
8. The high-voltage pulse generating device based on the induction superposition principle as claimed in claim 7, wherein the primary power source, the cable output unit and the induction superposition unit are sequentially connected in series, and the ends of the primary power source and the induction superposition unit are grounded; and the output grounding circuit of the induction superposition unit is used for arranging a load.
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| CN111245280A (en) * | 2020-03-10 | 2020-06-05 | 中国工程物理研究院流体物理研究所 | High-voltage pulse generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111245280A (en) * | 2020-03-10 | 2020-06-05 | 中国工程物理研究院流体物理研究所 | High-voltage pulse generator |
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