Magnetic pulse compression method

Abstract

This invention provides a magnetic pulse compression method, comprising: applying a positive voltage to a magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression, generating a first compression pulse; and applying a reverse voltage to the magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression, generating a second compression pulse. The magnetic pulse compression method provided by this invention can provide two high-voltage pulses, improving the discharge efficiency of the high-voltage pulse.

Description

Technical Field

[0001] This invention relates to the field of pulse power technology, and more specifically to a magnetic pulse compression method. Background Technology

[0002] An excimer laser is a large-volume, high-pressure pulsed discharge laser device. Its operating characteristics dictate that it must possess high power density and a short excitation pulse rise time. A magnetic switch is a passive, all-solid-state switch. Essentially, it is a saturable inductor with variable inductance. It utilizes the saturation process of the inductor to switch between off and on states, enabling high-voltage, high-current pulses of tens of kV and above. However, after each saturation cycle, the magnetic flux of the core must be reset to zero to ensure that the pulse operation in the circuit remains consistently stable.

[0003] Currently, with the deepening research into laser technology, the average output power required for excimer lasers is constantly increasing, which in turn demands high repetition rates. Consequently, the reset time for the magnetic switch becomes shorter, limiting its desaturation and necessitating higher voltages and greater power.

[0004] Therefore, how to stably generate high-voltage fast pulse excitation and improve the overall performance of excimer lasers has become one of the key research areas for excimer lasers. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned technical problems, the magnetic pulse compression method provided by this invention can provide two high-voltage pulses, thereby improving the discharge efficiency of the high-voltage pulses.

[0007] (II) Technical Solution

[0008] The magnetic pulse compression method provided by the present invention includes: applying a positive voltage to a magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression and generate a first compression pulse; and applying a reverse voltage to the magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression and generate a second compression pulse.

[0009] (III) Beneficial Effects

[0010] Compared with the prior art, the magnetic pulse compression method provided by the present invention utilizes the biphasic nature of the magnetic pulse compression unit. By applying a positive voltage and a reverse voltage to the magnetic pulse compression unit respectively, it can generate a first compression pulse and a second compression pulse. The magnetic pulse compression method provided by the present invention improves the discharge efficiency of high voltage pulses. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the magnetic pulse compression circuit used in the first embodiment of the present invention;

[0013] Figure 2 This is a flowchart of a magnetic pulse compression method according to a first embodiment of the present invention;

[0014] Figures 3A-3D The equivalent circuit diagram for the working principle of the magnetic pulse compression method according to the first embodiment of the present invention is shown below.

[0015] Figure 4 This is a schematic diagram of the magnetic pulse compression circuit used in the second embodiment of the present invention;

[0016] Figure 5 This is a flowchart of a magnetic pulse compression method according to a second embodiment of the present invention;

[0017] Figures 6A-6D The equivalent circuit diagram for the working principle of the magnetic pulse compression method according to the second embodiment of the present invention is shown. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To better understand this invention, the following is combined with... Figure 1 The magnetic pulse compression circuit structure used in the first embodiment of the present invention will be briefly introduced.

[0020] like Figure 1 As shown, the magnetic pulse compression circuit used in the first embodiment of the present invention has a single-stage magnetic pulse compression unit, namely the first magnetic pulse compression unit MS1. For ease of distinction, this first magnetic pulse compression circuit can be... Figure 1 The lower part of the magnetic pulse compression circuit is the upper part of the magnetic pulse compression circuit.

[0021] The first and second magnetic pulse compression circuits share the first magnetic pulse compression unit MS1. Both magnetic pulse compression circuits perform pulse compression through the first magnetic pulse compression unit MS1. The two magnetic pulse compression circuits also mutually desaturate through the first magnetic pulse compression unit MS1.

[0022] Specifically, the first magnetic pulse compression unit MS1 is composed of a first primary coil and a first secondary coil with mutual inductance. The first primary coil is a saturable inductor of the first magnetic pulse compression circuit, while the first secondary coil is a saturable inductor of the second magnetic pulse compression circuit.

[0023] The currents flowing through the first primary coil and the second primary coil are in opposite directions. For ease of distinction, this positive direction can be set, for example, as... Figure 1 The first magnetic pulse compression circuit in the circuit runs from left to right; correspondingly, setting the reverse direction is... Figure 1 The second magnetic pulse compression circuit in the circuit runs from right to left.

