CN113179005B - Double-pulse power supply and working method thereof - Google Patents
Double-pulse power supply and working method thereof Download PDFInfo
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- CN113179005B CN113179005B CN202110574462.4A CN202110574462A CN113179005B CN 113179005 B CN113179005 B CN 113179005B CN 202110574462 A CN202110574462 A CN 202110574462A CN 113179005 B CN113179005 B CN 113179005B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention belongs to the technical field of double-pulse power supplies, and relates to a double-pulse power supply and a working method thereof, wherein the double-pulse power supply comprises two paths of low-voltage loops, a time sequence control unit, a pulse transformer, a secondary high-voltage capacitor and a magnetic compression network; the pulse transformer comprises a primary winding and a secondary winding; the two paths of low-voltage loops comprise a direct-current power supply module, a charging resistor, a primary energy storage capacitor, a main switch and a freewheeling diode, wherein the two main switches adopt controllable semiconductor switches; the two paths of freewheeling diodes are connected with the primary winding; the secondary winding is connected in series with the high-voltage end of the secondary high-voltage capacitor through a rectifier diode; the output end of the time sequence control unit is respectively connected with the two paths of main switches; the magnetic compression network is connected in parallel to two sides of the secondary high-voltage capacitor through the charging inductor. The invention solves the problems of high circuit working voltage, low time sequence control precision and difficult adjustment of output pulse parameters in the existing double-pulse power supply technical route.
Description
Technical Field
The invention belongs to the technical field of double-pulse power supplies, and relates to a double-pulse power supply and a working method thereof.
Background
The double pulse method is an experimental method for testing dynamic insulation recovery characteristics of a medium or working performances of important components (switches, insulations and the like) and load applications (laser cavities, microwave sources, ion beams and the like) in a repetition frequency pulse power supply system. The working principle is that two high-voltage pulses with the same waveform parameters and flexible and adjustable time interval are applied to a tested object, the first pulse is used for guiding a medium to generate discharge, and the breakdown and insulation recovery characteristics of the medium are represented by checking the discharge parameters of the second pulse. The double pulse method has the working characteristic of 'pseudo repetition frequency', and is very suitable for exploring the detailed characteristics of dielectric breakdown and insulation recovery under the working condition of repetition frequency.
The technical route commonly used by the existing double-pulse power supply is as follows: firstly, the two independent energy storage devices (high-voltage capacitor and transmission line) are slowly charged through a high-voltage direct-current power supply, and after the voltage of the energy storage devices reaches a preset value, a high-voltage gas switch is triggered to be conducted according to a specific time sequence, so that two continuous high-voltage pulses are generated. This technical route has obvious drawbacks, including: (1) The requirements on the working voltage of the circuit and the insulation performance of the system elements are very high, and the complexity, the cost and the potential safety hazard of the system are increased; (2) The gas switch is used as a key switch device for triggering the generation of high-voltage pulse, so that the implementation difficulty and the operation cost of the system are further increased, and the accuracy of time sequence control of the system is obviously reduced; and (3) the output parameters of the system are difficult to adjust, and the flexibility is poor.
Disclosure of Invention
The invention aims to provide a double-pulse power supply and a working method thereof, which solve the problems of high circuit working voltage, low time sequence control precision and difficult adjustment of output pulse parameters in the existing double-pulse power supply technical route.
The invention is realized by the following technical scheme:
a double-pulse power supply comprises a first low-voltage loop, a second low-voltage loop, a time sequence control unit, a pulse transformer, a secondary high-voltage capacitor and a magnetic compression network; the pulse transformer comprises a primary winding and a secondary winding;
the first low-voltage loop comprises a first path of power supply module, a first path of charging resistor, a first path of primary energy storage capacitor, a first path of main switch and a first path of freewheeling diode;
the second low-voltage loop comprises a second power supply module, a second charging resistor, a second primary energy storage capacitor, a second main switch and a second freewheeling diode;
the first main switch and the second main switch adopt controllable semiconductor switches;
the first path of freewheeling diode and the second path of freewheeling diode are connected with the primary winding; the secondary winding is connected in series with the high-voltage end of the secondary high-voltage capacitor through a rectifier diode;
the output end of the time sequence control unit is respectively connected with the first path of main switch and the second path of main switch;
the magnetic compression network is connected in parallel to two sides of the secondary high-voltage capacitor through the charging inductor.
