CN105050308A - Device and method for modulating hyper-stable high power pulse - Google Patents
Device and method for modulating hyper-stable high power pulse Download PDFInfo
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Abstract
The invention relates to a device and a method for modulating hyper-stable high power pulse, wherein the device for modulating the hyper-stable high power pulse is connected with a pulse transformer and a klystron, and comprises a control module, a power supply module and a discharging module; the control module comprises a power distribution combination 1, an assistant power supply combination, a modulator control and protection combination, an oscilloscope combination, 6 focusing magnetic field power supply combinations and one alternating current static power supply combination; the power module comprises a power distribution combination 2, a bias magnet power supply combination, a thyratron filament supply power supply combination, a klystron filament supply power supply combination, a passive power factor revision combination and a charging power supply, wherein the charging power supply comprises a charging power supply combination 1 and a charging power supply combination 2; the discharging module comprises a PFN, a thyratron discharge switch, an RD absorption circuit and a PFN far end voltage sampling circuit. The device of the method is higher in working stability and excellent in cost performance, and could meet the requirement of an electron linear accelerator for a microwave power source.
Description
Technical field
The present invention relates to high-energy physics field, particularly relate to a kind of apparatus and method of overstable highpowerpulse modulation.
Background technology
The E3730A klystron of Toshiba needs power-supply system to provide the high voltage pulse of 312kV, 362A for it when working, pulse modulator rated output power 113MW, its front end is the pulse transformer of 1:15, high power pulsed modulator long-term work stability conventional is at present 0.5%, in order to adapt to the stability requirement of electron linear accelerator long-term work to velocity of electrons, need the high power pulsed modulator that stability is higher.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of apparatus and method of overstable highpowerpulse modulation, and working stability Du Genggao, meets the demand of electron linear accelerator to microwave power source.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of device of overstable highpowerpulse modulation, is connected successively with klystron with pulse transformer, comprises control module, power module and discharge module;
Described control module is used for receiving from electrical network distribution commercial power, provides accessory power supply and send to described power module to power up control command to described power module;
Described power module is used for powering up to described discharge module according to powering up control command;
Described discharge module is used for after powering up end, produces cathode high voltage pulse.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described control module comprises distribution combination 1, accessory power supply combination, combination is protected in modulator control, oscilloscope combines, 6 focusing magnetic field power source combinations exchange the combination of quiet variable power source with 1;
Described power module comprises distribution combination 2, magnetic bias power source combination, the combination of thyratron filament supply, the combination of klystron filament supply, PPFC (Passive Power Factor Correction) combination and charge power supply, and wherein charge power supply comprises charge power supply combination 1 and charge power supply combination 2;
Described discharge module comprises PFN, thyratron discharge switch, RD absorbing circuit and PFN far-end voltage sampling circuit.
Further, described control module is for receiving the commercial power from electrical network distribution 50Hz380V, the 50Hz380V commercial power of electrical network distribution exports the combination of described PPFC (Passive Power Factor Correction) to by described distribution combination 1 on the one hand, described magnetic bias power source combination, 6 described focusing magnetic field power source combinations exchange the combination of quiet variable power source with described, directly delivers to described modulator control on the other hand and protects combination and described accessory power supply combines.
Further, described PPFC (Passive Power Factor Correction) combination is connected with described charge power supply, for correcting power factors;
Described magnetic bias power supply is connected with described pulse transformer, for providing bias current to described pulse transformer;
6 described focusing magnetic field power source combinations are connected with described klystron respectively, for providing focusing magnetic field electric current to described klystron;
The combination of described interchange quiet variable power source is combined 2 with described distribution and is connected, for stable alternating current being exported to described distribution combination 2.
Further, the combination of described accessory power supply is protected combine with described modulator control and is connected, and powers for DC fan, relay, the contactor comprised for described modulator control guarantor combination;
Described modulator control protects combination for controlling overstable highpowerpulse modulating device each several part of the present invention by scheduled timing work;
Described modulator control guarantor combination is combined with described oscilloscope and is connected, and described oscilloscope combination is used for pulse voltage and the current waveform of real-time monitored overstable highpowerpulse modulating device of the present invention.