[0024] The following is combined Figure 1 ,right Figure 2 The flow chart of the magnetic pulse compression method of the first embodiment of the present invention is described in detail.

[0025] like Figure 2 As shown, the first embodiment of the present invention provides a magnetic pulse compression method, including the following steps:

[0026] S1l, apply a positive voltage to the first magnetic pulse compression unit MS1 to cause the first magnetic pulse compression unit MS1 to perform pulse compression and generate a first compression pulse;

[0027] S12, apply a reverse voltage to the first magnetic pulse compression unit MS1 to cause the first magnetic pulse compression unit MS1 to perform pulse compression and generate a second compression pulse.

[0028] It should be noted that the order of steps S11 and S12 can be interchanged, and this invention does not impose any restrictions on this. That is, the order in which the forward or reverse voltage is applied to the first magnetic pulse compression unit MS1 is not limited.

[0029] See Figure 1 In the first magnetic pulse compression circuit, the first magnetic pulse compression unit MS1 is applied with a positive voltage, while the first magnetic pulse compression unit MS1 located in the second magnetic pulse compression circuit is applied with a reverse voltage.

[0030] In this embodiment, a positive voltage and a reverse voltage are alternately applied to the first magnetic pulse compression unit MS1 so that the first magnetic pulse compression unit MS1 desaturates while compressing the pulse. Thus, the positive voltage and the reverse voltage applied to the first magnetic pulse compression unit MS1 alternate to achieve automatic desaturation of the first magnetic pulse compression unit MS1.

[0031] The first magnetic pulse compression unit MS1 is a single-stage magnetic pulse compression unit, consisting of a primary coil and a secondary coil with mutual inductance. The primary coil and the secondary coil are located in the circuits where a forward voltage is applied and a reverse voltage is applied, respectively, which are the first magnetic pulse compression circuit and the second magnetic pulse compression circuit.

[0032] The magnetic pulse compression method of this embodiment includes: applying a positive voltage to a primary coil to generate a first compression pulse; and applying a reverse voltage to a secondary coil to desaturate the primary coil and generate a second compression pulse.

[0033] The magnetic pulse compression method of this embodiment further includes: applying a reverse voltage to the secondary coil to generate a second compression pulse; and applying a positive voltage to the primary coil to desaturate the secondary coil and generate a first compression pulse.

[0034] Therefore, this embodiment achieves automatic desaturation of the primary and secondary coils of the first magnetic pulse compression unit MS1 while alternately applying voltage for pulse compression.

[0035] In this embodiment, a control unit is used to alternately apply positive and reverse voltages to the first magnetic pulse compression unit MS1.

[0036] For example, you can refer to Figure 1 In this embodiment, the opening and closing of the first closed switch Q1 and the second closed switch Q2 can control the conduction of the first magnetic pulse compression circuit and the second magnetic pulse compression circuit, so as to alternately apply voltage to the primary coil and the secondary coil of the first magnetic pulse compression unit MS1, respectively.

[0037] Specifically, see Figure 1 The circuit structure of the control unit may include: a first high-voltage DC power supply HV1, a first primary capacitor C01, and a first transformer T1, wherein the first high-voltage DC power supply HV1 and the first primary capacitor C01 are connected in parallel and then connected to the primary side of the first transformer T1 through a first closed switch Q1; the circuit structure of the control unit may also include a second high-voltage DC power supply HV2, a second primary capacitor C02, and a second transformer T2, wherein the second high-voltage DC power supply HV2 and the second primary capacitor C02 are connected in parallel and then connected to the primary side of the second transformer T2 through a second closed switch Q2.

[0038] The first high-voltage DC power supply HV1 is used to charge the first primary capacitor C01, and the first closed switch Q1 is used to turn on the power supply to transfer the stored electrical energy of the first primary capacitor C01 to the first transformer T1. Similarly, the second high-voltage DC power supply HV2 is used to charge the second primary capacitor C02, and the second closed switch Q2 is used to turn on the power supply to transfer the stored electrical energy of the second primary capacitor C02 to the second transformer T2.