Further, the magnetic compression network comprises a plurality of magnetic compression units with orders, each magnetic compression unit comprises an energy storage capacitor, a magnetic switch and a charging capacitor, and the energy storage capacitors are connected with the charging capacitors through the magnetic switch;
the charge capacitor of the upper-order magnetic compression unit simultaneously serves as the energy storage capacitor of the lower-order magnetic compression unit.
Further, the inductance of the magnetic switch when it reaches the magnetic saturation state is smaller than the inductance value of the charging inductance.
Further, the first path of power supply module, the second path of power supply module and the pulse transformer are commonly connected with the ground.
Further, the chip of the time sequence control unit adopts an AVR singlechip.
Further, the pulse transformer adopts a Tesla transformer.
Further, the first path of energy storage capacitor and the primary winding form a primary resonant circuit, and the secondary winding and the secondary high-voltage capacitor form a secondary resonant circuit.
The invention also discloses a working method of the double-pulse power supply, which comprises the following steps:
s1, a first path of energy storage capacitor is charged to a preset voltage value by a first path of power supply module through a first path of charging resistor; the second path of energy storage capacitor is charged to a preset voltage value by the second path of power supply module through the second path of charging resistor;
s2, the time sequence control unit sends a trigger voltage signal to the first main switch to trigger the first main switch to be turned on;
s3, discharging the first energy storage capacitor to the primary winding through the first main switch, wherein the first energy storage capacitor and the primary winding form a primary resonant circuit;
when current flows through the primary winding, induced current is generated in the secondary winding, when the induced current flows through the secondary high-voltage capacitor, the secondary high-voltage capacitor is charged, high voltage is generated in the secondary high-voltage capacitor, and the secondary winding and the secondary high-voltage capacitor form a secondary resonance circuit;
the output voltage is rectified by a rectifier diode to obtain unipolar high-voltage pulses, and the rectified unipolar high-voltage pulses continue to charge the magnetic compression network through the charging inductor until the generation of the first high-voltage pulse is completed;
s4, after a preset time interval, the time sequence control unit sends a trigger voltage signal to the second main switch to trigger the second main switch to be turned on;
s5, discharging the second energy storage capacitor to the primary winding through the second main switch, wherein the second energy storage capacitor and the primary winding form a primary resonant circuit;
when current flows through the primary winding, induced current is generated in the secondary winding of the pulse transformer, when the induced current flows through the secondary high-voltage capacitor, the secondary high-voltage capacitor is charged, high voltage is generated in the secondary high-voltage capacitor, and the secondary resonant circuit is formed by the secondary winding of the pulse transformer and the secondary high-voltage capacitor;
the output voltage is rectified by a rectifier diode to obtain unipolar high-voltage pulses, and the rectified unipolar high-voltage pulses continue to charge the magnetic compression network through the charging inductor until the generation of the second high-voltage pulses is completed; a complete double pulse generation cycle ends.
S6, after waiting for a specific time, repeating the steps S1 to S5, and starting the next double pulse generation period.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a double-pulse power supply which comprises two mutually independent low-voltage loop units, a time sequence control unit, a pulse transformer and a magnetic compression network. The high-voltage and low-voltage parts of the power supply system are separated by using the pulse transformer with high transformation ratio, and the low-voltage unit has lower insulation requirement, so that the realization difficulty of the system is reduced, and the requirement of the power supply system on the primary working voltage is reduced; on the basis, a controllable semiconductor switch with higher switching speed and more accurate and stable time sequence control performance is used as a main switch in a low-voltage unit, so that the time sequence precision of continuous pulse voltage generation is greatly improved, the pulse interval of 1 microsecond minimum can be obtained, the accurate control of two continuous pulses can be realized, and the accurate adjustment of the time interval of output double pulses can be realized; by using a magnetic compression network with adjustable parameters and adjustable orders, the rising edge of the output pulse can be compressed to change from tens of microseconds to nanoseconds, so that the front edge of the output pulse can be flexibly adjusted.
