A high-voltage pulse power supply

Abstract

The present invention relates to the field of high-voltage pulse technology, and provides a high-voltage pulse power supply, comprising 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 for providing power to the primary winding, and an output end for outputting the voltage of the secondary winding to a load, wherein the voltage of the primary winding is transmitted to the secondary winding via a transmission member, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and the inner diameter of the inner magnetic ring is smaller than the inner diameter of the outer magnetic ring. A high-voltage pulse power supply of the present invention uses a dual electromagnetic ring structure, which greatly reduces the volume compared to a traditional transformer structure. At the same time, it can achieve a higher working intensity after being encapsulated by glue; it uses a multi-stage boosting solution, utilizing a two-stage isolated electromagnetic ring structure to achieve multiple boosts, and the compact structure can ultimately stably generate an instantaneous high voltage of 100,000 to 150,000 volts.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage pulse technology, in particular to a high-voltage pulse power supply. Background Art

[0002] With economic development, atmospheric pollutants have become more diverse. Large amounts of industrial flue gas emissions have led to a sharp increase in nitrogen and sulfur compounds in the air, triggering numerous environmental problems. Acid rain pollution is particularly severe, severely damaging crops and electronic equipment, and posing a significant threat to people's health and property. This is primarily caused by the large amounts of sulfur and nitrogen compounds in industrial waste gas.

[0003] Chemical methods, addressing this new atmospheric pollution problem, face challenges such as bulky equipment, high investment and operating costs, and secondary pollution. In contrast, low-temperature plasma flue gas desulfurization technologies, including electron beam and pulse corona methods, offer strong market potential and application prospects, becoming a new flue gas desulfurization and denitrification process. The pulse corona method offers the lowest initial cost.

[0004] Currently, pulse power supplies used in the field of environmental protection mainly include microsecond pulse power supplies and nanosecond pulse power supplies. Among them, there are relatively more existing implementation plans for microsecond pulse power supplies, which are more common in the market; while nanosecond pulse power supplies are generally limited by factors such as transformer leakage inductance, and narrow pulse widths are generally achieved through a fully solid-state method, or by boosting the voltage through a pulse transformer, and then compressing the pulse width to the nanosecond level through pulse steepening technology. Pulse corona discharge desulfurization and denitrification technology requires a steeper pulse rising edge (nanosecond level) on the load side. Traditional microsecond pulse power supplies can no longer meet this requirement and require long-term operation. This places high demands on the pulse width, repetition frequency operation effect, switch life and other characteristics of the pulse power supply. In the existing technology, the high-voltage pulse power supply is generally large in size and complex in structure, which limits its promotion and use. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-voltage pulse power supply. By utilizing a two-stage isolated electromagnetic ring structure, multi-stage voltage amplification is achieved, and the instantaneous high voltage of 100,000 to 150,000 volts can be stably generated. The pulse power supply has the advantages of compact structure, stable performance, and easy implementation. It can be widely used in military, medical, environmental protection and other fields.

[0006] To achieve the above-mentioned objectives, an embodiment of the present invention provides the following technical solutions: a high-voltage pulse power supply, comprising 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 for providing power to the primary winding, and an output end for outputting the voltage of the secondary winding to a load, the voltage of the primary winding being transmitted to the secondary winding through a transmission member, the inner magnetic ring and the outer magnetic ring being concentrically arranged, and the inner diameter of the inner magnetic ring being smaller than the inner diameter of the outer magnetic ring.

[0007] Furthermore, the primary winding includes a first primary winding and a first secondary winding, the first secondary windings are connected in series and symmetrically wound on the inner magnetic ring, the first primary windings are connected in parallel and symmetrically wound on the first secondary winding, and the input end for providing power to the primary winding is connected to the ground end of the first primary winding.

[0008] Furthermore, the secondary winding includes a second primary winding and a second secondary winding, the second secondary windings are connected in series and symmetrically wound on the outer magnetic ring, the second primary windings are connected in parallel and symmetrically wound on the second secondary winding, and the first secondary winding is connected to the second primary winding through a wire, and is used to output the voltage of the secondary winding to the output end of the load connected to the second secondary winding.

[0009] Furthermore, a grounding end is provided inside the inner magnetic ring, and the grounding end is connected to the first primary winding through a wire. A grounding ring is provided 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 to the grounding ring through a wire.

[0010] Furthermore, it also includes multiple groups of boost capacitors and multiple groups of boost inductors, multiple groups of the boost capacitors are connected in series in the second secondary winding, and multiple groups of the boost inductors are connected in parallel with the second secondary winding.

[0011] Furthermore, the transmission member includes a transmission capacitor, which is provided 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.