[0039] It should be noted that, in other embodiments, the specific circuit structure of the control unit is not limited by the present invention; that is, the circuit structure of the control unit is not limited to that shown below. Figure 1 The circuit structure shown can also have other circuit structures, as long as they can alternately apply positive and reverse voltages to the magnetic pulse compression unit.

[0040] For example, in other embodiments, to further improve control accuracy, the control unit may also include a controller ( Figure 1 (Not shown in the diagram) This controller is used to control the opening and closing times of the first closed switch Q1 and the second closed switch Q2. The present invention does not specifically limit the structure, number, or location of this controller.

[0041] In this embodiment, a voltage is applied to the first magnetic pulse compression unit MS1 through a stage capacitor, the power of which is provided by a transformer.

[0042] For example, you can refer to Figure 1 In the first magnetic pulse compression circuit, capacitor C1 is the primary capacitor, and transformer T1 is the first transformer. Capacitor C1 is charged through the secondary side of the first transformer T1. After being charged, capacitor C1 can be used as the source of the positive voltage applied to the first magnetic pulse compression unit MS1.

[0043] In the second magnetic pulse compression circuit, capacitor C4 is the primary capacitor, and the transformer is the second transformer T2. Capacitor C4 is charged through the secondary side of the second transformer T2. The charged capacitor C4 can then be used as the source of the reverse voltage applied to the first magnetic pulse compression unit MS1.

[0044] The first transformer, T1, is used for isolation and energy transfer, and also serves to regulate voltage, enabling the stage capacitor to obtain a controllable forward voltage. Similarly, the second transformer, T2, is also used for isolation and energy transfer, and also serves to regulate voltage, enabling the stage capacitor to obtain a controllable reverse voltage.

[0045] It should be noted that in other embodiments, the arrangement of this stage capacitor and transformer may differ. Figure 1 The circuit structure shown can serve as a source for the alternating application of voltage by the magnetic pulse compression unit.

[0046] The following is combined Figures 3A-3DThe working principle of the magnetic pulse compression method of the first embodiment of the present invention will be briefly explained.

[0047] First, it should be noted that the working principle of the magnetic pulse compression method mainly includes four states in sequence: the initial state of the first magnetic pulse compression circuit, the positive saturation state of the first magnetic pulse compression circuit, the initial state of the second magnetic pulse compression circuit, and the negative saturation state of the second magnetic pulse compression circuit.

[0048] Figure 3A This is an equivalent circuit diagram of the initial state of the first magnetic pulse compression circuit according to the first embodiment of the present invention.

[0049] See Figure 3A In the initial state of the first magnetic pulse compression circuit: the first magnetic pulse compression unit MS1 is made to reach reverse saturation. At this time, since the forward impedance of MS1 is very large, MS1 is equivalent to a diode that is reverse conducting and forward cut off.

[0050] Figure 3B This is a schematic diagram of the equivalent circuit of the first magnetic pulse compression circuit in the positive saturation state according to the first embodiment of the present invention.

[0051] See Figure 3B The first magnetic pulse compression circuit enters the forward saturation state: when the first primary capacitor C01 is fully charged, the first closed switch Q1 is closed. At this time, the first primary capacitor C01, which is charged with high voltage, and the primary side of the first transformer T1 form a circuit. The first high voltage capacitor C1 is charged through the secondary side of the first transformer T1. As the charging time of the first high voltage capacitor C1 is extended, the magnetic core of the first magnetic pulse compression unit MS1 reaches forward saturation. Since the forward impedance of MS1 is very small, MS1 is equivalent to a diode that is forward conducting and reverse cut off. The first high voltage capacitor C1, the first primary coil, and the second high voltage capacitor C2 form a CLC resonance. The energy of the first high voltage capacitor C1 is quickly transferred to the second high voltage capacitor C2.

[0052] Furthermore, the energy on the second high-voltage capacitor C2 is rapidly discharged through the first electrode R1.

[0053] Figure 3C This is an equivalent circuit diagram of the initial state of the second magnetic pulse compression circuit according to the first embodiment of the present invention.

[0054] See Figure 3C Entering the initial state of the second magnetic pulse compression circuit: the first closed switch Q1 is open, and at this time MS1 is still equivalent to a diode that is forward-conducting and reverse-cut off.

[0055] Figure 3D This is a schematic diagram of the equivalent circuit of the second magnetic pulse compression circuit in the reverse saturation state according to the first embodiment of the present invention.