Further, when the magnetic switch reaches a magnetic saturation state, the inductance is far smaller than the inductance value of the charging inductance, so that energy in the energy storage capacitor is rapidly charged into the charging capacitor through the saturation magnetic switch, and the voltage rising rate of the charging capacitor of each stage of magnetic compression unit is far faster than that of the charging capacitor, so that pulse compression is realized.
Furthermore, the pulse transformer adopts a Tesla transformer, and the typical Tesla transformer does not have an iron core, relies on magnetic field coupling between a primary winding and a secondary winding to transfer energy, and is suitable for use in a high-voltage pulse power supply because no iron core exists and the energy coupling is not limited by saturation and frequency of ferromagnetic materials. The Tesla transformer has the advantages of large secondary/primary winding turns ratio, high transformation ratio, small secondary turn-to-turn capacitance and simple structure. Particularly, the characteristic of high transformation ratio can reduce the requirement of a pulse power supply charging system on input voltage, which is beneficial to the use of semiconductor switching devices such as thyristors and the like on a low-voltage side loop, so that the generation of high-voltage pulses is accurately controlled in time sequence, and the realization of high repetition frequency output is easy to realize.
Drawings
FIG. 1 is a circuit topology of the present invention;
FIG. 2 is a circuit topology of a magnetic compression network with adjustable order;
FIG. 3 is a schematic diagram of the operation of the timing control signals of the double pulse circuit.
Wherein, 1 is a first path of power supply module; 2 is a second path of power supply module; 3 is a first path of charging resistor; 4 is a second path of charging resistor; 5 is a first path of energy storage capacitor; 6 is a second path of energy storage capacitor; 7 is a time sequence control unit; 8 is a first main switch; 9 is a second main switch; 10 is a first path of freewheeling diode; 11 is a second path freewheeling diode; 12 is a primary winding; 13 is a secondary winding; 14 is a secondary high voltage capacitor; 15 is a rectifier diode; 16 is a charging inductance; 17 is a magnetic compression network;
201 is a first order magnetic compression unit energy storage capacitor; 202 is a first order magnetic switch; 203 charges a capacitor for the first order magnetic compression unit; 204 charge a capacitor for the last magnetic compression unit.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
As shown in fig. 1, the present invention proposes a double pulse power supply based on a pulse transformer and a magnetic compression network, which is composed of two mutually independent low voltage loops, a timing control unit 7, the pulse transformer and the magnetic compression network 17. The two mutually independent low voltage loops comprise a first low voltage loop and a second low voltage loop, and the pulse transformer comprises a primary winding 12 and a secondary winding 13.
The first low-voltage loop comprises a first path of power supply module 1, a first path of charging resistor 3, a first path of primary energy storage capacitor, a first path of main switch 8 and a first path of freewheeling diode 10; the second low-voltage loop comprises a second power supply module 2, a second charging resistor 4, a second primary energy storage capacitor, a second main switch 9 and a second freewheeling diode 11; the first low voltage loop and the second low voltage loop are independent of each other but share the transformer primary winding 12.
The secondary winding 13 of the pulse transformer is connected in series with the high voltage end of the secondary high voltage capacitor 14 through a rectifier diode 15, and a magnetic compression network 17 is connected in parallel with the two sides of the secondary high voltage capacitor 14 through a charging inductance 16.
The first low voltage loop, the second low voltage loop, the primary winding 12 and the secondary winding 13 are commonly connected to ground.
The core of the time sequence control unit 7 is an AVR singlechip.
The pulse transformer adopts a Tesla transformer. The typical Tesla transformer is coreless and relies on magnetic field coupling between the primary and secondary windings 13 to transfer energy, which is not limited by saturation and frequency of ferromagnetic materials due to the absence of the core and is therefore suitable for use in high voltage pulsed power supplies. The Tesla transformer has the advantages of large turns ratio of the secondary winding 12 to the primary winding 12, high transformation ratio, small secondary turn-to-turn capacitance and simple structure. Particularly, the characteristic of high transformation ratio can reduce the requirement of a pulse power supply charging system on input voltage, which is beneficial to the use of semiconductor switching devices such as thyristors and the like on a low-voltage side loop, so that the generation of high-voltage pulses is accurately controlled in time sequence, and the realization of high repetition frequency output is easy to realize.
