CN103326612A - Unipolar microsecond pulse high voltage power supply - Google Patents
Unipolar microsecond pulse high voltage power supply Download PDFInfo
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- CN103326612A CN103326612A CN2013102417151A CN201310241715A CN103326612A CN 103326612 A CN103326612 A CN 103326612A CN 2013102417151 A CN2013102417151 A CN 2013102417151A CN 201310241715 A CN201310241715 A CN 201310241715A CN 103326612 A CN103326612 A CN 103326612A
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Abstract
Provided is a unipolar microsecond pulse high voltage power supply. The unipolar microsecond pulse high voltage power supply comprises a main circuit system (110) and a control system (100). The main circuit system (110) finishes energy storing and charging of a power module of each stage, and the power module of each stage finishes discharging to load under the control of drive signals of the control system (100) and outputs unipolar microsecond pulse high voltage. The control system (100) generates level signals, the level signals are transmitted to a switch drive circuit of the main circuit system for generating drive control signals, so that connection and disconnection of a main circuit system switch is controlled, and pulse output is obtained at the tail end of the main circuit system. Low voltage pulses obtained by each single stage power module through discharging on a load matching resistor are added for obtaining high voltage pulses, the pulses of a plurality of stages are added synchronously so that square-wave pulses can be obtained, and then the work mode of the control system (100) is a synchronous trigger mode. Triangular waves with step edges can be obtained through delayed adding, and then the work mode of the control system (100) is a delayed trigger mode.
Description
Technical field
The present invention relates to a kind of pulsed high voltage generator.
Background technology
Pulsed high voltage generator has a wide range of applications at civil areas such as the military industry fields such as the high power particle beams, nuclear fusion, particle accelerator and biomedical engineering, material processed, three wastes processing, nanometer manufacturing, materials processing, Implantations.High-voltage pulse power source is a kind of low speed storage by energy and the special power supply device of high speed pay-out, by turning on and off of various forms switch, and the cooperation of pulse shaper, the high-voltage pulse generator of output certain width, amplitude and frequency.Development along with semiconductor switch and various magnetic materials, semiconductor switch and magnetic switch are widely used in the pulse power, its high repetition frequency, high stability, long-life, the control advantage such as simple are more and more obvious with respect to traditional gas switch.
The pulse shaping circuit that semiconductor switch cooperates with pulse transformer, magnetic switch, pulse forming line, transmission line etc., its output pulse width are comparatively fixed or very among a small circle interior adjusting, and the output pulse is the triangular pulse ripple.Rely on semiconductor switch to connect to consist of the case of high-voltage switch gear combination to exist the series average-voltage technical barrier, parameters decentralization is larger.All solid state Marx pulse generator is the canonical topology that produces high pressure Microsecond grade square wave pulse width, and circuit can realize that a cover DC power system carries out charged in parallel to multistage electric capacity, and multistage electric capacity carries out discharged in series to load.The Marx generator has been avoided the withstand voltage limited and a plurality of switch series average-voltage of single semiconductor switch hard problem, and realizes the wide region adjusting control of high-voltage pulse width and frequency by the reliable control to switch.Chinese patent 200910196678.0 " all solid state high voltage power supply with positive negative pulse stuffing output " adopts two cover Marx generator topologys to be combined as the high voltage source that a cover can produce positive polarity and negative pulse simultaneously, and pulse produces and controlled by control system; Among the Chinese patent 200910049032.X " all solid state high voltage nanosecond pulse power supply ", the charged in parallel of one group of switch control hierarchical capacitor, the discharged in series of another group switch control hierarchical capacitor is for magnetic pulse compression system provides pulsewidth and the adjustable square-wave pulse of frequency.Above two kinds of power supplys all adopt the charged in parallel discharged in series work pattern to electric capacity, all can limit the operating frequency of power supply; In addition, the bipolar pulse of patent 200910196678.0 power supplys output is square-wave pulse, and impulse form is single.Chinese patent 201110388834.0 " programmable pulse generator that is used for the repeated frequency high-voltage pulse power ", the programmable pulse generator that proposes can obtain multichannel time-delay start pulse signal, delay time between each road signal pulsewidth, frequency and each road can be regulated continuously, for the parameters such as high voltage source adjusting pulsewidth, frequency, voltage improve triggering signal, but can only export the action of low-voltage pulse of 1-15V.
Summary of the invention
The object of the invention is to overcome the shortcomings such as existing pulse power output pulse waveform is single, the difficult adjusting of pulsewidth, propose a kind of modular repetition rate unipolarity microsecond pulse high voltage source.This pulse power can produce the square-wave pulse that frequency, pulsewidth, amplitude can regulate continuously and the triangular waveform with ladder edge, and this power supply can be realized positive polarity or the output of negative polarity high-voltage pulse.
