阅读说明：本技术 一种高压脉冲电源 (High-voltage pulse power supply ) 是由 杨毅 刘华宜 王涛 古小琴 蔡静 邵璐 于 2019-12-20 设计创作，主要内容包括：本发明涉及高压脉冲技术领域,提供了一种高压脉冲电源,包括内磁环、外磁环、缠绕在所述内磁环上的一级绕组、缠绕在所述外磁环上的二级绕组、用于给所述一级绕组提供电源的输入端以及用于输出所述二级绕组的电压至负载的输出端,所述一级绕组的电压通过传递件传递至所述二级绕组上,所述内磁环和所述外磁环同心设置且所述内磁环的内径小于所述外磁环的内径。本发明的一种高压脉冲电源,使用了双电磁环结构,相比传统的变压器结构,大幅度减少了体积,同时,通过灌胶封装后能够实现较高的工作强度；使用了多级升压方案,利用两级隔离式电磁环结构实现多次升压,使用紧凑结构最终能稳定产生10至15万伏的瞬时高压。(The invention relates to the technical field of high-voltage pulse, and provides a high-voltage pulse power supply which comprises an inner magnetic ring, an outer magnetic ring, a primary winding wound on the inner magnetic ring, a secondary winding wound on the outer magnetic ring, an input end used for providing power for the primary winding, and an output end used for outputting the voltage of the secondary winding to a load, wherein the voltage of the primary winding is transmitted to the secondary winding through a transmission piece, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and the inner diameter of the inner magnetic ring is smaller than that of the outer magnetic ring. According to the high-voltage pulse power supply, the double electromagnetic ring structure is adopted, the size is greatly reduced compared with the traditional transformer structure, and meanwhile, higher working strength can be realized after glue pouring and packaging; a multi-stage boosting scheme is used, multiple boosting is realized by utilizing a two-stage isolation type electromagnetic ring structure, and the instantaneous high voltage of 10-15 ten thousand volts can be stably generated finally by using a compact structure.)

1. A high-voltage pulse power supply, characterized by: the transformer comprises an inner magnetic ring, an outer magnetic ring, a primary winding wound on the inner magnetic ring, a secondary winding wound on the outer magnetic ring, an input end used for providing power for the primary winding and an output end used for outputting the voltage of the secondary winding to a load, wherein the voltage of the primary winding is transmitted to the secondary winding through a transmission piece, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and the inner diameter of the inner magnetic ring is smaller than that of the outer magnetic ring.

2. A high voltage pulse power supply according to claim 1, wherein: the primary winding comprises a first primary winding and a first secondary winding, the first secondary winding is connected in series and symmetrically wound on the inner magnetic ring, the first primary winding is connected in parallel and symmetrically wound on the first secondary winding, and an input end for supplying power to the primary winding is connected with a grounding end of the first primary winding.

3. A high voltage pulse power supply according to claim 2, wherein: the secondary winding comprises a second primary winding and a second secondary winding, the second secondary winding is connected in series and symmetrically wound on the outer magnetic ring, the second primary winding is connected in parallel and symmetrically wound on the second secondary winding, the first secondary winding is connected with the second primary winding through a wire, and an output end for outputting the voltage of the secondary winding to a load is connected with the second secondary winding.

4. A high voltage pulse power supply according to claim 3, wherein: the inner magnetic ring is internally provided with a grounding end, the grounding end is connected with the first primary winding through a lead, a grounding ring is arranged between the inner magnetic ring and the outer magnetic ring, and the grounding end, the second primary winding and the second secondary winding are all connected with the grounding ring through leads.

5. A high voltage pulse power supply according to claim 3, wherein: the boost circuit further comprises a plurality of groups of boost capacitors and a plurality of groups of boost inductors, wherein the plurality of groups of boost capacitors are connected in series in the second secondary winding, and the plurality of groups of boost inductors are connected in parallel with the second secondary winding.

6. A high voltage pulse power supply according to claim 3, wherein: the transmission part comprises a transmission capacitor, the transmission capacitor is arranged between the first secondary winding and the second primary winding, and the transmission capacitor, the first secondary winding and the second primary winding form a loop.