Further, described distribution combination 2 is protected combination reception from described modulator control and is powered up control command, controls described charge power supply, the powering up of the combination of described thyratron filament supply and the combination of described klystron filament supply;
Described charge power supply is connected with described PFN, for being described PFN charging; Described thyratron filament supply combination is connected with described thyratron discharge switch, for the energize filaments to described thyratron discharge switch; Described klystron filament supply combination is connected with described klystron, for the energize filaments to described klystron;
One end of described thyratron discharge switch is protected to combine with described modulator control and is connected, and protects being combined as after described thyratron discharge switch sends trigger impulse, the conducting of described thyratron discharge switch when described modulator control; The other end of described thyratron discharge switch is connected with described PFN, for providing high voltage pulse through described pulse transformer to described klystron; Described RD absorbing circuit is connected with described PFN, for absorbing the reverse voltage spike of described PFN at impulse duration; Described PFN far-end voltage sampling circuit is connected with described PFN, for indicating the charge condition of described PFN between described PFN charge period.
Further, described charge power supply combination 1 provides energy for described PFN, and described charge power supply combines 2 pressure stabilization functions.
Further, described PFN comprises two PFN in parallel, and ρ=7.0 Ω, every single PFN are made up of 12 joints, and often 32nF, inductance 1.8 μ F is held in economize on electricity, and the common port of described PFN is the monoblock copper coin that 2mm is thick.
Further, described thyratron discharge switch is hydrogen thyratron CX1536A.
The another kind of technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of method of overstable highpowerpulse modulation, use the device of overstable highpowerpulse modulation according to any one of claim 1 to 9, the device of described overstable highpowerpulse modulation is connected with klystron successively with pulse transformer, and the device of described overstable highpowerpulse modulation comprises control module, power module and discharge module; Comprise the following steps:
Step S1, control module receives the commercial power from electrical network distribution;
Step S2, control module provides accessory power supply to power module and sends to power module and powers up control command;
Step S3, power module powers up to discharge module according to powering up control command;
Step S4, at the end of powering up, discharge module produces cathode high voltage pulse.
The invention has the beneficial effects as follows: working stability degree, more than 0.1%, meets the demand of electron linear accelerator to microwave power source.
Accompanying drawing explanation
Fig. 1 is the structure chart of the electronic line of sight accelerating system of overstable highpowerpulse modulating device application of the present invention;
Fig. 2 is the structure chart of overstable highpowerpulse modulating device of the present invention;
Fig. 3 is the concrete structure figure of overstable highpowerpulse modulating device of the present invention;
Fig. 4 is overstable highpowerpulse modulating device hypostazation structure chart of the present invention;
Fig. 5 is local aobvious control surface chart;
Fig. 6 is remote operator interface figure;
Fig. 7 is the flow chart of overstable highpowerpulse modulator approach of the present invention.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Fig. 1 is the structure chart of the electronic line of sight accelerating system of overstable highpowerpulse modulating device application of the present invention.
As shown in Figure 1,50Hz380V three-phase four-wire system AC conversion from electrical network is high voltage pulse by overstable highpowerpulse modulating device of the present invention, boost through pulse transformer, for klystron provides high voltage pulse, be applied in electron linear accelerator, be one of key components of electron linear accelerator, klystron described in the present invention is the E3730A klystron of Toshiba.
Fig. 2 is the structure chart of overstable highpowerpulse modulating device of the present invention.
As shown in Figure 2, a kind of device of overstable highpowerpulse modulation, be connected with klystron with pulse transformer, comprise control module, power module and discharge module, control module is for receiving the commercial power from electrical network distribution, be generally 50Hz380V, and provide accessory power supply to power module and power up control command to power module transmission; Power module is used for powering up to discharge module according to powering up control command; Discharge module is for generation of cathode high voltage pulse.
Fig. 3 is the concrete structure figure of overstable highpowerpulse modulating device of the present invention.