The present invention mainly comprises main circuit system and control system two parts, and main circuit system is finished the energy storage charging of each single-stage power supply module, and each single-stage power supply module is finished to load discharge output single-pole microsecond pulse high pressure under the control of control system driving signal.Control system produces level signal, and level signal is delivered to the switch driving circuit of main circuit system, produces drive control signal, thus each single-stage switch of control main circuit system open shutoff, obtain pulse output at the end of main circuit system.
Described main circuit system comprises AC power supply system, AC voltage regulator, multi-stage power source module, switch driving circuit, load matched resistance etc.AC power supply system is the power frequency mains system, and AC power supply system is connected with the input of AC voltage regulator, and the output of AC voltage regulator provides energy source for the multi-stage power source module.Described multi-stage power source module is directly connected by wire by a plurality of single-stage power supply modules and is consisted of.Each single-stage power supply module comprises isolating transformer, rectification module, capacitor, switch and fly-wheel diode; The former limit of isolating transformer is connected with the secondary output of AC voltage regulator, obtain the adjustable alternating current of voltage, the secondary of isolating transformer is connected with the ac input end of rectification module, obtain direct voltage through over commutation at the output of rectification module, the output of rectification module directly is connected with the two ends of capacitor is powered, and switch, capacitor and fly-wheel diode are cascaded.Fly-wheel diode turn-offs during switch, and fly-wheel diode was open-minded when switch turn-offed.
Described control system mainly comprises programmable pulse generator, synchronous control system, delay control system, and the part such as auxiliary power supply system.Programmable pulse generator produces the multichannel delay pulse signal, the electric signal input end of electrical-optical modular converter is connected by wire in the output of programmable pulse generator and the synchronous control system, synchronous control system can realize that the single channel pulse signal is to the conversion of Multi-path synchronous drive pulse signal, the output of programmable pulse generator is connected with the electric signal input end of electrical-optical modular converter in the delay control system, to electrical-optical modular converter input multichannel delay pulse signal.Delay control system can realize that multiplex pulse signal arrives transmission and the conversion of multichannel drive pulse signal, and the independently-powered output in the auxiliary power supply system is connected with feeder ear in synchronous control system, the delay control system respectively by wire.
Described synchronous control system comprises electrical-optical modular converter, optical branching device, light-electric modular converter, switch drive module.The output of programmable pulse generator is connected with the electric signal input end of described electrical-optical modular converter, the light output end of electrical-optical modular converter is connected with the single channel input of optical branching device, the multi-path light output of optical branching device is connected with the light input end of light-electric modular converter respectively through optical fiber, electric output at light-electric modular converter obtains the synchronous signal of telecommunication, the synchronous electric signal is connected with the signal input port of switch drive module respectively, opens at the output acquisition switch of switch drive module and turn-offs needed driving pulse.
Described delay control system comprises electrical-optical modular converter, light-electric modular converter, switch drive module.The multichannel time-delay electric impulse signal of programmable pulse generator is connected with the electrical input of electrical-optical modular converter respectively, the light output end of electrical-optical modular converter is connected by the light input end of optical fiber with light-electric modular converter respectively, to light-electric modular converter input time delay light signal, obtain the electric impulse signal of time-delay at the electric output of light-electric modular converter, described electric impulse signal input switch driver module obtains switch in switch drive module and opens the needed delay and running pulse of shutoff.
Described auxiliary power supply system comprises 5V Li battery pack and 15V Li battery pack.The power output end of the 5V Li battery pack in the secondary power system is connected the power supply port of electric modular converter with the electrical-optical modular converter respectively and is connected with light, the power output end of 15V Li battery pack is connected with the feeder ear of switch drive module respectively.
The operation principle of unipolarity microsecond pulse high voltage source of the present invention is described as follows:
Basic functional principle of the present invention is that a plurality of single-stage power supply module series connection are to the load matched conductive discharge, the action of low-voltage pulse that each single-stage power supply module obtains in the load matched resistance discharge acquisition high-voltage pulse that superposes, the synchronous stack of multistage pulses can obtain square-wave pulse, and the time-delay stack can obtain to have the triangular wave on ladder edge.In the charging process, the multi-stage power source module shares an AC power supply system and an AC voltage regulator, AC power supply system output is as the input of AC voltage regulator, carry out input voltage regulation, the output voltage of AC voltage regulator is as the input of the isolating transformer of each level power supply module, boost, isolating transformer plays and boosts, the buffer action of interstage voltage isolation, high pressure and AC power supply system.The isolating transformer output voltage of every one-level passes through respectively the rectification module rectification, is capacitor charging, obtains direct voltage.The switch of each single-stage power supply module is opened shutoff synchronously in the Multi-stage module under switch driving circuit control, obtains the square-wave pulse waveform on the load matched resistance; Shutoff is opened in the time-delay under switch driving circuit control of the switch of each single-stage power supply module, obtains to have the triangular wave on ladder edge on the load matched resistance.Open when switch time-delay and to turn-off or certain one-level module when breaking down, the afterflow effect is played in the fly-wheel diode conducting.
