Inductive energy storage type pulse power supply with magnetic coupling energy injection mechanism and working method

Abstract

The application discloses an inductance energy storage type pulse power supply with a magnetic coupling energy injection mechanism and a working method, relates to the technical field of pulse power, and introduces a mutual inductance coupling energy injection mechanism of multiple primary sides and single secondary side, so that the changes of the inductance currents of all stages in the parallel discharge stage generate the same direction superimposed induction voltage and current on the common secondary side coil of the load side; the induction energy is injected into the load side through the magnetic coupling energy injection circuit, the voltage superposition of the load end can be realized by adopting the series energy injection of the secondary side, the current superposition can be realized by adopting the parallel energy injection of the secondary side rectification, and the energy injection window is limited through a load gate device to avoid the false energy injection in the charging stage. The application improves the rising edge, peak current and energy utilization rate of the output pulse, reduces the switching stress and loop oscillation risk under the premise of not increasing the stage number or improving the withstand voltage of the main switch, and is suitable for electromagnetic emission, strong pulse magnetic field and pulse power experimental system.

Description

Technical Field

[0001] This invention relates to the field of pulse power technology, specifically to an inductive energy storage pulse power supply with a magnetic coupling energy injection mechanism and its operating method. Background Technology

[0002] Inductive energy storage pulse power supplies are widely used in electromagnetic emission, strong pulsed magnetic fields, and pulsed power experiments due to their high power density and ability to achieve high current output. XRAM (dual topology of Marxist circuits) inductive energy storage circuits achieve high output current multiplication capability without significantly increasing the withstand voltage of single-stage devices through series charging and parallel discharging. At the same time, combining with ICCOS (semiconductor reverse commutation) modules can improve the switching process, achieve controllable commutation, and reduce switching stress. However, existing XRAM inductive energy storage circuits typically rely solely on the superposition of parallel discharge current in the main circuit to power the load. The load-side voltage drive capability and current rise rate di / dt are limited by the output equivalent inductance and circuit distribution parameters, where i represents current and t represents time. Increasing the number of stages or raising the power supply voltage to improve the output will significantly increase the stress on the switching devices, system size and cost, and introduce a stronger risk of overvoltage. Furthermore, without altering the main circuit stage number and device withstand voltage, introducing an additional energy injection channel to superimpose the injection current and the main discharge current in the same direction can improve the effective driving capability and di / dt during the critical rising edge phase, while also enhancing the energy transfer efficiency from the stored energy storage to the load side. Therefore, there is an urgent need for an inductor-based pulse power supply topology that, while maintaining the advantages of XRAM series charging / parallel discharging and ICCOS controllable commutation, introduces an additional magnetically coupled energy injection channel in addition to the main energy channel for switch-reconfigured parallel discharge output. This would allow the main circuit current multiplication and secondary-side inductive energy injection to work synergistically, further improving the load-side driving capability and energy utilization. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an inductor-based pulse power supply with a magnetic coupling energy injection mechanism and its operating method. The parallel discharge main channel, achieved through XRAM switch reconfiguration, outputs the energy stored in each stage of the inductors to the load in a current-multiplying manner. Simultaneously, through the mutual inductance coupling of the energy stored in each stage of the inductors with the common secondary coil on the load side, a induced energy is generated in the same direction and superimposed during the parallel discharge phase, and injected into the load side. This achieves dual-channel coordinated power supply of parallel discharge and magnetic coupling energy injection, thereby improving the output current rise rate, peak current, and energy utilization rate, while reducing switching stress.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An inductive energy storage pulse power supply with a magnetic coupling energy injection mechanism includes:

[0006] DC power supply;

[0007] n-stage inductor energy storage units form an XRAM topology. Each stage of the inductor energy storage unit is equivalent to being connected in series during the charging phase and equivalent to being connected in parallel during the discharging phase. Each stage of the inductor energy storage unit includes an energy storage inductor, a controllable switch, and a unidirectional conducting device, which are used to form a series-parallel reconfiguration structure. XRAM is the dual topology of the Marxist circuit.