[0056] See Figure 3D The second magnetic pulse compression circuit enters the reverse saturation state: when the second primary capacitor C02 is fully charged, the second closed switch Q2 is closed. At this time, the second primary capacitor C02, which is charged with high voltage, forms a circuit with the primary side of the second transformer T2. The fourth high voltage capacitor C4 is charged through the secondary side of the second transformer T2. As the charging time of the fourth high voltage capacitor C4 increases, the magnetic core of the first magnetic pulse compression unit MS1 reaches reverse saturation. Since the reverse impedance of MS1 is very small, MS1 is equivalent to a diode that is reverse-conducting and forward-cut off. The fourth high voltage capacitor C4, the first primary coil, and the third high voltage capacitor C3 form a CLC resonance. The energy of the fourth high voltage capacitor C4 is quickly transferred to the third high voltage capacitor C3.

[0057] Furthermore, the energy on the third high-voltage capacitor C3 is rapidly discharged through the second electrode R2.

[0058] Because the magnetic core of the first magnetic pulse compression unit MS1 reaches reverse saturation as the charging time of the fourth high-voltage capacitor C4 increases during the reverse saturation state of the second magnetic pulse compression circuit, the primary coil of the second magnetic pulse compression circuit desaturates the primary coil of the first magnetic pulse compression circuit. That is, the two magnetic pulse compression circuits mutually desaturate while compressing the pulse. Therefore, this invention utilizes the saturation and desaturation characteristics of bidirectional pulse compression to eliminate the need for a magnetic core desaturation circuit, thereby increasing the pulse compression efficiency of the magnetic switch.

[0059] For the sake of brevity, the magnetic pulse compression method of the second embodiment of the present invention will not repeat the features that are the same as or similar to those of the first embodiment. Only the features that are different from those of the first embodiment will be described below.

[0060] First, in order to better understand the present invention, the following will be combined with Figure 4 The magnetic pulse compression circuit structure used in the second embodiment of the present invention will be briefly introduced.

[0061] like Figure 4 As shown, the magnetic pulse compression circuit used in the second embodiment of the present invention has a two-stage magnetic pulse compression unit, namely a first magnetic pulse compression unit MS1 and a second magnetic pulse compression unit MS2. Both the first magnetic pulse compression circuit and the second magnetic pulse compression circuit share the first magnetic pulse compression unit MS1 and the second magnetic pulse compression unit MS2.

[0062] Both magnetic pulse compression circuits perform pulse compression through a first magnetic pulse compression unit MS1 and a second magnetic pulse compression unit MS2. The two magnetic pulse compression circuits also mutually desaturate through the first magnetic pulse compression unit MS1 and the second magnetic pulse compression unit MS2.

[0063] The first magnetic pulse compression unit MS1 is composed of a first primary coil and a first secondary coil with mutual inductance, and the second magnetic pulse compression unit MS2 is composed of a second primary coil and a second secondary coil with mutual inductance. Both the first and second primary coils are saturable inductors of the first magnetic pulse compression circuit, and both the first and second secondary coils are saturable inductors of the second magnetic pulse compression circuit.

[0064] Since both the first and second primary coils belong to the first magnetic pulse compression circuit, the current flowing through them is in the same direction, for example, it can be positive. However, both the first and second primary coils belong to the second magnetic pulse compression circuit, which is a different magnetic pulse compression circuit from the first one. Therefore, the current flowing through them is in opposite directions.

[0065] Understandably, based on Figure 1 and Figure 4 The magnetic pulse compression circuit shown can be used to derive any circuit structure with at least two stages of magnetic pulse compression.

[0066] The following is combined Figure 4 ,right Figure 5 The flow chart of the magnetic pulse compression method of the second embodiment of the present invention will be described in detail.

[0067] like Figure 5 As shown, the magnetic pulse compression method provided in the second embodiment of the present invention includes the following steps:

[0068] S21, apply a positive voltage to at least two stages of magnetic pulse compression units to cause the at least two stages of magnetic pulse compression units to perform pulse compression and generate a first compression pulse;

[0069] S22, apply a reverse voltage to at least two stages of magnetic pulse compression units to cause the at least two stages of magnetic pulse compression units to perform pulse compression and generate a second compression pulse.