As shown in Figure 3, control module comprises distribution combination 1, accessory power supply combination, combination is protected in modulator control, oscilloscope combines, 6 focusing magnetic field power source combinations exchange the combination of quiet variable power source with 1.Power module comprises distribution combination 2, magnetic bias power source combination, the combination of thyratron filament supply, the combination of klystron filament supply, PPFC (Passive Power Factor Correction) combination and charge power supply, and wherein charge power supply comprises charge power supply combination 1 and charge power supply combination 2.Discharge module comprises PFN, thyratron discharge switch, RD absorbing circuit and PFN far-end voltage sampling circuit.
The 50Hz380V commercial power of electrical network distribution exports PPFC (Passive Power Factor Correction) combination, magnetic bias power source combination, 6 focusing magnetic field power source combinations to by distribution combination 1 on the one hand and exchanges the combination of quiet variable power source, directly delivers to modulator control on the other hand and protects combination and accessory power supply combines.
PPFC (Passive Power Factor Correction) combination is connected with charge power supply, for correcting power factors; Magnetic bias power supply is connected with pulse transformer, for providing bias current to pulse transformer; 6 focusing magnetic field power source combinations are connected with klystron respectively, are specifically namely connected with the focusing magnetic field of klystron, for providing focusing magnetic field electric current to klystron; Exchanging the combination of quiet variable power source combine 2 with distribution and be connected, combining 2 for stable alternating current being exported to distribution.
Accessory power supply combination is protected to combine with modulator control and is connected, for protecting the power supply such as DC fan, relay, contactor of combining and comprising for modulator control; Modulator control is protected combination and is used for accepting electron accelerator systems guidance command, controls overstable highpowerpulse modulating device each several part of the present invention by scheduled timing work, carries out real time communication simultaneously by Ethernet and electron accelerator systems; Modulator control guarantor combination is combined with oscilloscope and is connected, and oscilloscope combination is used for real-time monitored overstable highpowerpulse modulating device pulse voltage of the present invention and current waveform.
Distribution combines 2 and powers up control command from modulator control guarantor combination reception, and what control charge power supply, the combination of thyratron filament supply and klystron filament supply combined powers up; Charge power supply is connected with PFN, for being PFN charging; One end of thyratron filament supply combination is connected with thyratron discharge switch, for the energize filaments to thyratron discharge switch; The combination of klystron filament supply is connected with klystron, for klystron energize filaments.
One end and the modulator control of thyratron discharge switch are protected to combine and are connected, and protect being combined as after thyratron sends trigger impulse, the conducting of thyratron discharge switch when modulator control; The other end of thyratron discharge switch is connected with PFN, for providing high voltage pulse through pulse transformer to klystron; RD absorbing circuit is connected with PFN, for absorbing the reverse voltage spike of PFN at impulse duration; PFN far-end voltage sampling circuit is connected with PFN, for indicating PFN charge condition between PFN charge period.
The detailed process that in the present invention, charge power supply is charged to PFN is: powerful charge power supply combination 1 provides main energy for PFN, the DC high-voltage power supply of small-power high stable in parallel with it and charge power supply combination 2 mainly play pressure stabilization function, and finally for PFN fills the burning voltage of 44.0kV with.
In the one-period of overstable highpowerpulse modulating device of the present invention work, thyratron discharge switch turns off, in the present invention, thyratron discharge switch selects the hydrogen thyratron CX1536A of e2v company, charge power supply combination 1 is first that the overstable constant current charge of PFN is to 43.7kV, high-voltage switch gear is open-minded again, high stability charge power supply combination 2 charges to 44kV for PFN, and keep a period of time, then charge closing power supply, now the voltage stability of PFN can reach 0.01%, at this moment hydrogen thyratron CX1536 is opened, the energy of the upper storage of PFN forms pulse, by pulse transformer for klystron provides high voltage pulse, klystron is made to export the microwave radio power amplified.
PFN in the present invention comprises two PFN in parallel, and ρ=7.0 Ω, every single PFN are made up of 12 joints, often 32nF is held in economize on electricity, inductance 1.8 μ F, design can ensure that later stage flatness of wave width is not less than 3.0 μ s like this, and the half width τ of modulating pulse is 5.0 μ s.For reducing the impact of distributed capacitance and lead-in inductance, the common port of PFN adopts the monoblock copper coin that 2mm is thick; 12 joint PFN electric capacity adopt biserial arrangement, often row 12 electric capacity.