The control mode of control system is to trigger synchronously and two kinds of patterns of time-delay triggering.Two kinds of patterns adopt respectively different circuit, when the multiplex pulse signal rising edge is in synchronization, are synchronous triggering; When the multiplex pulse signal rising edge is in the different moment, be that time-delay triggers, physical circuit is as follows.
When being in synchronous trigger mode, control system provides the driven in synchronism pulse signal for the switch driving circuit in the main circuit system.At first passed through the electrical-optical modular converter of synchronous control system by one road pulse signal of its programmable pulse generator, electric impulse signal is converted to light pulse signal, this light pulse signal is through the input of Optical Fiber Transmission as optical branching device, obtain the light pulse signal of Multi-path synchronous at the output of optical branching device, the Multi-path synchronous light pulse signal through Optical Fiber Transmission respectively as the input of multistage electrical-optical modular converter, obtain the electric impulse signal of Multi-path synchronous, described electric impulse signal is opened the needed driven in synchronism pulse of shutoff as the input of switch drive module synchronously at the output acquisition multiple-pole switch of switch drive module.
When being in the time-delay trigger mode, the delay control system in the control system provides the delay and running pulse signal for the switch driving circuit in the main circuit system.Passed through respectively the electrical-optical modular converter of delay control system by the multichannel time-delay electric impulse signal of the output of the programmable pulse generator in the control system, the Multi-path electricity pulse signal is converted to the multi-path light pulse signal, the multi-path light pulse signal is by Optical Fiber Transmission, as the input of light-electric modular converter, obtain multichannel time-delay electric impulse signal.Multichannel time-delay electric impulse signal is as the input of switch drive module, opens and turn-offs needed delay and running pulse thereby obtain the multiple-pole switch time-delay at the output of switch drive module.
Adopt Optical Fiber Transmission effectively high-tension circuit and low-voltage control circuit to be isolated, guarantee insulation, reduce to disturb.
Electrical-optical modular converter in synchronous control system and the delay control system and light-electric modular converter is battery-powered by 5V Li respectively, and switch drive module at different levels are battery-powered by 15V Li respectively.Purpose is each inter-stage voltage isolation of realization, the insulation of high potential point and potential point when guaranteeing voltage stack discharge.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the system block diagram of repetition rate unipolarity microsecond pulse high voltage source, among the figure: 100 control system, 101 programmable pulse generators, 102 synchronous control systems, 103 delay control systems, 104 auxiliary power supply systems, 110 main circuit systems, 111 AC power supply system, 112 AC voltage regulator, 113,114 and 115 single-stage power supply modules, 116 load matched resistance, switch driving circuit 118,120 multi-stage power source modules;
Fig. 2 is multi-stage power source modular system block diagram, among the figure: 200 multi-stage power source modules, 201,211 and 221 isolating transformers, 202,212 and 222 rectification modules, 203,213 and 223 capacitors, 204,214 and 224 fly-wheel diodes, 205,215 and 225 switches;
Fig. 3 is the delay control system block diagram, among the figure: 300 programmable pulse generators, 301,311 and 321 electrical-optical modular converters, 302,312 and 322 light-electric modular converter, 303,313 and 323 switch drive module;
Fig. 4 is the synchronous control system block diagram, among the figure: 400 programmable pulse generators, 410 electrical-optical modular converters, 401 optical branching devices, 402,412 and 422 light-electric modular converter, 403,413 and 423 switch drive module;
Fig. 5 is the execution mode block diagram of repetition rate unipolarity microsecond pulse high voltage source, among the figure: 500 AC voltage regulator, 501,511 and 521 isolating transformers, 502,503,504,505,512,513,514,515,522,523,524 and 525 rectifier diodes, 506,516 and 526 capacitors, 507,517 and 527 switches, 509,519 and 529 switch drive module, 508,518 and 528 fly-wheel diodes, 510 load matched resistance, 520 the earth.
Embodiment
Figure 1 shows that the structured flowchart of the embodiment of unipolarity microsecond pulse power supply of the present invention.