[0008] The ICCOS commutation branch is located in each stage of the inductor energy storage unit and is used to provide reverse commutation current and voltage to the controllable switch during the reconstruction process of switching from series charging to parallel discharging; ICCOS stands for semiconductor reverse commutation.

[0009] The load branch includes a common secondary coil, a magnetically coupled energy injection circuit, and a gating device. The common secondary coil is mutually coupled with each stage of energy storage inductor and configured in the same polarity so that the current changes of each stage of inductor during the parallel discharge stage generate a superimposed induced voltage in the common secondary coil. The magnetically coupled energy injection circuit is electrically connected to the common secondary coil and is configured to couple the induced energy to the load side during the parallel discharge stage. The gating device is configured to turn on the load circuit when the charging current reaches a predetermined value and trigger each stage of the ICCOS commutation branch to enter the commutation turn-off process.

[0010] The control unit is used to control the on / off timing of controllable switches and gate devices at all levels.

[0011] Furthermore, the parallel discharge of the n-stage inductor energy storage units constitutes the main energy channel of the XRAM; the common secondary coil and the magnetically coupled energy injection circuit constitute the mutually inductively coupled secondary energy injection channel. The two are configured to simultaneously supply energy to the load side during the parallel discharge stage, so that the current multiplication output of the main channel and the induced energy injection of the secondary channel are superimposed in the same discharge stage.

[0012] Furthermore, the magnetically coupled energy injection circuit includes a diode rectifier bridge, with the port of the common secondary coil connected to the diode rectifier bridge, the rectified output terminal connected in parallel to the output bus or load terminal, a current-limiting inductor connected in series to the rectified output terminal, and a buffer capacitor connected in parallel between the injection node and the output bus or load terminal to suppress oscillations and voltage spikes in the rectifier circuit.

[0013] Furthermore, the magnetically coupled energy injection circuit connects the common secondary coil in series with the load circuit and is gated by a gating device, so that the induced voltage is superimposed in series at the load end.

[0014] Furthermore, the magnetically coupled energy injection circuit is a reconfigurable network that can switch between secondary-side rectified parallel energy injection mode and secondary-side series energy injection mode during the same discharge process, or enable both operating modes in parallel.

[0015] Furthermore, the gated device is turned on by the control unit after a delay after triggering and completing the commutation to open the energy coupling window, and is turned off when the load current reaches a threshold to limit reverse flow on the secondary side.

[0016] Furthermore, the ICCOS commutation branch is further used to absorb leakage inductance energy and clamp overvoltages across the controllable switch.

[0017] Furthermore, the control unit is configured to enable the XRAM parallel discharge main energy channel and the mutually inductively coupled secondary energy injection channel to supply energy collaboratively in the same parallel discharge phase, and to adjust the energy injection window of the gating device according to the changes in the load current rise rate, the output bus voltage and the load terminal voltage, so that the secondary energy injection channel enhances energy injection in the pulse rising edge phase, thereby improving the energy transfer efficiency to the load and the pulse rising edge performance, and enhancing the adaptability to changes in load parameters.

[0018] This invention also provides a method for operating an inductor-type pulse power supply with a magnetic coupling energy injection mechanism, comprising the following steps:

[0019] The n-stage inductor energy storage unit is connected in series with a DC power supply to store energy.

[0020] Trigger the ICCOS commutation branch to apply reverse commutation to the corresponding controllable switch to complete the serial-to-parallel reconfiguration;

[0021] The n-stage energy storage inductors of the n-stage inductor energy storage unit are connected in parallel to discharge to the output bus, forming a superposition of currents.

[0022] During parallel discharge, the mutual inductive coupling between the energy storage inductors at each stage and the common secondary coil generates induced energy superimposed in the same direction on the common secondary coil. This energy is then coupled to the load side through a magnetic coupling energy injection circuit in the form of secondary-side series energy injection and / or secondary-side rectified parallel energy injection. The current multiplication output generated by the parallel discharge constitutes the main energy channel, while the induced energy generated by the mutual inductive coupling constitutes the secondary energy injection channel. The main energy channel and the secondary energy injection channel are superimposed to supply energy to the load side during the same parallel discharge stage.