7. A high voltage pulse power supply according to claim 2, wherein: the first primary winding comprises a first primary winding P1, a second primary winding P2, a third primary winding P3 and a fourth primary winding P4 which are mutually connected in parallel, and the first secondary winding comprises a first secondary winding S1, a second secondary winding S2, a third secondary winding S3 and a fourth secondary winding S4 which are mutually connected in series; the first secondary winding S1, the second secondary winding S2, the third secondary winding S3 and the fourth secondary winding S4 are uniformly and symmetrically wound around the inner magnetic ring 1 in a 90-degree range, the first primary winding P1 is uniformly and symmetrically wound around the first secondary winding S1, the second primary winding P2 is uniformly and symmetrically wound around the second secondary winding S2, the third primary winding P3 is uniformly and symmetrically wound around the third secondary winding S3, and the fourth primary winding P4 is uniformly and symmetrically wound around the fourth secondary winding S4.

8. A high voltage pulse power supply according to claim 3, wherein: the second primary winding comprises a fifth primary winding P5, a sixth primary winding P6, a seventh primary winding P7, an eighth primary winding P8, a ninth primary winding P9 and a tenth primary winding P10 which are mutually connected in parallel, and the second secondary winding comprises a fifth secondary winding S5, a sixth secondary winding S6, a seventh secondary winding S7, an eighth secondary winding S8, a ninth secondary winding S9 and a tenth secondary winding S10 which are mutually connected in series; the fifth primary winding P5, the sixth primary winding P6, the seventh primary winding P7, the eighth primary winding P8, the ninth primary winding P9 and the tenth primary winding P10 are uniformly and symmetrically wound on the outer magnetic ring according to the range of 60 degrees, the fifth secondary winding S5 is uniformly and symmetrically wound on the fifth primary winding P5, the sixth secondary winding S6 is uniformly and symmetrically wound on the sixth primary winding P6, the seventh secondary winding S7 is uniformly and symmetrically wound on the seventh primary winding P7, the eighth secondary winding S8 is uniformly and symmetrically wound on the eighth primary winding P8, the ninth secondary winding S9 is uniformly and symmetrically wound on the ninth primary winding P9, the tenth secondary winding S10 is uniformly and symmetrically wound on the tenth primary winding P10.

9. A high voltage pulse power supply according to claim 1, wherein: the second secondary winding comprises six boosting units which are connected in parallel, and the six boosting units which are connected in parallel form a high-voltage generating loop which can automatically complete voltage conversion and high-voltage generation.

10. A high voltage pulse power supply according to claim 1, wherein: the input passes through charging circuit and connects the primary winding, charging circuit includes input power Uin, energy storage capacitor C1, first switch K1 and second switch K2, the input of input power Uin is for the input that the primary winding provided the power, the one end of first switch K1 is connected the input power Uin, energy storage capacitor C1's one end with the one end of second switch K2 all with the other end of input power Uin is connected, energy storage capacitor C1's the other end is connected the earthing terminal of first winding, the other end of second switch K2 is connected the input of first winding.

Technical Field

The invention relates to the technical field of high-voltage pulse, in particular to a high-voltage pulse power supply.

Background

With the development of economy, the pollutants in the atmosphere are diversified, and the content of nitride and sulfide in the air is sharply increased due to the emission of a large amount of industrial flue gas, and a plurality of environmental problems are caused. The problem of acid rain pollution is particularly remarkable, a large number of crops and electronic equipment are seriously damaged, and people from health to all properties are greatly threatened, which is mainly caused by a large number of sulfur and nitrogen compounds in industrial waste gas.

Aiming at the new problem of air pollution, the chemical method has the problems of huge equipment, high investment and operation cost, secondary pollution and the like, and compared with the low-temperature plasma flue gas desulfurization technology comprising an electron beam method and a pulse corona method, the low-temperature plasma flue gas desulfurization technology has strong market potential and application prospect, and is a new flue gas desulfurization and denitration technology. The pulse corona method has the lowest one-time consumption.