[0070] The order of steps S21 and S22 can be interchanged, and the present invention does not impose any restrictions on this. That is, the order in which the forward or reverse voltage is applied to at least two stages of magnetic pulse compression units is not limited.

[0071] In this embodiment, both the first primary coil and the second primary coil are located in the first magnetic pulse compression circuit where a positive voltage is applied, while both the first primary coil and the second secondary coil are located in the second magnetic pulse compression circuit where a reverse voltage is applied. It should be noted that the naming of the primary and secondary coils is merely to distinguish the two coils contained in each magnetic pulse compression unit. The first primary coil and the first secondary coil constitute two coils of the same magnetic pulse compression unit; the specific positions of the two coils are not specifically limited in this invention. Similarly, the second primary coil and the second secondary coil constitute two coils of another magnetic pulse compression unit; the specific positions of the two coils are not specifically limited in this invention.

[0072] It should also be noted that in other embodiments, the number of stages of the magnetic pulse compression unit is not fixed, and those skilled in the art can set it according to actual needs; this invention does not limit this. Furthermore, each primary coil in each stage of the magnetic pulse compression unit is located in the circuit where a positive voltage is applied, while each secondary coil is located in the circuit where a reverse voltage is applied.

[0073] The magnetic pulse compression method of this embodiment further includes: applying a positive voltage to the first primary coil and the second primary coil to generate a first compression pulse; and applying a reverse voltage to the first primary coil and the second primary coil to desaturate the first primary coil and the second primary coil and generate a second compression pulse.

[0074] The magnetic pulse compression method of this embodiment further includes: applying a reverse voltage to the first primary coil and the second primary coil to generate a second compression pulse; and applying a positive voltage to the first primary coil and the second primary coil to desaturate the first primary coil and the second primary coil and generate a first compression pulse.

[0075] It should be noted that this embodiment can be extended to a multi-stage magnetic pulse compression unit. The magnetic pulse compression method of the second embodiment of the present invention can be applied to any multi-stage magnetic pulse compression unit. While applying voltage alternately to the multi-stage magnetic pulse compression unit to perform pulse compression, the desaturation of each primary coil and each secondary coil is achieved.

[0076] In this embodiment, at least two stages of magnetic pulse compression units are cascaded in opposite sequences in the forward and reverse directions. See also... Figure 4 In this embodiment, the first magnetic pulse compression circuit performs pulse compression sequentially through the first primary coil and the second primary coil, while the second magnetic pulse compression circuit performs pulse compression sequentially through the second primary coil and the first primary coil.

[0077] In other embodiments, for example, in at least two stages of magnetic pulse compression units, the order in which the pulse compression of the first magnetic pulse compression circuit and the second magnetic pulse compression circuit passes through the magnetic pulse compression units is exactly the opposite.

[0078] A positive voltage is applied to at least two stages of magnetic pulse compression units, wherein the compression pulse generated by the preceding stage magnetic pulse compression unit is passed to the next stage magnetic pulse compression unit, so that the last stage magnetic pulse compression unit generates a first compression pulse. A reverse voltage is applied to at least two stages of magnetic pulse compression units, wherein the compression pulse generated by the preceding stage magnetic pulse compression unit is passed to the next stage magnetic pulse compression unit, so that the last stage magnetic pulse compression unit generates a second compression pulse.

[0079] Therefore, this embodiment refines the pulse compression process between the preceding and following stages in at least two-stage magnetic pulse compression units. In the first magnetic pulse compression circuit of this embodiment, the compressed pulse generated by the first primary coil of the first magnetic pulse compression unit MS1 is first transmitted to the second primary coil of the second magnetic pulse compression unit MS2 to generate a first compressed pulse. In other embodiments, when the number of magnetic pulse compression units exceeds two, the compressed pulse generated by the previous stage magnetic pulse compression unit is also transmitted to the next stage magnetic pulse compression unit until the last stage magnetic pulse compression unit generates the first compressed pulse.

[0080] In this embodiment, when voltage is applied to at least two stages of magnetic pulse compression units, there are at least two stages of capacitors. By transferring the electrical energy of the previous stage capacitor to the next stage capacitor, the last stage capacitor applies voltage to the last stage magnetic pulse compression unit.

[0081] For example, you can refer to Figure 4 When the magnetic pulse compression unit is a two-stage magnetic pulse compression unit, there are two stage capacitors. The power of the later stage capacitor C6 is provided by the earlier stage capacitor C5, until the last stage capacitor C6 applies voltage to the last stage magnetic pulse compression unit MS2.