As shown in fig. 2, the magnetic compression network 17 includes a plurality of magnetic compression units of orders, each of which includes an energy storage capacitor, a magnetic switch, and a charging capacitor, the energy storage capacitor and the charging capacitor being connected through the magnetic switch; the charge capacitor of the upper-order magnetic compression unit simultaneously serves as the energy storage capacitor of the lower-order magnetic compression unit.
Specifically, the first-order magnetic compression unit includes a first-order magnetic compression unit storage capacitor 201, a first-order magnetic switch 202, and a first-order magnetic compression unit charging capacitor 203. The first-order magnetic compression unit energy storage capacitor 201 and the first-order magnetic compression unit charging capacitor 203 are connected through the first-order magnetic switch 202. The first order magnetic compression unit charges the capacitor 203 while acting as a storage capacitor for the second magnetic reduction unit. Only the first order magnetic compression unit is shown here. The order of the magnetic compression unit is determined according to actual needs in application. The last-order magnetic compression unit charges capacitor 204 as a power output. The secondary high voltage capacitor 14 is connected to the high voltage side of the first order magnetic compression unit storage capacitor 201 of the magnetic compression network 17 through the charging inductance 16.
As shown in fig. 3, the working flow of the double pulse power supply of the present invention specifically includes:
(1) The first path of energy storage capacitor 5 is charged to a preset voltage value by the first path of power supply module 1 through the first path of charging resistor 3;
the second path energy storage capacitor 6 is charged to a preset voltage value by the second path power module 2 through the second path charging resistor 4.
The above-mentioned charging process needs to be kept synchronous, ensuring that the voltages of the first path of energy storage capacitor 5 and the second path of energy storage capacitor 6 are the same after the charging process is finished.
(2) After the charging of the storage capacitor is completed, the timing control unit 7 triggers the first low voltage circuit and the second low voltage circuit to conduct according to a specific time sequence. The method specifically comprises the following steps:
2.1 referring to FIG. 3, in a double pulse generation period, the timing control unit 7 first sends a trigger voltage signal S1 to the first main switch 8, the trigger voltage pulse width is T 1 Amplitude is U 0 。
2.2, triggering the first main switch 8 to be conducted, discharging the first energy storage capacitor 5 to the primary winding 12 of the pulse transformer through the first main switch 8, and forming a primary resonant circuit by the first energy storage capacitor 5 and the primary winding 12.
2.3 when current flows through the primary winding 12 of the pulse transformer, due to the mutual inductance between the transformer windings, an induced current will be generated in the secondary winding 13 of the pulse transformer, and when the induced current flows through the secondary high voltage capacitor 14, the secondary high voltage capacitor 14 will be charged rapidly, so that a high voltage is generated in the secondary high voltage capacitor 14, and the secondary winding 13 of the pulse transformer and the secondary high voltage capacitor 14 form a secondary resonance circuit. Since the circuit is in resonance, the voltage of the secondary high voltage capacitor 14 will be a voltage of periodically varying polarity and amplitude.
The output voltage is rectified by the voltage fast recovery rectifying diode 15 to obtain a unipolar high-voltage pulse, the rectified unipolar high-voltage pulse can be continuously charged into the magnetic compression network 17 through the charging inductor 16 connected in series to the high-voltage end of the secondary high-voltage capacitor 14, and pulse leading edge compression is performed, so that a complete voltage pulse generation period is finished, and the generation of the first high-voltage pulse is completed.