[0023] Furthermore, during series charging, the gating device is kept off or kept in a unidirectional isolation state to isolate the secondary-side energy injection channel from the load.

[0024] Furthermore, during parallel energy injection in the secondary side rectification, reverse oscillations and voltage spikes caused by rectification conduction are suppressed by current limiting and buffer branches.

[0025] Beneficial effects:

[0026] 1. This invention improves the equivalent driving capability of the load end through the magnetically coupled secondary side energy injection channel without increasing the number of stages or increasing the withstand voltage of the main switch, thereby improving the output current rise rate di / dt and peak current.

[0027] 2. The parallel energy injection channel on the secondary side of the present invention, which is mainly based on diode rectification, has high reliability, reduces control complexity, and improves fault resistance.

[0028] 3. This invention limits the energy injection window by using an energy injection gating device, which can avoid accidental energy injection and backflow during the charging stage and reduce the risk of system energy backflow.

[0029] 4. The two methods of secondary-side series power injection and secondary-side rectified parallel power injection of the present invention can cover different load types and waveform requirements, and waveform shaping can be achieved through reconfigurable magnetic coupling power injection circuit, thereby improving system adaptability.

[0030] 5. This invention provides energy through the main energy channel of XRAM parallel discharge and the secondary energy injection channel of multi-primary-side single-secondary-side mutual inductance coupling, so that the current multiplication output and induced energy injection play a superposition role in the same discharge stage. Without increasing the number of stages or increasing the withstand voltage of single-stage devices, it improves the energy transfer efficiency and pulse rise time performance, and enhances the adaptability to load parameter changes. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the circuit topology of the inductive energy storage pulse power supply with magnetic coupling energy injection mechanism of the present invention.

[0032] Figure 2(a) shows the parallel rectifier charging method on the secondary side of the magnetically coupled charging circuit;

[0033] Figure 2(b) shows the secondary-side series energy injection method of the magnetically coupled energy injection circuit;

[0034] Figure 3 This is a schematic diagram of the working timing of the inductive energy storage pulse power supply with magnetic coupling energy injection mechanism of the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figure 1 As shown, the inductor-type pulse power supply with magnetic coupling energy injection mechanism in this embodiment includes a DC power supply U. sThe system comprises an n-stage inductor energy storage unit, an output bus, a load branch, and a control unit. The n-stage inductor energy storage unit forms an XRAM topology, with each stage of the inductor energy storage unit being equivalently connected in series during the charging phase and equivalently connected in parallel during the discharging phase; that is, each stage of the inductor energy storage unit includes an energy storage inductor L. i Controllable switch Th i and unidirectional conduction device D i It is used to construct the series-parallel reconfiguration structure for XRAM series charging / parallel discharging.

[0037] Each stage of the inductor energy storage unit is equipped with an ICCOS commutation branch for reverse commutation shutdown of the switch; that is, each stage also has an ICCOS commutation branch, including the commutation capacitor C. i With unidirectional conduction device D i,1 ~D i,3 Used to control Th during the reconfiguration process of switching from series charging to parallel discharging. i It provides reverse commutation current / voltage to achieve controllable turn-off and reduce overvoltage stress. Here, i represents the number of stages in the inductor energy storage unit.