[0012] Furthermore, the first primary winding includes a first primary winding P1, a second primary winding P2, a third primary winding P3 and a fourth primary winding P4 connected in parallel, and the first secondary winding includes a first secondary winding S1, a second secondary winding S2, a third secondary winding S3 and a fourth secondary winding S4 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 evenly and symmetrically wound on the inner magnetic ring 1 within a range of 90°, the first primary winding P1 is evenly and symmetrically wound on the first secondary winding S1, the second primary winding P2 is evenly and symmetrically wound on the second secondary winding S2, the third primary winding P3 is evenly and symmetrically wound on the third secondary winding S3, and the fourth primary winding P4 is evenly and symmetrically wound on the fourth secondary winding S4.

[0013] Further, the second primary winding 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 connected in parallel, and the second secondary winding 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 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 connected in series. It is evenly and symmetrically wound on the outer magnetic ring within a range of 60°, the fifth secondary winding S5 is evenly and symmetrically wound on the fifth primary winding P5, the sixth secondary winding S6 is evenly and symmetrically wound on the sixth primary winding P6, the seventh secondary winding S7 is evenly and symmetrically wound on the seventh primary winding P7, the eighth secondary winding S8 is evenly and symmetrically wound on the eighth primary winding P8, the ninth secondary winding S9 is evenly and symmetrically wound on the ninth primary winding P9, and the tenth secondary winding S10 is evenly and symmetrically wound on the tenth primary winding P10.

[0014] Furthermore, the second secondary winding includes six boost units connected in parallel, and the six boost units connected in parallel constitute a high-voltage generation circuit that can automatically complete voltage conversion and high voltage generation.

[0015] Furthermore, the input end is connected to the primary winding through a charging circuit, and the charging circuit includes an input power supply Uin, an energy storage capacitor C1, a first switch K1, and a second switch K2. The input end of the input power supply Uin is an input end for providing power to the primary winding, one end of the first switch K1 is connected to the input power supply Uin, one end of the energy storage capacitor C1 and one end of the second switch K2 are both connected to the other end of the input power supply Uin, the other end of the energy storage capacitor C1 is connected to the ground end of the first winding, and the other end of the second switch K2 is connected to the input end of the first winding.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The use of a double electromagnetic ring structure greatly reduces the volume compared to the traditional transformer structure. At the same time, it can achieve higher working strength after being encapsulated by glue.

[0018] 2. A multi-stage boosting solution is used, and a two-stage isolated electromagnetic ring structure is used to achieve multiple boosts. The compact structure can ultimately stably generate an instantaneous high voltage of 100,000 to 150,000 volts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a high-voltage pulse power supply provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the inner magnetic ring structure of a high-voltage pulse power supply provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the outer magnetic ring structure of a high-voltage pulse power supply provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a first circuit structure of a high-voltage pulse power supply provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a second circuit structure of a high-voltage pulse power supply provided by an embodiment of the present invention;

[0024] In the accompanying drawings: 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-ground end, 8-ground ring, 9-transfer capacitor, 10-boost capacitor, 11-boost inductor. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-4 An embodiment of the present invention provides a high-voltage pulse power supply, comprising 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 for providing power to the primary winding, and an output end for outputting the voltage of the secondary winding to a load, wherein the voltage of the primary winding is transmitted to the secondary winding via a transmission member, the inner magnetic ring and the outer magnetic ring are concentrically arranged, and the inner diameter of the inner magnetic ring is smaller than the 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 have a compact structure and greatly reduced volume. Preferably, after being potted with glue, a higher working intensity can be achieved, and the two-stage boosting can achieve an instantaneous high voltage of 0.5 to 10,000 volts, and the second boosting can output an instantaneous high voltage of 100,000 to 150,000 volts on a load resistor of 200 ohms.

[0027] The following are specific embodiments:

[0028] To optimize the above solution, please refer to Figure 1 、 Figure 2 and Figure 3 The primary winding 2 includes a first primary winding 201 and a first secondary winding 202. The first secondary winding 202 is 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. The input end 5 for providing power to the primary winding 2 is connected to the ground end of the first primary winding.

[0029] To further optimize the above solution, please refer to Figure 1 、 Figure 2 and Figure 3 The secondary winding 4 includes a second primary winding 401 and a second secondary winding 402. The second secondary winding 402 is 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 winding 402, and are used to output the voltage of the secondary winding 4 to the output terminal 6 of the load connected to the second secondary winding.

[0030] Specifically, the input terminal 5 is connected to the first primary winding 201 and is used to supply power to the first primary winding 201; the first secondary winding 202 is connected to the second primary winding 401 through a wire; the output terminal 6 is connected to the second secondary winding 402 and is used to provide pulse power to the load; the grounding terminal 7 is arranged inside the inner magnetic ring 1, and the grounding terminal 7 is connected to 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 to the grounding terminal 7, the second primary winding 401 and the second secondary winding 402 through wires.