2.4 referring to fig. 3, after a preset time interval T2 (i.e. the time interval between two consecutive pulses), the timing control unit 7 sends a trigger voltage signal S2 to the second main switch 9, the trigger voltage pulse width being T 1 Amplitude is U 0 。
2.5, the second energy storage capacitor 6 discharges to the primary winding 12 through the second main switch 9, and the second energy storage capacitor 6 and the primary winding 12 form a primary resonant circuit;
when current flows through the primary winding 12, induced current is generated in the pulse transformer secondary winding 13, when the induced current flows through the secondary high-voltage capacitor 14, the secondary high-voltage capacitor 14 is charged, high voltage is generated in the secondary high-voltage capacitor 14, and the pulse transformer secondary winding 13 and the secondary high-voltage capacitor 14 form a secondary resonance circuit;
the output voltage is rectified by the rectifying diode 15 to obtain unipolar high-voltage pulses, the rectified unipolar high-voltage pulses continue to charge the magnetic compression network 17 through the charging inductor 16 and perform pulse front compression, and therefore the generation of the second high-voltage pulses is completed; a complete double pulse generation cycle ends.
(3) After waiting for a specific time T3, the steps (1) to (2) are repeated to start the next double pulse generation cycle.
Preferably, in order to make the first-stage magnetic switch 202 in the off state during the charging of the first path storage capacitor 5, it is necessary to ensure that the unsaturated inductance of the first-stage magnetic switch 202 is far greater than the inductance value of the charging inductance 16, so that the pre-pulse on the first-stage magnetic compression unit charging capacitor 203 is small during the charging of the first-stage magnetic compression unit storage capacitor 201.
When the voltage on the energy storage capacitor 201 of the first-order magnetic compression unit rises, the voltage at two ends of the first-order magnetic switch 202 correspondingly increases, circuit element parameters are calculated according to output parameter requirements, it is ensured that when the voltage on the energy storage capacitor 201 of the first-order magnetic compression unit reaches the maximum value, the first-order magnetic switch 202 reaches a magnetic saturation state, and the inductance of the saturation state is far smaller than the inductance value of the charging inductance 16. The energy in the first-order magnetic compression unit storage capacitor 201 rapidly charges the first-order magnetic compression unit charging capacitor 203 through the saturated magnetic switch and the voltage rise rate on the first-order magnetic compression unit charging capacitor 203 is much faster than the voltage rise rate on the first-order magnetic compression unit storage capacitor 201. Thereby achieving compression of the pulses.
The invention can reduce the working voltage of the primary circuit by using the high-transformation ratio pulse transformer to obtain the output high-voltage pulse, and can realize the high-time precision control of the double-pulse power supply by using the controllable semiconductor switch to control the pulse generation time sequence in the primary circuit.
Claims (8)
1. The double-pulse power supply is characterized by comprising a first low-voltage loop, a second low-voltage loop, a time sequence control unit (7), a pulse transformer, a secondary high-voltage capacitor (14) and a magnetic compression network (17); the pulse transformer comprises a primary winding (12) and a secondary winding (13);
the first low-voltage loop comprises a first path of power supply module (1), a first path of charging resistor (3), a first path of primary energy storage capacitor (5), a first path of main switch (8) and a first path of freewheeling diode (10); the first path of power supply module (1), the first path of charging resistor (3) and the first path of primary energy storage capacitor (5) are connected in series, the anode of the first path of main switch (8) is connected with the anode of the first path of primary energy storage capacitor (5), the cathode of the first path of main switch (8) is connected with the primary winding (12) of the pulse transformer, and the first path of freewheeling diode (10) is reversely connected in parallel at two ends of the first path of main switch (8);
the second low-voltage loop comprises a second power supply module (2), a second charging resistor (4), a second primary energy storage capacitor (6), a second main switch (9) and a second freewheeling diode (11); the second path of power supply module (2), the second path of charging resistor (4) and the second path of primary energy storage capacitor (6) are connected in series, the anode of the second path of main switch (9) is connected with the anode of the second path of primary energy storage capacitor (6), the cathode of the second path of main switch (9) is connected with the primary winding (12) of the pulse transformer, and the second path of freewheeling diode (11) is reversely connected at two ends of the second path of main switch (9) in parallel;
the primary winding (12) and the secondary winding (13) of the pulse transformer are commonly connected with ground;
the first main switch (8) and the second main switch (9) adopt controllable semiconductor switches;
the first path of freewheel diode (10) and the second path of freewheel diode (11) are connected with the primary winding (12); the secondary winding (13) is connected in series with the high-voltage end of the secondary high-voltage capacitor (14) through a rectifier diode (15);
the output end of the time sequence control unit (7) is respectively connected with the first path of main switch (8) and the second path of main switch (9);
the magnetic compression network (17) is connected in parallel with the two sides of the secondary high-voltage capacitor (14) through the charging inductor (16).