As shown in Figure 1, the present invention includes main circuit system 110 and control system 100 two parts.Described main circuit system 110 produces high voltage direct currents, the switch of described control system 100 control main circuit system multi-stage power source modules open shutoff, produce the needed drive pulse signal of high-voltage pulse.In the main circuit system 110, AC power supply system and AC voltage regulator are charged to the multi-stage power source module, each single-stage power supply module obtains unipolarity microsecond pulse voltage in the discharge of load matched resistance, obtains unipolarity microsecond pulse high pressure after the multistage action of low-voltage pulse stack.In the control system 100, the output control pulse signal of programmable pulse generator, be converted into successively the light pulse signal of Multi-path synchronous by electrical-optical modulus of conversion, optical fiber and optical branching device, each road light pulse signal is converted into electric impulse signal by optical fiber and electrical-optical modular converter respectively successively, each road electric impulse signal is as the input of the switch driving circuit 118 in the main circuit system 110, thereby the realization multiple-pole switch is opened shutoff synchronously, and each the single-stage power supply module in the control multi-stage power source module is discharged at load matched resistance.
Described main circuit system 110 comprises AC power supply system 111, AC voltage regulator 112, switch driving circuit 118, multi-stage power source module 120 and load matched resistance 116.Multi-stage power source module 120 is connected in series by a plurality of single-stage power supply modules and forms.Multi-stage power source module 120 shown in Figure 1 is that three single-stage power supply modules 113,114,115 are composed in series.
In the main circuit system 110, described AC power supply system 111 is as power supply.AC power supply system 111 is connected with the former limit input of AC voltage regulator 112, realizes the adjusting of voltage, has directly determined the amplitude of output high-voltage pulse.The secondary output of AC voltage regulator 112 is as the input of each single-stage power supply module of multi-stage power source module 120, with the isolating transformer 201 in the multi-stage power source module 120,211,221 former limit input connects, multi-stage power source module 120 is connected with load matched resistance 116, under the driving signal controlling that switch driving circuit (118) produces, three single-stage power supply modules 113 of multi-stage power source module 120,114, can be to 116 discharges of load matched resistance after 115 series connection, two ends at load matched resistance 116 namely can obtain unipolarity microsecond pulse high pressure, this high voltage pulse waveform is by single-stage power supply module 113,114,115 stacks produce, and control system 100 forms drive pulse signal turning on and off through switch driving circuit 118 control single-stage power supply module switch at different levels.
The input of the input that the output of programmable pulse generator 101 is connected with synchronous control system respectively, delay control system 103 connects, and the independently-powered output in the auxiliary power supply system 104 is connected with feeder ear in synchronous control system 102, the delay control system 103 respectively.
The switch that control system 100 produces single-stage power supply modules at different levels cut-offs needed drive pulse signal.A kind of control mode of control system 100 is synchronous trigger mode.Described synchronous trigger mode is to produce pulse duration by programmable pulse generator 101, ten road electric impulse signals that frequency can be regulated, delay time between each road pulse signal can be regulated, road electric impulse signal output in ten road electric impulse signals is as the input of synchronous control system 102, be connected with the electrical input of electrical-optical modular converter 410 in the synchronous control system 102, the road light pulse signal that the light output end of the electrical-optical modular converter 410 after the electric light conversion in synchronous control system 102 obtains, the light output end of electrical-optical modular converter 410 is connected with optical branching device 401, one road light pulse signal obtains the Multi-path synchronous light pulse signal by optical branching device 401, the Multi-path synchronous light pulse signal is transmitted through the fiber to light-electric modular converter 402,412,422 light input end, after opto-electronic conversion at light-electric modular converter 402,412,422 electric output obtains the Multi-path synchronous electric impulse signal, the switch drive module 403 of Multi-path synchronous electric impulse signal input synchronous control system 102,413,423 input, thereby obtain the needed driving pulse of variable connector synchronous switching off at output, switch drive module 403,413,423 output is connected with switch driving circuit 118 in the main circuit system 110, the switch 205 of control multi-stage power source module, 215,225 open shutoff, main circuit can produce the square wave high-voltage pulse under this synchronous trigger mode.Another kind of control mode is the time-delay triggering mode, under the time-delay triggering mode, the multichannel time-delay electric impulse signal that is produced by programmable pulse generator 101 is transferred to the electrical-optical modular converter 301 in the delay control system 103,311,321 electrical input, electrical-optical modular converter 301 after the electric light conversion in delay control system 103,311, the multichannel time-delay light pulse signal that 321 light output end obtains, multichannel time-delay light pulse signal is transmitted through the fiber to light-electric modular converter 302,312,322 light input end, after opto-electronic conversion at light-electric modular converter 302,312,322 electric output obtains multichannel time-delay electric impulse signal, the switch drive module 303 of multichannel time-delay electric impulse signal input time delay control system 103,313,323 input, thereby obtain the variable connector time-delay at output and cut-off needed driving pulse, switch drive module 303,313,323 output is connected with switch driving circuit 118 in the main circuit system 110, the switch 205 of control multi-stage power source module, 215,225 open shutoff, main circuit can obtain to have the triangular wave high-voltage pulse on trapezoidal edge under this time-delay trigger mode.Synchronous control system 102 is not worked simultaneously with delay control system 103, by auxiliary power supply system 104 independently respectively to synchronous control system 102 and delay control system 103 power supplies.Synchronous control system 102 and delay control system 103 adopt the isolation supply power mode of Li battery pack, play the buffer action of main circuit and control circuit.