The pulse power supply applied to the field of environmental protection mainly comprises a microsecond pulse power supply and a nanosecond pulse power supply. The microsecond-level pulse power supply has relatively more existing implementation schemes and is common in the market; due to the limitation of transformer leakage inductance and other factors, the nanosecond pulse power supply generally realizes narrow pulse width in a full solid state mode, or boosts the voltage through a pulse transformer and compresses the pulse width to nanosecond level through a pulse sharpening technology. The pulse corona discharge desulfurization and denitrification technology needs to generate a steep pulse rising edge (nanosecond level) on a load side, a traditional microsecond pulse power supply cannot meet the requirement and needs to work for a long time, the requirements on the characteristics of pulse width, repetition frequency operation effect, switch service life and the like of the pulse power supply are high, and in the prior art, the power supply universally existing in the high-voltage pulse power supply is large in size, complex in structure and limited in popularization and use.

Disclosure of Invention

The invention aims to provide a high-voltage pulse power supply, which realizes multi-stage amplification of voltage by utilizing a two-stage isolation electromagnetic ring structure, can stably generate instantaneous high voltage of 10 to 15 ten thousand volts, has the advantages of compact structure, stable performance, easy realization and the like, and can be widely applied to the fields of military affairs, medical treatment, environmental protection and the like.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions: a high-voltage pulse power supply comprises an inner magnetic ring, an outer magnetic ring, a primary winding wound on the inner magnetic ring, a secondary winding wound on the outer magnetic ring, an input end used for providing power for the primary winding and an output end used for outputting the voltage of the secondary winding to a load, wherein the voltage of the primary winding is transmitted to the secondary winding through a transmission piece, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and the inner diameter of the inner magnetic ring is smaller than that of the outer magnetic ring.

Further, the primary winding comprises a first primary winding and a first secondary winding, the first secondary winding is connected in series and symmetrically wound on the inner magnetic ring, the first primary winding is connected in parallel and symmetrically wound on the first secondary winding, and an input end for supplying power to the primary winding is connected with a grounding end of the first primary winding.

Further, the secondary winding comprises a second primary winding and a second secondary winding, the second secondary winding is connected in series and symmetrically wound on the outer magnetic ring, the second primary winding is connected in parallel and symmetrically wound on the second secondary winding, the first secondary winding is connected with the second primary winding through a wire, and an output end for outputting the voltage of the secondary winding to a load is connected with the second secondary winding.

Furthermore, the inner magnetic ring is internally provided with a grounding end, the grounding end is connected with the first primary winding through a lead, a grounding ring is arranged between the inner magnetic ring and the outer magnetic ring, and the grounding end, the second primary winding and the second secondary winding are all connected with the grounding ring through leads.

The multi-secondary winding is characterized by further comprising a plurality of groups of boosting capacitors and a plurality of groups of boosting inductors, wherein the boosting capacitors are connected in series in the second secondary winding, and the boosting inductors are connected with the second secondary winding in parallel.

Further, the transmission part comprises a transmission capacitor, the transmission capacitor is arranged between the first secondary winding and the second primary winding, and the transmission capacitor, the first secondary winding and the second primary winding form a loop.

Further, the first primary winding comprises a first primary winding P1, a second primary winding P2, a third primary winding P3 and a fourth primary winding P4 which are connected in parallel, and the first secondary winding comprises a first secondary winding S1, a second secondary winding S2, a third secondary winding S3 and a fourth secondary winding S4 which are connected in series; the first secondary winding S1, the second secondary winding S2, the third secondary winding S3 and the fourth secondary winding S4 are uniformly and symmetrically wound around the inner magnetic ring 1 in a 90-degree range, the first primary winding P1 is uniformly and symmetrically wound around the first secondary winding S1, the second primary winding P2 is uniformly and symmetrically wound around the second secondary winding S2, the third primary winding P3 is uniformly and symmetrically wound around the third secondary winding S3, and the fourth primary winding P4 is uniformly and symmetrically wound around the fourth secondary winding S4.