When delivering to the isolating transformer of the combination of thyratron filament supply and hydrogen generator power supply from stable 50Hz, 220V power supply exchanging quiet variable power source, to thyratron filament, hydrogen generator feed.
The operation principle of overstable highpowerpulse modulating device of the present invention is: charge power supply is charged to PFN by charging resistor, isolated component, and at the end of charging, PFN is filled with electricity; During electric discharge, under the excitation of trigger impulse, the conducting of thyratron discharge switch, PFN by discharge circuit by Energy Transfer to klystron.In the event of a match, the pulse voltage amplitude obtained on the former limit of pulse transformer is similar to the half of charge power supply voltage, and its impulse waveform is determined by PFN.Boosted by 1:15 pulse transformer, obtain the high pressure of 312kV, ensure that klystron normally works.
The measure of parameter stability of isolating diode, charging resistor, PFN inductance and electric capacity of charging in the present invention is: the heat radiation keeping test site good, constant temperature, cooling fluid constant temperature; The measure that the tube voltage drop of thyratron discharge switch is stable: hydrogen thyratron filament supply, hydrogen generator power supply, trigger stable, the heat radiation keeping test site good, constant temperature; The measure that high-voltage switch gear conduction voltage drop is stable: the stability of accessory power supply, cooling fluid constant temperature.
Fig. 4 is overstable highpowerpulse modulating device hypostazation structure chart of the present invention.
As shown in Figure 4, in concrete practical application, can by control module, power module and the discharge module in overstable highpowerpulse modulating device of the present invention respectively entity turn to control cubicle, power cabinet and electric discharge cabinet, concrete hypostazation structure is as shown in Figure 4.
In the present invention, the display of modulator control guarantor combination is undertaken by local panel display and remote master platform display.Local assembled panel display facilitates local operator to observe each part state and parameter information, and local aobvious control interface as shown in Figure 5.
Local all information is all sent to remote master platform by Ethernet, the information of each pulse modulator can be shown at remote master platform design display interface, facilitate operator on duty can remote observation running status, show bar is increased in remote interface, when a certain modulator has fault, show bar reddens look, can eject the specifying information display interface of corresponding modulating device with mouse after clicking red display bar, and remote operation aobvious control interface as shown in Figure 6.
Fig. 7 is the flow chart of overstable highpowerpulse modulator approach of the present invention.
As shown in Figure 7, a kind of method of overstable highpowerpulse modulation, comprises the following steps:
Step S1, control module receives the commercial power from electrical network distribution;
Step S2, control module provides accessory power supply to power module and sends to power module and powers up control command;
Step S3, power module powers up to discharge module according to powering up control command;
Step S4, at the end of powering up, discharge module produces cathode high voltage pulse.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device for overstable highpowerpulse modulation, is connected successively with klystron with pulse transformer, it is characterized in that, comprise control module, power module and discharge module;
Described control module is used for receiving from electrical network distribution commercial power, provides accessory power supply and send to described power module to power up control command to described power module;
Described power module is used for powering up to described discharge module according to powering up control command;
Described discharge module is used for after powering up end, produces cathode high voltage pulse.
2. the device of overstable highpowerpulse modulation according to claim 1, it is characterized in that, described control module comprises distribution combination 1, combination is protected in accessory power supply combination, modulator control, oscilloscope combination, 6 focusing magnetic field power source combinations exchange quiet variable power source and combine with 1;
Described power module comprises distribution combination 2, magnetic bias power source combination, the combination of thyratron filament supply, the combination of klystron filament supply, PPFC (Passive Power Factor Correction) combination and charge power supply, and wherein charge power supply comprises charge power supply combination 1 and charge power supply combination 2;
Described discharge module comprises PFN, thyratron discharge switch, RD absorbing circuit and PFN far-end voltage sampling circuit.