[0038] DC power supply U s To provide charging energy to the system, its positive terminal is connected to the output bus through the main circuit of each stage of inductor energy storage unit, while the negative terminal serves as the circuit reference terminal. Each stage of inductor energy storage unit is arranged in parallel along the output bus, with each stage's energy storage inductor L... i With controllable switch Th i and unidirectional conduction device D i Forming the XRAM switching branch:

[0039] During the series charging phase, the control unit drives the switches at each stage to be in the charging operating state, enabling the energy storage inductors L at each stage to... i Equivalent series connection of DC power supply U s This forms a charging current path, thereby storing energy in each stage of the inductor;

[0040] During the parallel discharge phase, the controllable switches Th at each stage are controlled through the ICCOS commutator branch. i Reverse commutation is implemented, which turns off the commutation according to a predetermined process and completes the series-parallel reconfiguration. This allows the inductors of each stage to be connected in parallel to the output bus to discharge to the load side, thereby forming a superimposed current output on the output bus.

[0041] Each level of ICCOS converter branch has a converter capacitor C. i and unidirectional conduction device D i,1 ~D i,3 It is a component that is connected to the main circuit of this stage. During the reconfiguration commutation process, the commutation capacitor C... i A controllable switch Th is formed via a unidirectional conducting device. iThe reverse commutation path provides reverse current and reverse voltage to the switch for controlled turn-off and suppresses overvoltage across the switch, thereby reducing switch stress and the risk of circuit ringing. The output bus is connected to the load branch, and the load branch and the output bus are connected via a trigger-gated device Th. n+1 It enables discharge access and trigger control, allowing the system to enter the commutation and reconfiguration and parallel discharge process after completing series charging.

[0042] The load branch includes the load and the gated device Th. n+1 Common secondary coil L s And a magnetically coupled energy injection circuit. Among them, the common secondary coil L... s For secondary inductors located on the load side, and for each stage of energy storage inductors L i Mutual inductance coupling is formed; the mutual inductance couplings at each stage are configured with the same polarity at the same terminals, so that the current changes of each stage of the inductor during the parallel discharge stage are reflected in the common secondary coil L. s An induced voltage is generated in the same direction and superimposed. The magnetically coupled energy injection circuit and the common secondary coil L s The circuit is electrically connected and configured to couple induced energy to the load side during the parallel discharge phase. The magnetically coupled energy injection circuit can achieve both series energy injection on the secondary side and parallel rectified energy injection on the secondary side, and is controlled by the energy injection gating device Th. n+2 Limit the energy injection window to avoid accidental energy injection during the charging phase and reverse backfeed during the discharging phase.

[0043] The gate control device Th n+1 It is configured to connect the load circuit when the charging current reaches a predetermined value, and act as an ICCOS commutation trigger switch to enable each stage of the ICCOS commutation branch to enter the commutation turn-off process, thereby completing the switch from series charging state to parallel discharging state.

[0044] The magnetically coupled energy injection circuit has at least one of the following operating modes:

[0045] Figure 2(a) shows the operating mode (a). The magnetic coupling power injection circuit mainly uses diode rectification (forming a diode rectification circuit), which includes: a common secondary coil L. s Diode rectifier bridges Dr1-Dr4, injection nodes, and optional current-limiting buffer branches and injection gating devices Th n+2 The specific connection relationship is as follows: common secondary coil L s The two ends of the diode are connected as AC input terminals to the AC terminals of the diode rectifier bridge Dr1 to Dr4; the DC output terminals of the rectifier bridge form an injection node and are connected to the output bus or load terminal, thereby forming an injection current I. e During the parallel discharge phase, the common secondary coil L s The induced energy on the circuit is converted into an injected current I after being unidirectionally rectified by the rectifier bridge. eThe parallel discharge current of the main circuit drives the load together; in order to suppress the oscillation caused by the rectifier conduction, a current-limiting inductor can be connected in series between the rectifier output terminal and the injection node, and a buffer capacitor and absorption branch can be connected in parallel between the injection node and the output bus or the load terminal to suppress the rectifier circuit oscillation and voltage spikes.

[0046] The diode rectifier bridges Dr1 to Dr4 are configured to connect the common secondary coil L s The unidirectional induction output ensures that the injection current only conducts and is injected into the output bus or load when the polarity of the induced voltage is consistent with the injection direction. When the induced voltage is reversed or lower than the bus potential, it is cut off to block reverse backflow, thereby avoiding the cancellation of the injection current and the main discharge current and improving the effective injection efficiency.