Further, the second primary winding comprises a fifth primary winding P5, a sixth primary winding P6, a seventh primary winding P7, an eighth primary winding P8, a ninth primary winding P9 and a tenth primary winding P10 which are connected in parallel, and the second secondary winding comprises a fifth secondary winding S5, a sixth secondary winding S6, a seventh secondary winding S7, an eighth secondary winding S8, a ninth secondary winding S9 and a tenth secondary winding S10 which are connected in series; the fifth primary winding P5, the sixth primary winding P6, the seventh primary winding P7, the eighth primary winding P8, the ninth primary winding P9 and the tenth primary winding P10 are uniformly and symmetrically wound on the outer magnetic ring according to the range of 60 degrees, the fifth secondary winding S5 is uniformly and symmetrically wound on the fifth primary winding P5, the sixth secondary winding S6 is uniformly and symmetrically wound on the sixth primary winding P6, the seventh secondary winding S7 is uniformly and symmetrically wound on the seventh primary winding P7, the eighth secondary winding S8 is uniformly and symmetrically wound on the eighth primary winding P8, the ninth secondary winding S9 is uniformly and symmetrically wound on the ninth primary winding P9, the tenth secondary winding S10 is uniformly and symmetrically wound on the tenth primary winding P10.

Furthermore, the second secondary winding comprises six boosting units connected in parallel, and the six boosting units connected in parallel form a high-voltage generating loop capable of automatically completing voltage conversion and high-voltage generation.

Further, the input passes through charging circuit and connects the primary winding, charging circuit includes input power Uin, energy storage capacitor C1, first switch K1 and second switch K2, input power Uin's input is for the input that the primary winding provided the power, first switch K1's one end is connected input power Uin, energy storage capacitor C1's one end with second switch K2's one end all with input power Uin's the other end is connected, energy storage capacitor C1's the other end is connected the earthing terminal of first winding, second switch K2's the other end is connected the input of first winding.

Compared with the prior art, the invention has the beneficial effects that:

1. the double-electromagnetic-ring structure is used, the size is greatly reduced compared with the traditional transformer structure, and meanwhile, higher working strength can be realized after encapsulation through glue pouring.

2. A multi-stage boosting scheme is used, multiple boosting is realized by utilizing a two-stage isolation type electromagnetic ring structure, and the instantaneous high voltage of 10-15 ten thousand volts can be stably generated finally by using a compact structure.

Drawings

Fig. 1 is a schematic structural diagram of a high voltage pulse power supply according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal magnetic ring structure of a high voltage pulse power supply according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an external magnetic ring structure of a high-voltage pulse power supply according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a first circuit structure of a high-voltage pulse power supply according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a second circuit structure of a high-voltage pulse power supply according to an embodiment of the invention;

in the reference symbols: 1-inner magnetic ring, 2-primary winding, 201-first primary winding, 202-first secondary winding, 3-outer magnetic ring, 4-secondary winding, 401-second primary winding, 402-second secondary winding, 5-input end, 6-output end, 7-grounding end, 8-grounding ring, 9-transfer capacitor, 10-boosting capacitor and 11-boosting inductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention provides a high voltage pulse power supply, including an inner magnetic ring, an outer magnetic ring, a primary winding wound around the inner magnetic ring, a secondary winding wound around the outer magnetic ring, an input terminal for providing power to the primary winding, and an output terminal for outputting a voltage of the secondary winding to a load, where the voltage of the primary winding is transmitted to the secondary winding through a transmission element, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and an inner diameter of the inner magnetic ring is smaller than an inner diameter of the outer magnetic ring. In this embodiment, the inner magnetic ring and the outer magnetic ring are two-stage isolated electromagnetic rings, which are compact in structure and greatly reduce the volume, preferably, the two-stage boosting can be realized with high working strength after encapsulation by potting, wherein the first boosting can reach an instantaneous high voltage of 0.5 to 1 ten thousand volts, and the second boosting can output an instantaneous high voltage of 10 to 15 ten thousand volts on a 200 ohm load resistor.

