CN107329516A - EAST tokamak stable state high power lower hybrid wave power modulation means - Google Patents
EAST tokamak stable state high power lower hybrid wave power modulation means Download PDFInfo
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- CN107329516A CN107329516A CN201710351697.0A CN201710351697A CN107329516A CN 107329516 A CN107329516 A CN 107329516A CN 201710351697 A CN201710351697 A CN 201710351697A CN 107329516 A CN107329516 A CN 107329516A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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Abstract
The invention discloses a kind of EAST tokamak stable state high power lower hybrid wave power modulation means, include PXI control computers, drive circuit, microwave source excitation system and klystron, PXI control computers have high speed digital I/O cards, microwave source excitation system, which includes, is sequentially connected the oscillator connect, power splitter and microwave amplifier, PIN switches are connected between the output end of oscillator and the input of power splitter, the output end of microwave amplifier is connected with the output end of klystron；PXI control computers export modulated signal, control PIN switch conductions and cut-off after the modulated signal of input is amplified by drive circuit by high speed digital I/O cards to drive circuit.The present invention realizes the algorithm for power modulation to stable state High-Power Microwave by the control of Lower Hybrid prime driving source, provides reliable and stable platform for device experiment, the application of the device will greatly promote the implementation and completion of EAST device Related Experimental Studies.
Description
Technical field
The present invention relates to stable state High-Power Microwave control technology field, specifically a kind of EAST tokamak stable state high power
Lower hybrid wave power modulation means.
Background technology
High-Power Microwave is generally used on current tokamak device both domestic and external（Lower hybrid wave）Add to carry out plasma
Heat and electric current driving, on China the first in the world platform Superconducting tokamak device EAST, are also driven using High-Power Microwave
Plasma simultaneously carries out experimental study.The stable state High Power Microwave System that the Lower Hybrid is made up of many klystrons, it is micro-
Wave power is coupled in plasma more by tying waveguide array antenna.Different Physical Experiments propose different to lower hybrid wave power
It is required that, lower hybrid wave algorithm for power modulation is a kind of wherein widely used pattern.
The original modulating system function of EAST device lower hybrid waves can not meet the demand of experiment, and its modulating frequency is relatively low, control
Also it is dumb, therefore the modulating system of the new flexible control of development is most important to device experiment operation.Other dresses domestic at present
Put the also research without this respect.
The content of the invention
It is an object of the invention to provide a kind of EAST tokamak stable state high power lower hybrid wave power modulation means, by low
The algorithm for power modulation to stable state High-Power Microwave is realized in the control of clutter system prime driving source, and being provided for device experiment stably can
The platform leaned on, the application of the device will greatly promote the implementation and completion of EAST device Related Experimental Studies.
Technical scheme is as follows：
A kind of EAST tokamak stable state high power lower hybrid wave power modulation means, it is characterised in that：Include PXI control calculating
Machine, drive circuit, microwave source excitation system and klystron, described PXI control computers have high speed digital I/O cards, described
Microwave source excitation system include and be sequentially connected the oscillator connect, power splitter and microwave amplifier, the output of the oscillator
PIN switches, the output end of the microwave amplifier and the klystron are connected between end and the input of the power splitter
Output end is connected；Described PXI control computers are believed by the high speed digital I/O cards to drive circuit output modulation
Number, the drive circuit controls described PIN switch conductions and cut-off after the modulated signal of input is amplified.
Described EAST tokamak stable state high power lower hybrid wave power modulation means, it is characterised in that：The high speed number
The model NI6259 of word I/O cards.
Described EAST tokamak stable state high power lower hybrid wave power modulation means, it is characterised in that：The klystron
Output end be connected by transmission line with tokamak device.
The present invention integrated PIN switches on the oscillator of microwave source excitation system, are used as the whole microwave excitation of control
The main switching control of system；By the control that system gross output is realized to the control of oscillator.
The present invention utilizes computer high-speed collection card to export the modulating frequency source that square-wave signal is used to control.
The present invention amplifies modulating frequency source signal to drive PIN to switch by building PIN switch driving circuits.
The computer control system of the present invention, for flexibly setting each parameter setting, including modulating frequency, dutycycle and
The start/stop time of modulation.