[0047] Figure 2(b) shows the operating mode (b). The magnetically coupled power injection circuit includes a common secondary coil L. s With the energy-gated device Th n+2 The specific connection relationship is as follows: common secondary coil L s Or its equivalent port and the power gate device Th n+2 After being connected in series, the entire circuit is connected in series with the load circuit, making the common secondary coil L s The induced voltage on the energy-gated device Th n+2 Within the conduction window, the output of the main circuit is superimposed in series at the load end, thereby increasing the instantaneous equivalent drive voltage at the load end and improving the current rise rate di / dt; by controlling the energy injection gating device Th n+2 The timing and duration of the on-time can limit the series injection window to the rising edge of the pulse to obtain a higher di / dt.

[0048] Preferably, the magnetically coupled energy injection circuit is a reconfigurable network that can switch between operating mode (a) and operating mode (b) during the same discharge process, or enable both operating modes in parallel to achieve the target pulse waveform shaping.

[0049] Preferably, the energy-gated device Th n+2 The control unit triggers the gating device Th n+1 After ICCOS commutation is completed, a delay Δt is applied to open the energy coupling window, and the window is turned off when the load current reaches a threshold to limit reverse flow on the secondary side.

[0050] Preferably, the winding turns ratio and leakage inductance configuration are used to ensure that the secondary side energy injection mainly occurs during the parallel discharge stage.

[0051] Preferably, the ICCOS commutator branch is further used to absorb leakage inductance energy and control the Th controllable switch. i Overvoltage at both ends is clamped to reduce switching stress.

[0052] Preferably, the control unit adjusts the ICCOS commutation timing and the energy injection gating device Th based on feedback parameters such as the load current rise rate di / dt, the output bus voltage, or the switching voltage stress. n+2 The start time and duration.

[0053] Specifically, the working process of the inductor energy storage pulse power supply with magnetic coupling energy injection mechanism in this embodiment can be divided into three stages, and both working mode (a) (secondary side rectification and parallel energy injection, corresponding to Figure 2(a)) and working mode (b) (secondary side series energy injection, corresponding to Figure 2(b)) can be selected or combined as needed within the parallel discharge and secondary side energy injection stages:

[0054] (1) Series charging stage: Control the inductor energy storage units at each stage to be in the equivalent topology of series charging, so that the energy storage inductors L1…L n Equivalent series connection of DC power supply U s The charging current increases and energy is stored in the energy storage inductors at each stage; at the same time, the energy injection gating device Th is maintained. n+2 Turn off or maintain unidirectional isolation to isolate the secondary side energy injection channel from the load and avoid accidental energy injection during the charging phase;

[0055] (2) ICCOS commutation stage: Trigger the ICCOS commutation branch to enable each level of controllable switch Th i Obtaining reverse commutation current and realizing commutation shutdown, thereby completing the switch from series charging state to parallel discharging state;

[0056] (3) Parallel discharge and secondary side energy injection stage: The energy storage inductors of each stage are equivalently connected in parallel to discharge to the output bus, forming current superposition. At the same time, the energy storage inductors of each stage L i di i / dt(i i L represents the energy storage of the i-th stage inductor. i The current in the common secondary coil L s Upper induced voltage The control unit activates the energy-gated device Th. n+2 The energy injection window is opened, allowing the induced energy to be coupled to the load side via the magnetic coupling energy injection circuit, thereby improving the load-side driving capability and the pulse rise edge.

[0057] During the parallel discharge phase, the common secondary coil L s The induced voltage on the surface satisfies:

[0058] (1)

[0059] in, For the i-th stage energy storage inductor L i With common secondary coil L sThe mutual inductance between them is superimposed in the same direction by configuring the same-name terminals in the same direction, where n represents the total number of energy storage inductors.