[0031] As an optimization of the embodiment of the present invention, please refer to Figure 1 、 Figure 2 and Figure 3 The transfer member includes a transfer capacitor 9, wherein the transfer capacitor 9 is arranged between the first secondary winding 202 and the second primary winding 401, and the transfer capacitor 9, the first secondary winding 202 and the second primary winding 401 form a loop.

[0032] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 、 Figure 2 and Figure 3 , further comprising multiple groups of boost capacitors 10 and boost inductors 11, the multiple groups of boost capacitors 10 are connected in series in the second secondary winding 402, and the multiple groups of boost inductors 11 are connected in parallel with the second secondary winding 402.

[0033] As an optimization solution of the embodiment of the present invention, please refer to Figure 4The 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 connected in parallel, and 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 connected in series, wherein: the first secondary winding S1, the second secondary winding S2, the third secondary winding S3, and the fourth secondary winding S4 are evenly and symmetrically wound in a range of 90 degrees. On the inner magnetic ring 1, the first primary winding P1, the second primary winding P2, the third primary winding P3 and the fourth primary winding P4 are evenly and symmetrically wound on the corresponding secondary windings; the second primary winding 401 includes 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 connected in parallel, and the second secondary winding 402 includes the fifth secondary winding S5, the sixth secondary winding S6, the seventh primary winding P7, the eighth primary winding P8, the ninth primary winding P9 and the tenth primary winding P10 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 wound evenly and symmetrically on the outer magnetic ring 3 within a range of 60 degrees, and the fifth secondary winding S5, the sixth secondary winding S6, the seventh secondary winding S7, the eighth secondary winding S8, the ninth secondary winding S9 and the tenth secondary winding S10 are wound evenly and symmetrically on the outer magnetic ring 3 within a range of 60 degrees. The secondary winding S9 and the tenth secondary winding S10 are evenly and symmetrically wound on the corresponding secondary windings; the multiple groups of boost capacitors 10 include a first boost capacitor C3, a second boost capacitor C4, a third boost capacitor C5, a fourth boost capacitor C6, a fifth boost capacitor C7, and a sixth boost capacitor C8; the multiple groups of boost inductors 11 include a first boost inductor L1, a second boost inductor L2, a third boost inductor L3, a fourth boost inductor L4, a fifth boost inductor L5, and a sixth boost inductor L6.

[0034] As an optimization of the embodiment of the present invention, please refer to Figure 4 and Figure 5 The second secondary winding 402 includes six parallel-connected boost units. For example, the first and second boost units each include a first boost inductor L1, a first boost capacitor C3, and a fifth secondary winding S5. The first boost capacitor C3 and the fifth secondary winding S5 are connected in series, with the first boost inductor L1 connected in parallel across the series circuit. Meanwhile, the second boost unit includes a second boost inductor L2, a second boost capacitor C4, and a sixth secondary winding S6. The sixth secondary winding S6 is connected in series with the second boost capacitor C4 and in series with the capacitors and windings in the upper and lower boost units. Meanwhile, the second boost inductor L2 is connected in parallel across the series circuit. Specifically, the six LC units can form a high-voltage generation circuit, automatically completing voltage conversion and high-voltage generation.

[0035] 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-wirewound laminated inductor.

[0036] As an optimized solution of an embodiment of the present invention, the input terminal 5 is connected to the primary winding 2 via a charging circuit. The charging circuit includes an input power supply Uin, an energy storage capacitor C1, a first switch K1, and a second switch K2. The input terminal of the input power supply Uin is the input terminal 5 that provides power to the primary winding 2. One end of the first switch K1 is connected to the input power supply Uin, and the other end of the input power supply 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: first, close the first switch K1 and open the second switch K2 to charge the energy storage capacitor C1 using the power supply; when the power is fully charged, open the first switch K1 and close the second switch K2 to charge the primary winding 2 using the energy storage capacitor C1. Specifically, the first switch K1 and the second switch K2 can be one of a thyristor, an IGBT, or a MOSFET.

[0037] In specific operation, when the energy storage capacitor C1 is fully charged, the second switch K2 is closed to charge the first primary winding 201. Since the multiple windings of the first primary winding 201 are in parallel and the multiple windings of the first secondary winding 202 are in series, the first voltage boost of the power supply is achieved. By matching the turns ratio, after the first voltage boost, an instantaneous high voltage of 0.5 to 10,000 volts can be obtained on the transfer capacitor 9. Figure 4 The transfer capacitor 9 is represented by symbol C2. When the transfer capacitor 9 finishes charging and begins to discharge, the second primary winding 401 begins charging. Because the second primary winding 401 is connected in parallel and the second secondary winding 402 is connected in series, a secondary voltage boost is achieved, resulting in an instantaneous high voltage of 120,000 volts across a load resistor of 200 ohms. Under continuous operation at 15Hz, high voltage generation is consistent, stable, and reliable, achieving high voltage generation in a compact package.