Figure 2 shows that the structured flowchart of multi-stage power source module 120.Multi-stage power source module 120 is made of the first single-stage power supply module 113, the second single-stage power supply module 114,115 series connection of the 3rd single-stage power supply module, each single-stage power supply module includes the parts such as isolating transformer, rectification module, capacitor, fly-wheel diode, switch, the secondary of isolating transformer is connected on the input two ends of rectification module, the output of rectification module is connected on the capacitor two ends, capacitor and fly-wheel diode, switch series connection.Be specially: in the first single-stage power supply module 113, the secondary of the first isolating transformer 201 is connected to the two ends of the first rectification module 202 inputs, the output of the first rectification module 202 is connected on the two ends of the first capacitor 203, the first capacitor 203 and the first fly- wheel diode 204, and 205 series connection of the first switch; In the second single-stage power supply module 114, the secondary of the second isolating transformer 211 is connected to the two ends of the second rectification module 212 inputs, the output of the second rectification module 212 is connected on the two ends of the second capacitor 213, the second capacitor 213 and the second fly-wheel diode 214, and second switch 215 series connection; In the 3rd single-stage power supply module 115, the secondary of the 3rd isolating transformer 221 is connected to the two ends of the 3rd rectification module 222 inputs, the output of the 3rd rectification module 222 is connected on the two ends of the 3rd capacitor 223, the 3rd capacitor 223 and the 3rd fly-wheel diode 224, and 225 series connection of the 3rd switch.
The function of multi-stage power source module 120 is to produce high-voltage pulse.The output of AC voltage regulator 112 connects described the first isolating transformer 201, the second isolating transformer 211, and the input of the 3rd isolating transformer 221, and isolating transformer 201,211,221 plays the effect of boosting and isolating.Isolating transformer 201,211,221 output are respectively as the first rectification module 202, the second rectification module 212, and the input of the 3rd rectification module 222, three isolating transformers 201,211,221 output are connected with three rectification modules 202,212,222 ac input end respectively, carry out rectification.Three rectification modules 202,212,222 output respectively with the first capacitor 203, the second capacitor 213, and an end of the 3rd capacitor 223 connects, and charges, and obtains galvanic currents at three capacitors 203,213,223 and presses.Driven in synchronism pulse output arrival switch drive module 118 when synchronous control system 102, when the driving signal that the control switch driver module produces arrives the first switch 205, second switch 215 and the 3rd switch 225, three switches 205,215,225 are opened shutoff simultaneously, three single-stage power supply modules 113,114,115 in the multi-stage power source module 120 are together in series to 116 discharges of load matched resistance, obtain square wave pulse voltage.Delay and running pulse output arrival switch driving circuit 118 when delay control system 103, the driving signal that switch driving circuit 118 produces arrives three switches 205, at 215,225 o'clock, shutoff is opened in three switches 205,215,225 generation time-delays, obtain the switch conduction of driving pulse, condenser voltage is superimposed upon on the load resistance; The switch that does not obtain driving pulse is in shutoff, and capacitance voltage does not superpose, but fly-wheel diode provides path for circuit, plays the afterflow effect.Three fly-wheel diodes 204,214,224 play the afterflow effect in the time-delay control mode, also can play the normal operation that the afterflow effect does not affect whole power supply simultaneously when a certain single-stage power supply module breaks down.
Fig. 3 is the delay control system structured flowchart.Delay control system 103 has three tunnel outputs, controls respectively the shutoff of opening of the first switch 205, second switch 215 and the 3rd switch 225.Delay control system 103 mainly comprises the parts such as the first programmable pulse generator 300, the first electrical-optical modular converter 301, the second electrical-optical modular converter 311, the 3rd electrical-optical modular converter 321, the first light-electric modular converter 302, the second light-electric modular converter 312, the 3rd light-electric modular converter 322, the first switch drive module 303, second switch driver module 313, the 3rd switch drive module 323.
