CN112366976A - Multistage magnetic pulse compression power supply - Google Patents
Multistage magnetic pulse compression power supply Download PDFInfo
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- CN112366976A CN112366976A CN202011283908.XA CN202011283908A CN112366976A CN 112366976 A CN112366976 A CN 112366976A CN 202011283908 A CN202011283908 A CN 202011283908A CN 112366976 A CN112366976 A CN 112366976A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
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Abstract
The invention belongs to the technical field of power supplies, and provides a multistage magnetic pulse compression power supply which mainly comprises two parts: low pressure and high pressure sections. The low-voltage part mainly comprises a main energy storage capacitor and a main switch. The high-voltage part mainly comprises a saturable transformer, a magnetic switch, an energy storage capacitor and a reactor. The main switch of the low-voltage part is connected with two ends of the primary side of the saturable transformer, and one end of the saturable transformer is connected with the main energy storage capacitor. The secondary side of the saturable transformer of the high-voltage part is connected with two ends of an energy storage capacitor, and one end of the energy storage capacitor is connected with a magnetic switch and a reactor. The multi-stage magnetic pulse compression power supply can control the voltage amplitude of the pulse and the repetition frequency of the pulse.
Description
Technical Field
The invention relates to a multi-stage magnetic pulse compression power supply, and belongs to the technical field of power supplies.
Background
The pulse power technology is generated in the 30 s of the 20 th century, and is a technology for researching generation, transmission and application of high-voltage, high-current and high-power pulses. It studies the energy storage methods of different forms, the method of converting the stored energy into high power, the transmission and measurement method of the pulse, and the switches suitable for different working conditions. Conventional high repetition rate, long life pulse generators are based on either capacitive energy storage and on-off switches or inductive energy storage and off-off switches. Magnetic pulse compression technology based on magnetic switches is an active research direction in recent years in the field of pulse power technology. The occurrence and development of the high-power pulse power system mainly aim to overcome the limitation of the pulse power system caused by the insufficient performance of high-power switches such as spark gap switches, thyristors and thyristors. Spark gap switches are gas discharge switches whose life is affected by electrode erosion and insulation aging, and whose ability to function repeatedly is limited by the gas insulation recovery time: the parameters of the thyristor, such as blocking voltage, peak current, current rise rate, etc., are far from meeting the requirements of a high-power system. By using the magnetic pulse compression technology, the pulse width and the pulse rise time can be effectively compressed, the current cargo carrying voltage amplitude is improved so as to meet the required high power requirement, the burden of a preceding stage system is reduced, and the service life and the repetition frequency are improved.
Although the capacitive energy storage generator based on the magnetic pulse compression technology is the most ideal scheme for generating high-voltage (10-100 kV), narrow pulse (100 ns) and high repetition frequency (several kHz) pulse generators at present; however, the greatest disadvantage of such a generator based on magnetic pulse compression is that in many cases, multiple compression stages are required to implement pulse width compression and each stage also requires an additional magnetic core reset circuit, and as the number of compression stages increases and the repetition frequency increases, it becomes increasingly difficult to reset the magnetic switch of each stage in time.
In recent years, the application of a novel magnetic pulse compression network solves the problem of magnetic switch reset which has long been puzzled, so that the magnetic switch can reach a very high repetition rate, and a foundation is provided for the development of a magnetic compression pulse power supply.
Disclosure of Invention
The invention aims to provide a novel efficient, economical and multistage magnetic pulse compression power supply.
The technical scheme of the invention is as follows:
the multi-stage magnetic pulse compression power supply mainly comprises two parts: low pressure and high pressure sections. The low-voltage part mainly comprises a main energy storage capacitor and a main switch (various semiconductor switches). The high-voltage part mainly comprises a saturable transformer, a magnetic switch, an energy storage capacitor and a reactor. The main switch of the low-voltage part is connected with two ends of the primary side of the saturable transformer, and one end of the saturable transformer is connected with the main energy storage capacitor. The secondary side of the saturable transformer of the high-voltage part is connected with two ends of an energy storage capacitor, and one end of the energy storage capacitor is connected with a magnetic switch and a reactor.