[0038] Preferably, a third switch K3 may be added, and the third switch K3 is set between the transfer capacitor 9 and the first secondary winding 202, as shown in FIG. Figure 5 As shown, the setting of the third switch K3 can more efficiently utilize the energy in the transfer capacitor 9. When the transfer capacitor 9 is charged, the third switch K3 is closed, and when the transfer capacitor 9 is discharged, the third switch K3 is opened. The third switch K3 can be a thyristor, an IGBT, or a MOSFET. When using the third switch K3, a current sensor can be installed to achieve precise control of the third switch K3.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage pulse power supply, characterized in that: The invention 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 for providing power to the primary winding and an output end 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 member, the inner magnetic ring and the outer magnetic ring are concentrically arranged and the inner diameter of the inner magnetic ring is smaller than the inner diameter of the outer magnetic ring, the primary winding comprises a first primary winding and a first secondary winding, the first secondary windings are connected in series and symmetrically wound on the inner magnetic ring, the first primary windings are connected in parallel and symmetrically wound on the first secondary winding, the input end for providing power to the primary winding is connected to the ground end of the first primary winding, and the first primary winding comprises first primary windings P1 connected in parallel with each other , a second primary winding P2, a third primary winding P3 and a fourth primary winding P4, the first secondary winding includes a first secondary winding S1, a second secondary winding S2, a third secondary winding S3 and a fourth secondary winding S4 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 evenly and symmetrically wound on the inner magnetic ring 1 within a range of 90°, the first primary winding P1 is evenly and symmetrically wound on the first secondary winding S1, the second primary winding P2 is evenly and symmetrically wound on the second secondary winding S2, the third primary winding P3 is evenly and symmetrically wound on the third secondary winding S3, and the fourth primary winding P4 is evenly and symmetrically wound on the fourth secondary winding S4.

2. A high-voltage pulse power supply according to claim 1, characterized in that: The secondary winding includes a second primary winding and a second secondary winding, the second secondary windings are connected in series and symmetrically wound on the outer magnetic ring, the second primary windings are connected in parallel and symmetrically wound on the second secondary winding, the first secondary winding is connected to the second primary winding through a wire, and is used to output the voltage of the secondary winding to the output end of the load connected to the second secondary winding.

3. A high-voltage pulse power supply according to claim 2, characterized in that: A grounding end is provided inside the inner magnetic ring, and the grounding end is connected to the first primary winding through a wire. A grounding ring is provided 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 to the grounding ring through a wire.

4. A high-voltage pulse power supply according to claim 2, characterized in that: It also includes multiple groups of boost capacitors and multiple groups of boost inductors. The multiple groups of boost capacitors are connected in series in the second secondary winding, and the multiple groups of boost inductors are connected in parallel with the second secondary winding.

5. A high-voltage pulse power supply according to claim 2, characterized in that: The transmission member includes a transmission capacitor, which is provided between the first secondary winding and the second primary winding. The transmission capacitor, the first secondary winding, and the second primary winding form a loop.

6. A high-voltage pulse power supply according to claim 2, characterized in that: The second primary winding 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 connected in parallel, and the second secondary winding 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 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 connected in series according to 6 The fifth secondary winding S5 is evenly and symmetrically wound on the fifth primary winding P5, the sixth secondary winding S6 is evenly and symmetrically wound on the sixth primary winding P6, the seventh secondary winding S7 is evenly and symmetrically wound on the seventh primary winding P7, the eighth secondary winding S8 is evenly and symmetrically wound on the eighth primary winding P8, the ninth secondary winding S9 is evenly and symmetrically wound on the ninth primary winding P9, and the tenth secondary winding S10 is evenly and symmetrically wound on the tenth primary winding P10.

7. A high-voltage pulse power supply according to claim 2, characterized in that: The second secondary winding includes six boosting units connected in parallel, and the six boosting units connected in parallel form a high-voltage generating circuit that can automatically complete voltage conversion and high voltage generation.

8. A high-voltage pulse power supply according to claim 1, characterized in that: The input end is connected to the primary winding through a charging circuit. The charging circuit includes an input power supply Uin, an energy storage capacitor C1, a first switch K1, and a second switch K2. The input end of the input power supply Uin is an input end for providing power to the primary winding. One end of the first switch K1 is connected to the input power supply Uin, one end of the energy storage capacitor C1 and one end of the second switch K2 are both connected to the other end of the input power supply Uin, the other end of the energy storage capacitor C1 is connected to the ground end of the first primary winding, and the other end of the second switch K2 is connected to the input end of the first primary winding.

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