[0082] The following is combined Figures 6A-6D The working principle of the magnetic pulse compression method of the second embodiment of the present invention will be briefly explained.

[0083] Figure 6A This is an equivalent circuit diagram of the initial state of the first magnetic pulse compression circuit according to the second embodiment of the present invention.

[0084] See Figure 6A In the initial state of the first magnetic pulse compression circuit: the first magnetic pulse compression unit MS1 and the second magnetic pulse compression unit MS2 are simultaneously made to reach reverse saturation. At this time, since the forward impedance of MS1 and MS2 is very large, MS1 and MS2 are equivalent to diodes that are reverse conducting and forward cut off.

[0085] Figure 6B This is a schematic diagram of the equivalent circuit of the first magnetic pulse compression circuit in the positive saturation state according to the second embodiment of the present invention.

[0086] See Figure 6B The first magnetic pulse compression circuit enters the forward saturation state: when the first primary capacitor C01 is fully charged, the first closed switch Q1 is closed. At this time, the first primary capacitor C01, which is charged with high voltage, and the primary side of the first transformer T1 form a circuit. The fifth high voltage capacitor C5 is charged through the secondary side of the first transformer T1. As the charging time of the fifth high voltage capacitor C5 increases, the magnetic core of the first magnetic pulse compression unit MS1 reaches forward saturation first. Since the forward impedance of MS1 is very small, MS1 is equivalent to a diode that is forward conducting and reverse cut off. The fifth high voltage capacitor C5, the first primary coil and the sixth high voltage capacitor C6 form a CLC resonance. The energy of the fifth high voltage capacitor C5 is quickly transferred to the sixth high voltage capacitor C6.

[0087] As time goes on, the high voltage of the sixth high-voltage capacitor C6 causes the magnetic core of the second magnetic pulse compression unit MS2 to reach forward saturation. At this time, MS2 is also equivalent to a diode that is forward conducting and reverse cut off. The sixth high-voltage capacitor C6, the second primary coil and the seventh high-voltage capacitor C7 form a CLC resonance, and the energy of the sixth high-voltage capacitor C6 is quickly transferred to the seventh high-voltage capacitor C7.

[0088] Furthermore, the energy on the seventh high-voltage capacitor C7 is rapidly discharged through the first electrode R1.

[0089] Figure 6C This is an equivalent circuit diagram of the initial state of the second magnetic pulse compression circuit according to the second embodiment of the present invention.

[0090] See Figure 6C Entering the initial state of the second magnetic pulse compression circuit: the first closed switch Q1 is open, and at this time MS1 and MS2 are still equivalent to diodes that are forward-conducting and reverse-cut off.

[0091] Figure 6D This is a schematic diagram of the equivalent circuit of the second magnetic pulse compression circuit in the reverse saturation state according to the second embodiment of the present invention.

[0092] See Figure 6D The second magnetic pulse compression circuit enters the reverse saturation state: when the second primary capacitor C02 is fully charged, the second closed switch Q2 is closed. At this time, the high-voltage second primary capacitor C02 and the primary side of the second transformer T2 form a circuit. The tenth high-voltage capacitor C10 is charged through the secondary side of the second transformer T2. As the charging time of the tenth high-voltage capacitor C10 increases, the magnetic core of the second magnetic pulse compression unit MS2 reaches reverse saturation first. Since the reverse impedance of MS2 is very small, MS2 is equivalent to a diode that is reverse-conducting and forward-cut off. The tenth high-voltage capacitor C10, the second stage coil and the ninth high-voltage capacitor C9 form a CLC resonance. The energy of the tenth high-voltage capacitor C10 is quickly transferred to the ninth high-voltage capacitor C9.

[0093] As time goes on, the high voltage of the ninth high voltage capacitor C9 causes the magnetic core of the first magnetic pulse compression unit MS1 to reach reverse saturation. At this time, MS1 is also equivalent to a diode that is reverse-conducting and forward-cut off. The ninth high voltage capacitor C9, the first primary coil and the eighth high voltage capacitor C8 form a CLC resonance, and the energy of the ninth high voltage capacitor C9 is quickly transferred to the eighth high voltage capacitor C8.