The main switch in the low-voltage part is controlled by a pulse generator, a photoelectric conversion module and a driving circuit. The pulse generator adopts an arm chip to generate pulses with adjustable pulse width, frequency and number, converts an electric signal into an optical signal through the photoelectric conversion module, converts the optical signal into the electric signal, outputs the electric signal to the driving circuit, generates trigger pulses to control the on and off of the switch, and couples the energy stored on the main energy storage capacitor to the energy storage capacitor on the secondary side through the saturable transformer.
The high-voltage part couples the energy on the main energy storage capacitor to the energy storage capacitor on the secondary side through the saturable transformer. The energy on the storage capacitor is transferred to the load through saturation of the magnetic switch, thereby achieving compression of the pulse. The saturable transformer and the magnetic switch both adopt amorphous metal annular magnetic cores, and the saturable transformer adopts 2#Magnetic core transformation ratio is 1: 50, the primary and secondary windings are double-layer windings, and the isolation layers are made of polytetrafluoroethylene films with the thickness of 0.1mm and are respectively 30 turns. Use of magnetic switches 7#And a magnetic core, the number of turns of which is 13.
The invention has the beneficial effects that: the invention can control the voltage amplitude of the pulse and the repetition frequency of the pulse.
Drawings
FIG. 1 is a circuit diagram of a multi-stage magnetic pulse compression power supply;
in the figure: 100 is 220V alternating current power supply system, 101 rectifier bridge, 102 charging resistor, 103 primary capacitor, 104 diode, 105 inductor, 106 main switch, 107 main energy storage capacitor, 108 first saturable transformer, 109 first energy storage capacitor, 110 second energy storage capacitor, 111 pulse trigger, 112 photoelectric conversion module, 113 driving circuit, 114 second saturable transformer, 115 third energy storage capacitor, 116 fourth energy storage capacitor, 117 first magnetic switch, 118 second magnetic switch, 119 third saturable transformer, 120 fifth energy storage capacitor, 121 sixth energy storage capacitor, 122 reactor, 123 load and 124 third magnetic switch.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
As shown in FIG. 1, the multi-stage magnetic pulse compression power supply of the invention comprises a low-voltage part and a high-voltage part, wherein the low-voltage part and the high-voltage part are directly connected;
the low-voltage part comprises a main switch 106 and a main energy storage capacitor 107, wherein one end of the main switch 106 is connected with one end of the main energy storage capacitor 107, and the other end of the main switch 106 is connected with one end of the primary side of a first saturable transformer 108; the positive polarity end of the main energy storage capacitor 107 is connected with the inductor 105, and the negative polarity end is connected with the other end of the primary side of the first saturable transformer 108; the other end of the inductor 105 is connected to the cathode end of the diode 104, the anode end of the diode 104 is connected to one end of the charging resistor 102, and the other end of the charging resistor 102 is connected to the rectifier bridge; the positive polarity end of the primary capacitor 103 is connected with the anode of the diode 104, and the negative polarity end of the primary capacitor 103 is connected with one end of the primary side of the first saturable transformer 108; the main switch 106 is controlled by a pulse generator 111, a photoelectric conversion module 112 and a drive circuit 113; one end of the pulse generator 111 is connected with one end of the photoelectric conversion module 112, the other end of the photoelectric conversion module 112 is connected with the driving circuit 113, the other end of the driving circuit 113 is connected with one end of the main switch 106, so that the main switch 106 is turned off and on, and the energy on the main energy storage capacitor 107 is coupled to the secondary side through the primary side of the first saturable transformer 108;
the high-voltage part consists of a plurality of stages of magnetic pulse compression units, and each stage of magnetic pulse compression unit consists of a first saturable transformer 108, two energy storage capacitors and a magnetic switch; one end of the primary side of a first saturable transformer 108 of the first-stage magnetic compression unit is connected with one end of a main energy storage capacitor 107, and the other end of the primary side of the first saturable transformer 108 is connected with one end of a main switch 113; one end of the secondary side of the first saturable transformer 108 is connected to one end of the second energy storage capacitor 110, and the other end of the secondary side of the first saturable transformer 108 is connected to the other end of the second energy storage capacitor 110; one end of the first energy storage capacitor 109 is connected to one end of the second energy storage capacitor 110, the other end of the first energy storage capacitor 109 is connected to one end of the first magnetic switch 117, and the other end of the first magnetic switch 117 is connected to one end of the primary side of the second saturable transformer 114 of the second stage magnetic compression unit; one end of the secondary side of the second saturable transformer 114 is connected to one end of the fourth energy storage capacitor 116, and the other end of the secondary side of the second saturable transformer 114 is connected to the other