The effect of delay control system 103 is the switch drive pulses that obtain the multichannel time-delay.The first programmable pulse generator 300 of delay control system 103 produces the multichannel delay pulse signal, the multiple signals output of the first programmable pulse generator 300 respectively with the first electrical-optical modular converter 301, the second electrical-optical modular converter 311, the electric signal input end of the 3rd electrical-optical modular converter 321 connects, carry out electric impulse signal to the conversion of light pulse signal, the output of the first electrical-optical modular converter 301 is connected with the input of the first light-electric modular converter 302, the output of the second electrical-optical modular converter 311 is connected with the input of the second light-electric modular converter 312, the output of the 3rd electrical-optical modular converter 321 is connected with the input of the 3rd light-electric modular converter 322, three electrical-optical modular converters 301,311, the light pulse signal of 321 outputs is transferred to respectively three single-stage light-electric modular converter 302 through optical fiber, 312,322 input, carry out light pulse signal to the conversion of electric impulse signal, the output of the first light-electric modular converter 302 is connected with the input of the first switch drive module 303, the output of the second light-electric modular converter 312 is connected with the input of second switch driver module 313, the output of the 3rd light-electric modular converter 322 is connected with the input of the 3rd switch drive module 323, carry out pulse signal to the conversion that drives signal, to not have the impulse level signal of driving force to be converted to and have same pulsewidth, the driving pulse of frequency parameter, this pulse has certain driving force, can drive the switch of each single-stage power supply module.
Fig. 4 is the synchronous control system structured flowchart.Synchronous control system 102 mainly comprises the second programmable pulse generator 400, the 4th electrical-optical modular converter 410, optical branching device 401, the 4th light-electric modular converter 402, the 5th light-electric modular converter 412, the 6th light-electric modular converter 422 and the parts such as the 4th switch drive module 403, the 5th switch drive module 413.
The a certain road pulse signal of the second programmable pulse generator 400 outputs is inputted the 4th electrical-optical modular converter 410 and is carried out electric impulse signal to the conversion of light pulse signal, the light pulse signal of the 4th electrical-optical modular converter 410 outputs arrives optical branching device 401 through Optical Fiber Transmission, realize the shunt of light signal, obtain the light pulse signal of Multi-path synchronous at the output of optical branching device 401, this pulse signal is the input by Optical Fiber Transmission to the four light-electric modular converter 402 respectively, the input of the 5th light-electric modular converter 412, the input of the 6th light-electric modular converter 422, the 4th light-electric modular converter 402, the 5th light-electric modular converter 412, the output of the 5th light-electric modular converter 422 is respectively the 4th switch drive module 403, the 5th switch drive module 413, the input of the 6th switch drive module 423, three switch drive module 403,413,414 output namely can obtain synchronous driving pulse, the switch of each single-stage power supply module is opened the control of shutoff.
Fig. 5 is the execution mode block diagram of unipolarity microsecond pulse high voltage source of the present invention.Multi-stage power source module in the main circuit system of this execution mode is made of the first single-stage power supply module 113, the second single-stage power supply module 114,115 series connection of the 3rd single-stage power supply module.The AC voltage regulator 500 of main circuit system 110 be input as industrial frequency AC, AC voltage regulator 500 output end voltages are adjustable, simultaneously as each single-stage power supply module 113,114 of multi-stage power source module, 115 isolating transformer 501,511 and 521 input; Isolating transformer 501,511 with 521 exchange the respectively rectification module rectification by single-stage power supply modules at different levels of output, and be that electric capacity 506,516 and 526 charges.The rectification module of described each single-stage power supply module is respectively by diode 502,503,504 and 505, diode 512,513,514,515 and diode 522,523,524 and 525 form, each rectification module is comprised of four diodes, two diodes in parallels that diode is connected first and connected in addition, wherein two ends in parallel are output, and the middle two ends of series connection are input.
The switch of each single-stage power supply module of present embodiment is the all-controlled semiconductor switch, and this sentences IGBT is the example explanation.