The following are specific examples:

in order to optimize the above scheme, referring to fig. 1, fig. 2 and fig. 3, the primary winding 2 includes a first primary winding 201 and a first secondary winding 202, the first secondary windings 202 are connected in series and symmetrically wound on the inner magnetic ring 1, the first primary windings 201 are connected in parallel and symmetrically wound on the first secondary winding 202, and the input terminal 5 for supplying power to the primary winding 2 is connected to a ground terminal of the first primary winding.

Further optimizing the above scheme, referring to fig. 1, fig. 2 and fig. 3, the secondary winding 4 includes a second primary winding 401 and a second secondary winding 402, the second secondary windings 402 are connected in series and symmetrically wound on the outer magnetic ring 3, the second primary windings 401 are connected in parallel and symmetrically wound on the second secondary windings 402, and the output terminal 6 for outputting the voltage of the secondary winding 4 to the load is connected to the second secondary winding.

Specifically, the input terminal 5 is connected to the first primary winding 201 and is used for supplying power to the first primary winding 201; the first secondary winding 202 is connected with the second primary winding 401 through a wire; the output end 6 is connected with the second secondary winding 402 and is used for providing pulse power supply for a load; the grounding end 7 is arranged inside the inner magnetic ring 1, and the grounding end 7 is connected with the first primary winding 201 through a wire; the grounding ring 8 is arranged between the inner magnetic ring 1 and the outer magnetic ring 3, and the grounding ring 8 is respectively connected with the grounding terminal 7, the second primary winding 401 and the second secondary winding 402 through wires.

As an optimization of the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 3, the transfer component includes a transfer capacitor 9, wherein: the transfer capacitor 9 is disposed between the first secondary winding 202 and the second primary winding 401, and the transfer capacitor 9 forms a loop with the first secondary winding 202 and the second primary winding 401.

As an optimized solution of the embodiment of the present invention, please refer to fig. 1, fig. 2, and fig. 3, further including a plurality of sets of boost capacitors 10 and boost inductors 11, wherein the plurality of sets of boost capacitors 10 are connected in series in the second secondary winding 402, and the plurality of sets of boost inductors 11 are connected in parallel with the second secondary winding 402.

As an optimized solution of the embodiment of the present invention, please refer to fig. 4, the first primary winding 201 includes a first primary winding P1, a second primary winding P2, a third primary winding P3, and a fourth primary winding P4 that are connected in parallel, the first secondary winding 202 includes a first secondary winding S1, a second secondary winding S2, a third secondary winding S3, and a fourth secondary winding S4 that are connected in series, where: the first secondary winding S1, the second secondary winding S2, the third secondary winding S3 and the fourth secondary winding S4 are uniformly and symmetrically wound on the inner magnetic ring 1 according to the range of 90 degrees, and the first primary winding P1, the second primary winding P2, the third primary winding P3 and the fourth primary winding P4 are uniformly and symmetrically wound on the corresponding secondary windings; the second primary winding 401 includes a fifth primary winding P5, a sixth primary winding P6, a seventh primary winding P7, an eighth primary winding P8, a ninth primary winding P9 and a tenth primary winding P10, which are connected in parallel, and the second secondary winding 402 includes a fifth secondary winding S5, a sixth secondary winding S6, a seventh secondary winding S7, an eighth secondary winding S8, a ninth secondary winding S9 and a tenth secondary winding S10, which are connected in series, wherein: a fifth primary winding P5, a sixth primary winding P6, a seventh primary winding P7, an eighth primary winding P8, a ninth primary winding P9 and a tenth primary winding P10 are uniformly and symmetrically wound on the outer magnetic ring 3 according to the range of 60 degrees, and a fifth secondary winding S5, a sixth secondary winding S6, a seventh secondary winding S7, an eighth secondary winding S8, a ninth secondary winding S9 and a tenth secondary winding S10 are uniformly and symmetrically wound on the corresponding secondary windings; the multiple groups of boosting capacitors 10 include a first boosting capacitor C3, a second boosting capacitor C4, a third boosting capacitor C5, a fourth boosting capacitor C6, a fifth boosting capacitor C7 and a sixth boosting capacitor C8, and the multiple groups of boosting inductors 11 include a first boosting inductor L1, a second boosting inductor L2, a third boosting inductor L3, a fourth boosting inductor L4, a fifth boosting inductor L5 and a sixth boosting inductor L6.