[0060] Therefore, the operating method of an inductor-type pulse power supply with a magnetic coupling energy injection mechanism according to the present invention includes:

[0061] Step 1, Series Charging: Connect the n-stage inductor energy storage unit in series with the DC power supply U. s For energy storage;

[0062] Step 2, Reconfigure the commutation: Trigger the ICCOS commutation branch to the corresponding controllable switch Th i Apply reverse commutation to complete the serial-to-parallel reconstruction;

[0063] Step 3, Parallel Discharge: Connect the n-stage energy storage inductors in parallel to discharge to the output bus, forming a current superposition.

[0064] During step 3, energy storage inductors L at each level are utilized. i With common secondary coil L s Mutual inductance coupling between them occurs in the common secondary coil L s The induced energy generated in the same direction is coupled to the load side through a magnetic coupling energy injection circuit in the form of secondary side series energy injection and / or secondary side rectified parallel energy injection.

[0065] Preferably, during step 1, the energy-gated device Th is maintained. n+2 By shutting off or maintaining a unidirectional isolation state, the secondary side energy injection channel is isolated from the load to avoid accidental energy injection and recharge during the charging phase.

[0066] Preferably, in step 3, when the secondary side is rectified and charged in parallel, the diode rectifier circuit suppresses the reverse oscillation and voltage spikes caused by the rectifier conduction through current limiting and buffer branches.

[0067] like Figure 3 As shown, this is the load branch triggered gating device Th. n+1 With the energy-gated device Th n+2 The control timing diagram. Figure 3 The horizontal axis represents time t, and the upper and lower waveforms correspond to the gated device's energy injection gate Th, respectively. n+1 With Th n+2 The control signals. The operation process is divided into a series charging stage, an ICCOS reconfiguration and commutation stage, and a parallel discharging stage.

[0068] During the series charging phase, the gated device Th n+1 With the energy-gated device Th n+2All circuits remain off, and the load circuit and secondary-side power injection channel are isolated from the charging circuit to prevent accidental power injection and energy backflow during the charging phase. Upon entering the reconfiguration commutation phase, the control unit triggers the gating device Th. n+1 A conduction pulse is generated to connect the load branch and act as an ICCOS commutation trigger switch, guiding each stage of the ICCOS commutation branch into the reverse commutation turn-off process, thereby completing the series-parallel reconstruction from the series charging equivalent topology to the parallel discharging equivalent topology. Subsequently, the parallel discharge stage begins, where the n-stage energy storage inductors discharge to the output bus in equivalent parallel, forming a current superposition. The control unit delays the start of the parallel discharge. Re-triggered energy gate device Th n+2 Conduction is initiated to open the secondary side energy injection window. This indicates the delay interval from the end of commutation reconfiguration to the access of the secondary-side energy injection channel, used to avoid reverse backflow or device stress increase caused by the superposition of commutation transients and secondary-side energy injection coupling.

[0069] Therefore, while maintaining the advantages of XRAM series charging and discharging and ICCOS controllable commutation, this invention introduces a multi-primary-side single-secondary-side mutually inductively coupled energy injection channel to achieve parallel energy injection and series energy injection on the secondary side. This improves the output pulse performance without increasing the number of stages or raising the main switch withstand voltage. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An inductive energy storage pulse power supply with a magnetic coupling energy injection mechanism, characterized in that, include: DC power supply; n-stage inductor energy storage units form an XRAM topology. Each stage of the inductor energy storage unit is equivalent to being connected in series during the charging phase and equivalent to being connected in parallel during the discharging phase. Each stage of the inductor energy storage unit includes an energy storage inductor, a controllable switch, and a unidirectional conducting device, which are used to form a series-parallel reconfiguration structure. XRAM is the dual topology of the Marxist circuit. The ICCOS commutation branch is located in each stage of the inductor energy storage unit and is used to provide reverse commutation current and voltage to the controllable switch during the reconstruction process of switching from series charging to parallel discharging; ICCOS stands for semiconductor reverse commutation. The load branch includes a common secondary coil, a magnetically coupled energy injection circuit, and a gating device. The common secondary coil is mutually coupled with each stage of energy storage inductor and configured in the same polarity so that the current changes of each stage of inductor during the parallel discharge stage generate a superimposed induced voltage in the common secondary coil. The magnetically coupled energy injection circuit is electrically connected to the common secondary coil and is configured to couple the induced energy to the load side during the parallel discharge stage. The gating device is configured to turn on the load circuit when the charging current reaches a predetermined value and trigger each stage of the ICCOS commutation branch to enter the commutation turn-off process. The control unit is used to control the on / off timing of controllable switches and gate devices at all levels.