As shown in Figure 5, in the described main circuit system 110, the internal components connected mode of each single-stage power supply module of multi-stage power source module 120 is as follows: 1 pin and 2 pins of AC voltage regulator 500 connect power frequency supply live wire and zero line, 1 pin of 1 pin of 1 pin of the isolating transformer 501 of 3 pin order level power supply modules 113 of AC voltage regulator 500, the isolating transformer 511 of single-stage power supply module 114 and the isolating transformer 521 of single-stage power supply module 115,4 pins of AC voltage regulator 500 connect described isolating transformer 501,511 and 521 2 pins.Described isolating transformer 501,511 and 521 3 pins connect respectively the diode 502 of rectification module, 512 and 522 anode tap, and described isolating transformer 501,511 and 521 4 pins connect respectively the diode 503 of rectification module, 513 and 523 anode tap.The negative electrode of diode 502, the negative electrode of diode 503, one end of electric capacity 506 is connected with the C of switch 507 end, the negative electrode of diode 512, the negative electrode of diode 513, one end of electric capacity 516 is connected with the C of switch 517 end, the negative electrode of diode 522, the negative electrode of diode 523, one end of electric capacity 526 is connected with the C of switch 527 end, the anode of diode 504, the anode of diode 505, the anode of diode 508 is connected with the other end of electric capacity 506, the anode of diode 514, the anode of diode 515, the anode of diode 518 is connected with the other end of electric capacity 516, the anode of diode 524, the anode of diode 525, the anode of diode 528 is connected with the other end of electric capacity 526, diode 504,505 negative electrode and diode 502,503 anodic bonding, diode 514,515 negative electrode and diode 512,513 anodic bonding, diode 524,525 negative electrode and diode 522,523 anodic bonding.Switch 507,517 is connected with the output of the switch drive module of control system respectively with the G of being connected end, and switch 507,517 is held with the E of being connected and is connected with the negative electrode of being connected with fly-wheel diode 508,518 respectively.The negative electrode of fly-wheel diode 508 is connected with an end of load matched resistance 510, and the anode of fly-wheel diode 528 is connected with the other end and the earth of load matched resistance 510.
Claims (8)
1. a unipolarity microsecond pulse high voltage source is characterized in that, described pulsed high voltage generator comprises main circuit system (110) and control system (100); Main circuit system (110) is finished the energy storage charging of power modules at different levels, and power modules at different levels are finished to load discharge output single-pole microsecond pulse high pressure under the control of control system (100) driving signal; Control system (100) produces level signal, and level signal is delivered to the switch driving circuit of main circuit system, produces drive control signal, thus the switch of control main circuit system open shutoff, obtain pulse output at the end of main circuit system.
2. according to unipolarity microsecond pulse high voltage source claimed in claim 1, it is characterized in that, described main circuit system (110) comprises AC power supply system (111), AC voltage regulator (112), switch driving circuit (118), multi-stage power source module (120) and load matched resistance (116); Described AC power supply system (111) is connected with the former limit input of AC voltage regulator (112); The output of the secondary of AC voltage regulator (112) is as the input of the power modules at different levels of multi-stage power source module (120), is connected with the former limit input of isolating transformer (201,211,221) in the multi-stage power source module (120); Multi-stage power source module (120) is connected with load matched resistance (116); Multi-stage power source module (120) is composed in series by a plurality of single-stage power supply modules, under the driving signal controlling that switch driving circuit (118) produces, load matched resistance (116) is discharged, obtain unipolarity microsecond pulse high pressure at the two ends of load matched resistance (116), this high voltage pulse waveform is produced by a plurality of single-stage power supply module stacks.
3. according to unipolarity microsecond pulse high voltage source claimed in claim 2, it is characterized in that, described multi-stage power source module (120) is made of the first single-stage power supply module (113), the second single-stage power supply module (114), the series connection of the 3rd single-stage power supply module (115); Each single-stage power supply module includes isolating transformer, rectification module, capacitor, fly-wheel diode and switch; The secondary of isolating transformer is connected on the input two ends of rectification module, and the output of rectification module is connected on the capacitor two ends, capacitor and fly-wheel diode, switch series connection.
4. according to unipolarity microsecond pulse high voltage source claimed in claim 3, it is characterized in that, in described the first single-stage power supply module (113), the secondary of the first isolating transformer (201) is connected to the two ends of the first rectification module (202) input, the output of the first rectification module (202) is connected on the two ends of the first capacitor (203), the first capacitor (203) and the first fly-wheel diode (204), and the first switch (205) series connection; In described the second single-stage power supply module (114), the secondary of the second isolating transformer (211) is connected to the two ends of the second rectification module (212) input, the output of the second rectification module (212) is connected on the two ends of the second capacitor (213), the second capacitor (213) and the second fly-wheel diode (214), and second switch (215) series connection; In the 3rd single-stage power supply module (115), the secondary of the 3rd isolating transformer (221) is connected to the two ends of the 3rd rectification module (222) input, the output of the 3rd rectification module (222) is connected on the two ends of the 3rd capacitor (223), the 3rd capacitor (223) and the 3rd fly-wheel diode (224), and the 3rd switch (225) series connection.
5. according to unipolarity microsecond pulse high voltage source claimed in claim 1, it is characterized in that, described control system (100) comprises programmable pulse generator (101), synchronous control system (102), delay control system (103) and auxiliary power supply system (104); The output of programmable pulse generator (101) is connected 102 with synchronous control system respectively) the input of input, delay control system (103) connect, the independently-powered output in the auxiliary power supply system (104) is connected with feeder ear in synchronous control system (102), the delay control system (103) respectively.