As an optimization of the embodiment of the present invention, please refer to fig. 4 and 5, the second secondary winding 402 includes six voltage boosting units connected in parallel, wherein, taking the first voltage boosting unit and the second voltage boosting unit as an example, the first voltage boosting unit includes a first voltage boosting inductor L1, a first voltage boosting capacitor C3 and a fifth secondary winding S5, the first voltage boosting capacitor C3 and the fifth secondary winding S5 are connected in series, the first voltage boosting inductor L1 is connected in parallel at two ends of the series circuit, meanwhile, the second voltage boosting unit includes a second voltage boosting inductor L2, a second voltage boosting capacitor C4 and a sixth secondary winding S6, the sixth secondary winding S6 and the second voltage boosting capacitor C4 are connected in series and are connected in series with the capacitors and windings in the upper and lower voltage boosting units, and the second voltage boosting inductor L2 is connected in parallel at two ends of the series circuit. Specifically, the 6 LC cells can form a high voltage generating circuit, and automatically perform voltage conversion and high voltage generation.

Preferably, the inner magnetic ring 1 and the outer magnetic ring 3 are amorphous magnetic rings or manganese zinc ferrite magnetic rings. The capacitor is a ceramic capacitor, and the inductor is a solid non-winding laminated inductor.

As an optimized solution of the embodiment of the present invention, the input terminal 5 is connected to the primary winding 2 through a charging circuit, the charging circuit includes an input power source Uin, an energy storage capacitor C1, a first switch K1, and a second switch K2, the input terminal of the input power source Uin is the input terminal 5 for supplying power to the primary winding 2, one end of the first switch K1 is connected to the input power source Uin, the other end of the input power source Uin is respectively connected to one end of the energy storage capacitor C1 and one end of the second switch K2, the other end of the energy storage capacitor C1 is connected to the ground terminal of the first primary winding 201, and the other end of the second switch K2 is connected to the input terminal of the first primary winding 201. The actual charging process is as follows: firstly, a first switch K1 is closed, a second switch K2 is opened, and a power supply is used for charging an energy storage capacitor C1; when the charge is full, the first switch K1 is opened, the second switch K2 is closed, and the energy storage capacitor C1 is used to charge the primary winding 2. Specifically, the first switch K1 and the second switch K2 may be one of a thyristor, an IGBT, or a MOSFET.

The concrete during operation: after the energy storage capacitor C1 is charged, the second switch K2 is closed to realize the charging of the first primary winding 201, because the plurality of windings of the first primary winding 201 are in a parallel structure and the plurality of windings of the first secondary winding 202 are in a series structure, the first boosting of the power supply is realized, by matching the turn ratio, after the first boosting, an instantaneous high voltage of 0.5 to 1 ten thousand volts can be obtained on the transfer capacitor 9, the transfer capacitor 9 is represented by a symbol C2 in fig. 4, when the transfer capacitor 9 is charged and starts to discharge, the second primary winding 401 starts to be charged, because the second primary winding 401 is in a parallel structure and the second secondary winding 402 is in a series structure, the secondary boosting can be realized, and an instantaneous high voltage of 12 ten thousand volts can be obtained on a load resistor 200 ohms. Under the condition of 15Hz continuous operation, the high voltage generation consistency is good, stable and reliable, and the high voltage generation under small volume is realized.

Preferably, a third switch K3 may be added, a third switch K3 is disposed between the transfer capacitor 9 and the first secondary winding 202, as shown in fig. 5, the third switch K3 is disposed to more efficiently utilize the energy in the transfer capacitor 9, the third switch K3 is closed when the transfer capacitor 9 is charged, the third switch K3 is opened when the transfer capacitor 9 is discharged, the third switch K3 may be one of a thyristor, an IGBT or a MOSFET, and a current sensor may be cooperatively mounted to realize precise control of the third switch K3 when the third switch K3 is used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.