Beneficial effects of the present invention：
The present invention provides a simplicity and flexibly implementation method for the algorithm for power modulation of high-power microwave source, in lower hybrid wave microwave
One main control PIN switch is installed in source forcing system；High speed digital I/O cards are controlled by PXI computers（NI6259）Output
Modulate source signal；The modulation source signal of high speed digital I/O cards output controls main PIN to switch after drive circuit amplifies；Calculate
Machine needs to set the parameter of modulation source according to experiment：Modulating frequency, duty when modulate the beginning and ending time；Whole control system parameter
Can flexibly it set, modulating frequency（Up to more than 10kHz）Meet Physical Experiment needs.
Brief description of the drawings
Fig. 1 is structural principle block diagram of the present invention.
Fig. 2 is the attachment structure theory diagram of microwave source excitation system, PIN switches and klystron in the present invention.
Fig. 3 is switch time test chart of the invention.
Modulation of the Fig. 4 for the present invention under 2.45GHz lower hybrid wave power（10kHz）Output waveform figure.
Embodiment
Referring to Fig. 1,2, a kind of EAST tokamak stable state high power lower hybrid wave power modulation means include PXI controls
Computer 1, drive circuit 3, microwave source excitation system 4 and klystron 5, PXI control computers 1 have high speed digital I/O cards 2,
Microwave source excitation system 4, which includes, is sequentially connected the oscillator 4-1 connect, power splitter 4-2 and microwave amplifier 4-3, oscillator 4-1
Output end and power splitter 4-2 input between there is PIN to switch 6, microwave amplifier 4-3 output end is defeated with klystron 5
Go out end to be connected；PXI control computers 1 export modulated signal, drive circuit 3 by high speed digital I/O cards 2 to drive circuit 3
The conducting of PIN switches 6 is controlled after the modulated signal of input is amplified and is ended.
In the present invention, the model NI6259 of high speed digital I/O cards 2.
The output end of klystron 5 is connected by transmission line with tokamak device.
Below in conjunction with accompanying drawing, the present invention is further illustrated：
Referring to the similar diode of operation principle of Fig. 1,2, PIN switch 6, turn on, end during low level during high level, i.e. PXI controls
The modulated signal that computer 1 processed is exported is turned on when being high level, when the modulated signal that PXI control computers 1 are exported is low level
Cut-off.
The microwave signal of oscillator 4-1 outputs sequentially passes through PIN and switchs feeding microwave amplifier 4- after 6 and power splitter 4-2
The microwave signal driving klystron 5 of 3, microwave amplifier 4-3 output.
Klystron 5 is the vital microwave device of Lower Hybrid in EAST tokamak devices, and microwave driving source system 4 is carried
For the input signal of klystron 5, the output signal of klystron 5 is sent to tokamak device through transmission line.PIN switches 6 are connected to
Between oscillator 4-1 output end and power splitter 4-2 input, the modulation that PIN switches 6 are exported by PXI control computers 1 is believed
Number control, the output signal of whole microwave driving source system 4 is just modulated, so as to modulate the power output of klystron 5.
Present invention success is implemented in EAST devices two sets of Lower Hybrids of 2.45GHz/4MW and 4.6GHz/6MW, and takes
It must succeed.System switching time test is shown in Fig. 3, energetic start up time about 3.5us, referring to Fig. 3（a）, wherein upper waveform is modulation
Source signal, lower waveform is power output signal；Turn-off time is 0.5us, referring to Fig. 3（b）, wherein upper waveform is believed for modulation source
Number, lower waveform is power output signal.
The present invention is in the experiment of EAST devices, and lower hybrid wave power maximum modulating frequency reaches 10 kHz, power modulation waveform
See Fig. 4.
Claims (3)
1. a kind of EAST tokamak stable state high power lower hybrid wave power modulation means, it is characterised in that：Include PXI control meters
Calculation machine, drive circuit, microwave source excitation system and klystron, described PXI control computers have high speed digital I/O cards, institute
The microwave source excitation system stated, which includes, is sequentially connected the oscillator connect, power splitter and microwave amplifier, the oscillator it is defeated
Go out between end and the input of the power splitter to be connected with PIN switches, the output end of the microwave amplifier and the klystron
Output end be connected；Described PXI control computers are exported to the drive circuit by the high speed digital I/O cards and modulated
Signal, the drive circuit controls described PIN switch conductions and cut-off after the modulated signal of input is amplified.