6. according to unipolarity microsecond pulse high voltage source claimed in claim 5, it is characterized in that, described synchronous control system (102) comprises the second programmable pulse generator (400), the 4th electrical-optical modular converter (410), optical branching device (401), the 4th light-electric modular converter (402), the 5th light-electric modular converter (412), the 6th light-electric modular converter (422) and the 4th switch drive module (403), the 5th switch drive module (413); The output of the second programmable pulse generator (400) connects the input of the 4th electrical-optical modular converter (410), the output of the 4th electrical-optical modular converter (410) connects the input of optical branching device (401), and the output of optical branching device (401) connects respectively the input of three light-electric modular converter (402,412,422); The output of the 4th light-electric modular converter (402) connects the input of the 4th switch drive module (403), the output of the 5th light-electric modular converter (412) connects the input of the 5th switch drive module (413), the output of the 6th light-electric modular converter (422) connects the input of the 6th switch drive module (423), and the 4th switch drive module (403), the 5th switch drive module (413) and the output of the 6th switch drive modular converter (423) are connected 110 with main circuit system) switch driving circuit (118) connect.
7. according to unipolarity microsecond pulse high voltage source claimed in claim 5, it is characterized in that, described delay control system (103) comprises the first programmable pulse generator (300), the first electrical-optical modular converter (301), the second electrical-optical modular converter (311), the 3rd electrical-optical modular converter (321), the first light-electric modular converter (302), the second light-electric modular converter (312), the 3rd light-electric modular converter (322), the first switch drive module (303), second switch driver module (313), the 3rd switch drive module (323); The multiple signals output of the first programmable pulse generator (300) is connected with the electric signal input end of the first electrical-optical modular converter (301), the second electrical-optical modular converter (311), the 3rd electrical-optical modular converter (321) respectively; The output of the first electrical-optical modular converter (301) is connected with the input of the first light-electric modular converter (302), the output of the second electrical-optical modular converter (311) is connected with the input of the second light-electric modular converter (312), and the output of the 3rd electrical-optical modular converter (321) is connected with the input of the 3rd light-electric modular converter (322); The output of the first light-electric modular converter (302) is connected with the input of the first switch drive module (303), the output of the second light-electric modular converter (312) is connected with the input of second switch driver module (313), and the output of the 3rd light-electric modular converter (322) is connected with the input of the 3rd switch drive module (323).
8. according to unipolarity microsecond pulse high voltage source claimed in claim 5, it is characterized in that, a kind of control mode of described control system (100) is synchronous trigger mode; Described synchronous trigger mode is to produce pulse duration, ten road pulse signals that frequency is adjustable by programmable pulse generator (101), and the delay time between each road pulse signal can be regulated; The electrical input of the electrical-optical modular converter (410) in the road pulse signal input synchronous control system (102) in ten road pulse signals, the road light pulse signal that after electric light conversion, obtains at the light output end of described electrical-optical modular converter (410), one road light pulse signal obtains the Multi-path synchronous light pulse signal through multi-path light splitter (401), the Multi-path synchronous light pulse signal is transmitted through the fiber to light-electric modular converter (402,412,422) light input end, after opto-electronic conversion at light-electric modular converter (402,412,422) electric output obtains the Multi-path synchronous electric impulse signal, the switch drive module (403 of Multi-path synchronous electric impulse signal input synchronous control system (102), 413,423) input, thus the needed driving pulse of variable connector synchronous switching off obtained at output; The output of switch drive module (403,413,423) is connected with switch driving circuit (118) in the main circuit system (110), the switch (205,215,225) of control multi-stage power source module open shutoff, main circuit can produce the square wave high-voltage pulse under this synchronous mode; The another kind of control mode of described control system (100) is the time-delay triggering mode, under the time-delay triggering mode, the multichannel time-delay electric impulse signal that is produced by programmable pulse generator (101) is transferred to the electrical-optical modular converter (301 in the delay control system (103), 311,321) electrical input, after electric light conversion at described electrical-optical modular converter (301,311,321) the multichannel time-delay light pulse signal that light output end obtains, multichannel time-delay light pulse signal is transmitted through the fiber to light-electric modular converter (302,312,322) light input end, after opto-electronic conversion at light-electric modular converter (302,312,322) electric output obtains multichannel time-delay electric impulse signal, the switch drive module (303 of multichannel time-delay electric impulse signal input time delay control system (103), 313,323) input obtains the variable connector time-delay at output and cut-offs needed driving pulse; The output of switch drive module (303,313,323) is connected with switch driving circuit (118) in the main circuit system (110), the switch (205,215,225) of control multi-stage power source module open shutoff, main circuit obtains to have the triangular wave high-voltage pulse on trapezoidal edge under this time-delay trigger mode; Described synchronous control system (102) is not worked simultaneously with delay control system (103).
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