[0094] Furthermore, the energy on the eighth high-voltage capacitor C8 is rapidly discharged through the second electrode R2.

[0095] Because in the reverse saturation state of the second magnetic pulse compression circuit, as the charging time of the tenth high-voltage capacitor C10 increases, the core of the second magnetic pulse compression unit MS2 reaches reverse saturation first. At this time, the second stage coil of the second magnetic pulse compression circuit desaturates the second primary coil of the first magnetic pulse compression circuit. Then, as the high voltage of the ninth high-voltage capacitor C9 increases over time, causing the core of the first magnetic pulse compression unit MS1 to reach reverse saturation, the first stage coil of the second magnetic pulse compression circuit desaturates the first primary coil of the first magnetic pulse compression circuit. That is, the two magnetic pulse compression circuits achieve mutual desaturation while compressing the pulse. Therefore, this invention utilizes the saturation and desaturation characteristics of bidirectional pulse compression to eliminate the core desaturation circuit, thereby increasing the pulse compression efficiency of the magnetic switch.

[0096] Since the magnetic pulse compression unit applies positive and reverse voltages respectively to perform pulse compression and achieve automatic desaturation, the second embodiment of the present invention makes full use of the saturation and desaturation characteristics of the magnetic switch, and the magnetic core reset circuit can be omitted.

[0097] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to a specific order or hierarchy.

[0098] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features of the single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the invention.

[0099] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0100] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0101] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic pulse compression method, characterized in that, include: A positive voltage is applied to a magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression and generate a first compression pulse; A reverse voltage is applied to the magnetic pulse compression unit to cause the magnetic pulse compression unit to perform pulse compression and generate a second compression pulse; A positive voltage and a reverse voltage are alternately applied to the magnetic pulse compression unit so that the magnetic pulse compression unit desaturates while performing pulse compression; Applying a voltage to the magnetic pulse compression unit includes: A voltage is applied to a single-stage magnetic pulse compression unit or at least two-stage magnetic pulse compression units, wherein each stage of the magnetic pulse compression unit is composed of a primary coil and a secondary coil inducted together, and the primary coil and the secondary coil are located in the circuits where a forward voltage is applied and a reverse voltage is applied, respectively.

2. The magnetic pulse compression method according to claim 1, characterized in that, A positive voltage is applied to the primary coil of the magnetic pulse compression unit to generate a first compression pulse; A reverse voltage is applied to the secondary coil of the magnetic pulse compression unit to desaturate the primary coil and generate a second compression pulse.

3. The magnetic pulse compression method according to claim 1, characterized in that, A reverse voltage is applied to the secondary coil of the magnetic pulse compression unit to generate a second compression pulse; A positive voltage is applied to the primary coil of the magnetic pulse compression unit to desaturate the secondary coil and generate a first compression pulse.

4. The magnetic pulse compression method according to claim 1, characterized in that, The at least two-stage magnetic pulse compression units are cascaded in opposite sequences in the forward and reverse directions.

5. The magnetic pulse compression method according to claim 4, characterized in that, A positive voltage is applied to at least two stages of magnetic pulse compression units, wherein the compression pulse generated by the previous stage magnetic pulse compression unit is transmitted to the next stage magnetic pulse compression unit so that the last stage magnetic pulse compression unit generates the first compression pulse.

6. The magnetic pulse compression method according to claim 4, characterized in that, A reverse voltage is applied to at least two stages of magnetic pulse compression units, wherein the compression pulse generated by the previous stage magnetic pulse compression unit is transmitted to the next stage magnetic pulse compression unit so that the last stage magnetic pulse compression unit generates a second compression pulse.

7. The magnetic pulse compression method according to claim 1, characterized in that, A control unit is used to alternately apply positive and reverse voltages to the magnetic pulse compression unit.

8. The magnetic pulse compression method according to any one of claims 1-7, characterized in that, Applying voltage to the magnetic pulse compression unit includes: A voltage is applied to the magnetic pulse compression unit through a stage capacitor, the electrical energy of which is provided by a transformer; When applying voltage to at least two stages of magnetic pulse compression units, the stage capacitor has at least two stages. By transferring the electrical energy of the previous stage capacitor to the next stage capacitor, the last stage capacitor applies voltage to the last stage magnetic pulse compression unit.

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