end of the fourth energy storage capacitor 116; one end of the third energy storage capacitor 115 is connected with the fourth energy storage capacitor 116, and the other end of the third energy storage capacitor 115 is connected with one end of the second magnetic switch 118; by analogy, one end of the secondary side of the third saturable transformer 119 of the nth-stage magnetic compression unit is connected with one end of the fifth energy-storage capacitor 120, the other end of the secondary side of the third saturable transformer 119 of the nth-stage magnetic compression unit is connected with the other end of the fifth energy-storage capacitor 120, one end of the sixth energy-storage capacitor 121 is connected with the third magnetic switch 124, the other end of the sixth energy-storage capacitor 121 is connected with one end of the fifth energy-storage capacitor 120, one end of the reactor 122 is connected with one end of the third magnetic switch 124, the other end of the reactor 122 is connected with the third saturable transformer 119, and the other end of the third magnetic switch 124 is connected with one end of the resistor;
when the multistage magnetic pulse compression power supply works, the power frequency alternating current power supply 100 inputs alternating current voltage, and the alternating current voltage is rectified into direct current voltage through the rectifier bridge 101. The rectified dc voltage charges a primary capacitor 103 through a charging resistor 102, and after a while, the primary capacitor 103 charges a main energy storage capacitor 107 through a diode 104, an inductor 105, and a primary side of a first saturable transformer 108 of the first stage magnetic pulse compression unit. The pulse signal generated by the pulse generator 111 is converted into an optical signal by the photoelectric conversion module 112, then the optical signal is converted into an electrical signal, the electrical signal is transmitted to the driving circuit 113, the conduction of the main switch 106 is controlled, at this time, the energy on the main energy storage capacitor 107 is coupled to the secondary side of the transformer through the main switch 106 and the primary side of the first saturable transformer 108, the transmitted energy is charged in parallel to the first energy storage capacitors 109 and 110 of the first stage of magnetic compression unit, when the first energy storage capacitors 109 and 110 are charged to the maximum value (at this time, the voltage polarity on the first energy storage capacitor 109 is up-negative-down-positive, and the voltage polarity on the second energy storage capacitor 110 is up-positive-down-negative), the first saturable transformer 108 of the first stage of magnetic compression unit just reaches saturation, at this time, the inductance of the first saturable transformer 108 sharply drops, and forms a loop with the second energy storage capacitor 110 connected in parallel to the first saturable transformer 108 to rapidly discharge, when the polarity of the voltage on the plate of the second energy-storage capacitor 110 is reversed (from the original upper positive and lower negative to the present upper negative and lower positive), the polarities of the voltages at the two ends of the first energy- storage capacitors 109 and 110 are the same and the voltages are superimposed, so that the potential between the first energy-storage capacitor 109 and the second magnetic switch 118 jumps from the original "zero" potential to about 2 times the voltage value at the two ends of the first energy-storage capacitor 109 (or the second energy-storage capacitor 110), at this time, the first magnetic switch 117 is saturated, the energy stored in the first energy- storage capacitors 109 and 110 is coupled in series to the secondary side through the primary side of the second saturable transformer 114 of the second-stage magnetic compression unit to charge the third energy- storage capacitors 115 and 116, when the third energy- storage capacitors 115 and 116 are charged to the maximum, the second saturable transformer 114 of the second-stage magnetic compression unit is saturated, at this time, the inductance of the second saturable transformer 114 drops sharply, and the fourth energy storage capacitor 116 connected in parallel forms a loop for rapid discharge. When the voltage polarity of the fourth energy-storage capacitor 116 is reversed, the voltage polarities at the two ends of the third energy- storage capacitors 115 and 116 are the same to form voltage superposition, so that the potential between the third energy-storage capacitor 115 and the second magnetic switch 118 jumps from the original "zero" potential to the voltage value at the two ends of the third energy-storage capacitor 115 (or the fourth energy-storage capacitor 116) which is about 2 times that of the second energy-storage capacitor 115 (or the fourth energy-storage capacitor 116), at this time, the second magnetic switch 118 is saturated, the third energy- storage capacitors 115 and 116 are connected in series to rapidly charge the energy-storage capacitor of the magnetic compression unit at the next stage, and so on, when the voltage polarity of the fifth energy-storage capacitor 120 is reversed at the nth stage, the voltage polarities at the two ends of the fifth energy- storage capacitors 120 and 121 are the same to superpose, so that the potential between the sixth energy-storage capacitor 121 and the third magnetic switch 124 jumps from the original zero potential to the voltage value at the two ends of, at this time, the magnetic switch is saturated, and the fifth energy storage capacitors 120 and 121 are connected in series to discharge the load 123 and the reactor 122, thereby realizing pulse compression.