2. A double pulse power supply according to claim 1, characterized in that the magnetic compression network (17) comprises several orders of magnetic compression units, each magnetic compression unit comprising a storage capacitor, a magnetic switch and a charging capacitor, the storage capacitor and the charging capacitor being connected by the magnetic switch;
the charge capacitor of the upper-order magnetic compression unit simultaneously serves as the energy storage capacitor of the lower-order magnetic compression unit.
3. A dual pulse power supply as claimed in claim 2, characterized in that the inductance of the magnetic switch when it reaches a magnetically saturated state is smaller than the inductance value of the charging inductance (16).
4. A dual pulse power supply according to claim 1, characterized in that the first path power supply module (1), the second path power supply module (2) and the pulse transformer are commonly connected.
5. The double-pulse power supply according to claim 1, wherein the control chip of the time sequence control unit (7) adopts an AVR single chip microcomputer.
6. A dual pulse power supply as defined in claim 1, wherein the pulse transformer is a Tesla transformer.
7. A double pulse power supply according to claim 1, characterized in that the first path energy storage capacitor (5) and the primary winding (12) form a primary resonant circuit, and the secondary winding (13) and the secondary high voltage capacitor (14) form a secondary resonant circuit.
8. A method of operating a dual pulse power supply as claimed in any one of claims 1 to 7, comprising the steps of:
s1, a first path of energy storage capacitor (5) is charged to a preset voltage value by a first path of power supply module (1) through a first path of charging resistor (3); the second path of energy storage capacitor (6) is charged to a preset voltage value by the second path of power supply module (2) through the second path of charging resistor (4);
s2, a time sequence control unit (7) sends a trigger voltage signal to a first main switch (8) to trigger the first main switch (8) to be turned on;
s3, discharging the first energy storage capacitor (5) to the primary winding (12) through the first main switch (8), wherein the first energy storage capacitor (5) and the primary winding (12) form a primary resonant circuit;
when current flows through the primary winding (12), induced current is generated in the secondary winding (13), when the induced current flows through the secondary high-voltage capacitor (14), the secondary high-voltage capacitor (14) is charged, high voltage is generated in the secondary high-voltage capacitor (14), and the secondary winding (13) and the secondary high-voltage capacitor (14) form a secondary resonance circuit;
the output voltage is rectified by a rectifying diode (15) to obtain unipolar high-voltage pulses, the rectified unipolar high-voltage pulses continue to charge the magnetic compression network (17) through a charging inductor (16), and the generation of the first high-voltage pulses is completed;
s4, after a preset time interval, the time sequence control unit (7) sends a trigger voltage signal to the second main switch (9) to trigger the second main switch (9) to be turned on;
s5, discharging the second path of energy storage capacitor (6) to the primary winding (12) through the second path of main switch (9), wherein the second path of energy storage capacitor (6) and the primary winding (12) form a primary resonant circuit;
when current flows through the primary winding (12), induced current is generated in the secondary winding (13) of the pulse transformer, when the induced current flows through the secondary high-voltage capacitor (14), the secondary high-voltage capacitor (14) is charged, high voltage is generated in the secondary high-voltage capacitor (14), and the secondary resonant circuit is formed by the secondary winding (13) of the pulse transformer and the secondary high-voltage capacitor (14);
the output voltage is rectified by a rectifying diode (15) to obtain unipolar high-voltage pulses, the rectified unipolar high-voltage pulses continue to charge the magnetic compression network (17) through a charging inductor (16), and the generation of the second high-voltage pulses is completed; ending a complete double pulse generation cycle;
s6, after waiting for a specific time, repeating the steps S1-S5, and starting the next double pulse generation period.
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