2. The inductive energy storage pulse power supply with magnetic coupling energy injection mechanism according to claim 1, characterized in that, The magnetically coupled energy injection circuit includes a diode rectifier bridge. The port of the common secondary coil is connected to the diode rectifier bridge. The rectified output terminal of the diode rectifier bridge is connected in parallel to the output bus or the load terminal. A current-limiting inductor is connected in series to the rectified output terminal of the diode rectifier bridge. A buffer capacitor is connected in parallel between the injection node and the output bus or the load terminal.

3. The inductive energy storage pulse power supply with magnetic coupling energy injection mechanism according to claim 1, characterized in that, The magnetically coupled energy injection circuit connects the common secondary coil in series with the load circuit and is gated by a gating device, so that the induced voltage is superimposed in series at the load end.

4. An inductive energy storage pulse power supply with a magnetic coupling energy injection mechanism according to any one of claims 1 to 3, characterized in that, The magnetically coupled power injection circuit is a reconfigurable network that can switch between secondary-side rectified parallel power injection mode and secondary-side series power injection mode during the same discharge process, or enable both secondary-side rectified parallel power injection mode and secondary-side series power injection mode in parallel.

5. The inductive energy storage pulse power supply with magnetic coupling energy injection mechanism according to claim 1, characterized in that, The gated device is turned on by the control unit after a delay after triggering and completing the commutation to open the energy coupling window, and turned off when the load current reaches a threshold to limit reverse flow on the secondary side.

6. The inductive energy storage pulse power supply with magnetic coupling energy injection mechanism according to claim 1, characterized in that, The ICCOS commutation branch includes commutation capacitors and unidirectional conduction devices to absorb leakage inductance energy and clamp overvoltages across the controllable switch.

7. The inductive energy storage pulse power supply with magnetic coupling energy injection mechanism according to claim 1, characterized in that, The control unit is configured to adjust the injection window of the gating device according to changes in the load current rise rate, the output bus voltage, and the load terminal voltage.

8. A method for operating an inductive energy storage pulse power supply with a magnetic coupling energy injection mechanism as described in any one of claims 1 to 7, characterized in that, Includes the following steps: The n-stage inductor energy storage unit is connected in series with a DC power supply to store energy. Trigger the ICCOS commutation branch to apply reverse commutation to the corresponding controllable switch to complete the serial-to-parallel reconfiguration; The n-stage energy storage inductors of the n-stage inductor energy storage unit are connected in parallel to discharge to the output bus, forming a superposition of currents. During parallel discharge, the mutual inductive coupling between the energy storage inductors at each stage and the common secondary coil generates induced energy superimposed in the same direction on the common secondary coil. This energy is then coupled to the load side through a magnetic coupling energy injection circuit in the form of secondary-side series energy injection and / or secondary-side rectified parallel energy injection. The current multiplication output generated by the parallel discharge constitutes the main energy channel, while the induced energy generated by the mutual inductive coupling constitutes the secondary energy injection channel. The main energy channel and the secondary energy injection channel are superimposed to supply energy to the load side during the same parallel discharge stage.

9. The working method according to claim 8, characterized in that, During series charging, the gating device is kept off or kept in a unidirectional isolation state to isolate the secondary-side energy injection channel from the load.

10. The working method according to claim 8, characterized in that, When the secondary side is rectified and charged in parallel, the reverse oscillation and voltage spikes caused by the rectifier conduction are suppressed by current limiting and buffer branches.

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