Claims (1)
1. A multi-stage magnetic pulse compression power supply is characterized by comprising a low-voltage part and a high-voltage part, wherein the low-voltage part and the high-voltage part are directly connected;
the low-voltage part comprises a main switch (106) and a main energy storage capacitor (107), one end of the main switch (106) is connected with one end of the main energy storage capacitor (107), and the other end of the main switch (106) is connected with one end of the primary side of a first saturable transformer (108); the positive polarity end of the main energy storage capacitor (107) is connected with the inductor (105), and the negative polarity end of the main energy storage capacitor is connected with the other end of the primary side of the first saturable transformer (108); the other end of the inductor (105) is connected with the cathode end of the diode (104), the anode end of the diode (104) is connected with one end of the charging resistor (102), and the other end of the charging resistor (102) is connected with the rectifier bridge; the positive polarity end of the primary capacitor (103) is connected with the anode of the diode (104), and the negative polarity end of the primary capacitor (103) is connected with one end of the primary side of the first saturable transformer (108); the main switch (106) is controlled by a pulse generator (111), a photoelectric conversion module (112) and a drive circuit (113); one end of a pulse generator (111) is connected with one end of a photoelectric conversion module (112), the other end of the photoelectric conversion module (112) is connected with a driving circuit (113), the other end of the driving circuit (113) is connected with one end of a main switch (106), so that the main switch (106) is turned off and on, and energy on a main energy storage capacitor (107) is coupled to a secondary side through a primary side of a first saturable transformer (108);
the high-voltage part consists of a plurality of stages of magnetic pulse compression units, and each stage of magnetic pulse compression unit consists of a first saturable transformer (108), two energy storage capacitors and a magnetic switch; one end of the primary side of a first saturable transformer (108) of the first-stage magnetic compression unit is connected with one end of a main energy storage capacitor (107), and the other end of the primary side of the first saturable transformer (108) is connected with one end of a main switch (113); one end of the secondary side of the first saturable transformer (108) is connected to one end of the second energy storage capacitor (110), and the other end of the secondary side of the first saturable transformer (108) is connected to the other end of the second energy storage capacitor (110); one end of the first energy storage capacitor (109) is connected with one end of the second energy storage capacitor (110), the other end of the first energy storage capacitor (109) is connected with one end of the first magnetic switch (117), and the other end of the first magnetic switch (117) is connected with one end of the primary side of the second saturable transformer (114) of the second-stage magnetic compression unit; one end of the secondary side of the second saturable transformer (114) is connected to one end of the fourth energy storage capacitor (116), and the other end of the secondary side of the second saturable transformer (114) is connected to the other end of the fourth energy storage capacitor (116); one end of a third energy storage capacitor (115) is connected with a fourth energy storage capacitor (116), and the other end of the third energy storage capacitor (115) is connected with one end of a second magnetic switch (118); by analogy, one end of a secondary side of a third saturable transformer (119) of the nth-stage magnetic compression unit is connected with one end of a fifth energy-storage capacitor (120), the other end of the secondary side of the third saturable transformer (119) of the nth-stage magnetic compression unit is connected with the other end of the fifth energy-storage capacitor (120), one end of a sixth energy-storage capacitor (121) is connected with a third magnetic switch (124), the other end of the sixth energy-storage capacitor (121) is connected with one end of the fifth energy-storage capacitor (120), one end of a reactor (122) is connected with one end of the third magnetic switch (124), the other end of the reactor (122) is connected with the third saturable transformer (119), and the other end of the third magnetic switch (124) is connected with one end of a resistor;