2. EAST tokamak stable state high power lower hybrid wave power modulation means according to claim 1, it is characterised in that：
The model NI6259 of the high speed digital I/O cards.
3. EAST tokamak stable state high power lower hybrid wave power modulation means according to claim 1, it is characterised in that：
The output end of the klystron is connected by transmission line with tokamak device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351697.0A CN107329516A (en) | 2017-05-18 | 2017-05-18 | EAST tokamak stable state high power lower hybrid wave power modulation means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351697.0A CN107329516A (en) | 2017-05-18 | 2017-05-18 | EAST tokamak stable state high power lower hybrid wave power modulation means |
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| CN107329516A true CN107329516A (en) | 2017-11-07 |
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| CN201710351697.0A Pending CN107329516A (en) | 2017-05-18 | 2017-05-18 | EAST tokamak stable state high power lower hybrid wave power modulation means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164566A (en) * | 2019-04-25 | 2019-08-23 | 中国科学院合肥物质科学研究院 | A method of the plasma current for EAST device is protected |
| CN110161949A (en) * | 2019-04-25 | 2019-08-23 | 中国科学院合肥物质科学研究院 | EAST tokamak lower hybrid wave signal condition integrates and sequential control method |
| CN112702828A (en) * | 2019-10-22 | 2021-04-23 | 核工业西南物理研究院 | High-reflection active avoidance device and method for low-mixed-wave current driving system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4585986A (en) * | 1983-11-29 | 1986-04-29 | The United States Of America As Represented By The Department Of Energy | DC switching regulated power supply for driving an inductive load |
| CN1925061A (en) * | 2006-08-29 | 2007-03-07 | 中国科学院等离子体物理研究所 | Method for controlling TOKMAK discharge low noise wave power mode |
| CN102520682A (en) * | 2011-11-30 | 2012-06-27 | 中国科学院等离子体物理研究所 | Lower hybrid wave power control system |
| CN105931937A (en) * | 2016-05-03 | 2016-09-07 | 中国科学院等离子体物理研究所 | Calculation output method of total power of 6MW 4.6GHz low-clutter system |
| CN106683715A (en) * | 2016-12-16 | 2017-05-17 | 中国科学院合肥物质科学研究院 | Low hybrid wave output power control method based on plasma current |
-
2017
- 2017-05-18 CN CN201710351697.0A patent/CN107329516A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4585986A (en) * | 1983-11-29 | 1986-04-29 | The United States Of America As Represented By The Department Of Energy | DC switching regulated power supply for driving an inductive load |
| CN1925061A (en) * | 2006-08-29 | 2007-03-07 | 中国科学院等离子体物理研究所 | Method for controlling TOKMAK discharge low noise wave power mode |
| CN102520682A (en) * | 2011-11-30 | 2012-06-27 | 中国科学院等离子体物理研究所 | Lower hybrid wave power control system |
| CN105931937A (en) * | 2016-05-03 | 2016-09-07 | 中国科学院等离子体物理研究所 | Calculation output method of total power of 6MW 4.6GHz low-clutter system |
| CN106683715A (en) * | 2016-12-16 | 2017-05-17 | 中国科学院合肥物质科学研究院 | Low hybrid wave output power control method based on plasma current |
Non-Patent Citations (1)
| Title |
|---|
| 赵连敏 等: ""EAST 2MW/2450MHz 低杂波电流驱动系统综述"", 《核电子学与探测技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164566A (en) * | 2019-04-25 | 2019-08-23 | 中国科学院合肥物质科学研究院 | A method of the plasma current for EAST device is protected |
| CN110161949A (en) * | 2019-04-25 | 2019-08-23 | 中国科学院合肥物质科学研究院 | EAST tokamak lower hybrid wave signal condition integrates and sequential control method |
| CN110161949B (en) * | 2019-04-25 | 2021-11-09 | 中国科学院合肥物质科学研究院 | EAST Tokamak low clutter signal conditioning integration and time sequence control method |
| CN112702828A (en) * | 2019-10-22 | 2021-04-23 | 核工业西南物理研究院 | High-reflection active avoidance device and method for low-mixed-wave current driving system |
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Application publication date: 20171107 |