3. the device of overstable highpowerpulse modulation according to claim 2, it is characterized in that, described control module is for receiving the commercial power from electrical network distribution 50Hz380V, the 50Hz380V commercial power of electrical network distribution exports the combination of described PPFC (Passive Power Factor Correction) to by described distribution combination 1 on the one hand, described magnetic bias power source combination, 6 described focusing magnetic field power source combinations exchange the combination of quiet variable power source with described, directly delivers to described modulator control on the other hand and protects combination and described accessory power supply combines.
4. the device of overstable highpowerpulse modulation according to claim 3, is characterized in that, described PPFC (Passive Power Factor Correction) combination is connected with described charge power supply, for correcting power factors;
Described magnetic bias power supply is connected with described pulse transformer, for providing bias current to described pulse transformer;
6 described focusing magnetic field power source combinations are connected with described klystron respectively, for providing focusing magnetic field electric current to described klystron;
The combination of described interchange quiet variable power source is combined 2 with described distribution and is connected, for stable alternating current being exported to described distribution combination 2.
5. the device of overstable highpowerpulse modulation according to claim 4, it is characterized in that, the combination of described accessory power supply is protected combine with described modulator control and is connected, and powers for DC fan, relay, the contactor comprised for described modulator control guarantor combination;
Described modulator control protects combination for controlling overstable highpowerpulse modulating device each several part of the present invention by scheduled timing work;
Described modulator control guarantor combination is combined with described oscilloscope and is connected, and described oscilloscope combination is used for pulse voltage and the current waveform of real-time monitored overstable highpowerpulse modulating device of the present invention.
6. the device of overstable highpowerpulse modulation according to claim 5, it is characterized in that, described distribution combination 2 is protected combination reception from described modulator control and is powered up control command, controls described charge power supply, the powering up of the combination of described thyratron filament supply and the combination of described klystron filament supply;
Described charge power supply is connected with described PFN, for being described PFN charging; Described thyratron filament supply combination is connected with described thyratron discharge switch, for the energize filaments to described thyratron discharge switch; Described klystron filament supply combination is connected with described klystron, for the energize filaments to described klystron;
One end of described thyratron discharge switch is protected to combine with described modulator control and is connected, and protects being combined as after described thyratron discharge switch sends trigger impulse, the conducting of described thyratron discharge switch when described modulator control; The other end of described thyratron discharge switch is connected with described PFN, for providing high voltage pulse through described pulse transformer to described klystron; Described RD absorbing circuit is connected with described PFN, for absorbing the reverse voltage spike of described PFN at impulse duration; Described PFN far-end voltage sampling circuit is connected with described PFN, for indicating the charge condition of described PFN between described PFN charge period.
7. the device of overstable highpowerpulse modulation according to claim 6, is characterized in that, described charge power supply combination 1 provides energy for described PFN, and described charge power supply combines 2 pressure stabilization functions.
8. the device of overstable highpowerpulse modulation according to claim 2, it is characterized in that, described PFN comprises two PFN in parallel, and ρ=7.0 Ω, every single PFN are made up of 12 joints, often 32nF is held in economize on electricity, inductance 1.8 μ F, the common port of described PFN is the monoblock copper coin that 2mm is thick.
9. the device of overstable highpowerpulse modulation according to claim 2, it is characterized in that, described thyratron discharge switch is hydrogen thyratron CX1536A.
10. the method for an overstable highpowerpulse modulation, use the device of overstable highpowerpulse modulation according to any one of claim 1 to 9, the device of described overstable highpowerpulse modulation is connected with klystron successively with pulse transformer, and the device of described overstable highpowerpulse modulation comprises control module, power module and discharge module; It is characterized in that, comprise the following steps:
Step S1, control module receives the commercial power from electrical network distribution;
Step S2, control module provides accessory power supply to power module and sends to power module and powers up control command;
Step S3, power module powers up to discharge module according to powering up control command;
Step S4, at the end of powering up, discharge module produces cathode high voltage pulse.
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| CN109936348A (en) * | 2017-12-18 | 2019-06-25 | 中国科学院大连化学物理研究所 | Pulse-modulator high-voltage-stable device and method |
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