when the multistage magnetic pulse compression power supply works, alternating voltage is input into a power frequency alternating current power supply (100), and the alternating voltage is rectified into direct voltage through a rectifier bridge 101; the rectified direct-current voltage charges a primary capacitor (103) through a charging resistor (102), and after a period of time, the primary capacitor (103) charges a main energy storage capacitor (107) through a diode (104), an inductor (105) and a primary side of a first saturable transformer (108) of a first-stage magnetic pulse compression unit; the pulse signal generated on the pulse generator (111) converts an electric signal into an optical signal through the photoelectric conversion module (112), then converts the optical signal into the electric signal, transmits the electric signal to the driving circuit (113), controls the conduction of the main switch (106), and then the energy on the main energy storage capacitor (107) is coupled to the secondary side of the transformer through the main switch (106) and the primary side of the first saturable transformer (108), and the transmitted energy is charged in parallel to the first energy storage capacitor (109) and the second energy storage capacitor (110) of the first magnetic compression unit, when the first energy storage capacitor (109) and the second energy storage capacitor (110) are charged to the maximum value, the first saturable transformer (108) of the first magnetic compression unit just reaches saturation, and at the moment, the inductance of the first saturable transformer (108) sharply drops, and the second energy storage capacitor (110) connected in parallel to the first saturable transformer (108) forms a loop to discharge rapidly, when the polarity of the voltage on the polar plate of the second energy storage capacitor (110) is reversed, the voltage polarities at the two ends of the first energy storage capacitor (109) and the second energy storage capacitor (110) are the same and the voltages are superposed, so that the potential between the first energy storage capacitor (109) and the second magnetic switch (118) is transited from the original zero potential to 2 times the voltage value at the two ends of the first energy storage capacitor (109) or the second energy storage capacitor (110), at this time, the first magnetic switch (117) is saturated, the energy stored in the first energy storage capacitor (109) and the second energy storage capacitor (110) is connected in series and is coupled to the secondary side through the primary side of the second saturable transformer (114) of the second-stage magnetic compression unit to charge the third energy storage capacitor (115) and the fourth energy storage capacitor (116), and when the third energy storage capacitor (115) and the fourth energy storage capacitor (116) are charged to the maximum value, the second saturable transformer (114) of the second-stage magnetic compression unit is saturated, at the moment, the inductance of the second saturable transformer (114) is sharply reduced, and the second saturable transformer and the fourth energy storage capacitor (116) which are connected in parallel form a loop for rapid discharge; when the voltage polarity of the fourth energy storage capacitor (116) is reversed, the voltage polarities at the two ends of the third energy storage capacitor (115) and the fourth energy storage capacitor (116) are the same to form voltage superposition, so that the potential between the third energy storage capacitor (115) and the second magnetic switch (118) jumps from the original zero potential to the voltage value at the two ends of the third energy storage capacitor (115) or the fourth energy storage capacitor (116) which is 2 times that of the original zero potential, at this time, the second magnetic switch (118) is saturated, the third energy storage capacitor (115) and the fourth energy storage capacitor (116) are connected in series to rapidly charge the energy storage capacitor of the magnetic compression unit at the next stage, and so on, when the voltage polarity of the fifth energy storage capacitor (120) is reversed at the nth stage, the voltage polarities at the two ends of the fifth energy storage capacitor (120) and the sixth energy storage capacitor (121) are the same and superposed, so that the potential between the sixth energy storage capacitor (121) and the third magnetic switch (124) jumps from the original zero potential to the sixth energy storage capacitor (121) which is about 2 times that of the Or the voltage value at the two ends of the fifth energy-storing capacitor (120) is saturated at the moment, and the fifth energy-storing capacitor (120) and the sixth energy-storing capacitor (121) are connected in series to discharge the load (123) and the reactor (122), so that the compression of the pulse is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011283908.XA CN112366976A (en) | 2020-11-14 | 2020-11-14 | Multistage magnetic pulse compression power supply |
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| CN202011283908.XA CN112366976A (en) | 2020-11-14 | 2020-11-14 | Multistage magnetic pulse compression power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116470885A (en) * | 2023-06-17 | 2023-07-21 | 浙江佳环电子有限公司 | High-voltage pulse circuit system and control method thereof |
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| CN116470885A (en) * | 2023-06-17 | 2023-07-21 | 浙江佳环电子有限公司 | High-voltage pulse circuit system and control method thereof |
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