CN102520682A - Lower hybrid wave power control system - Google Patents
Lower hybrid wave power control system Download PDFInfo
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- CN102520682A CN102520682A CN2011103880264A CN201110388026A CN102520682A CN 102520682 A CN102520682 A CN 102520682A CN 2011103880264 A CN2011103880264 A CN 2011103880264A CN 201110388026 A CN201110388026 A CN 201110388026A CN 102520682 A CN102520682 A CN 102520682A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a lower hybrid wave power control system in a Tokamak experiment, which comprises 24 high-power klystrons. The output end of each high-power klystron is provided with a directional coupler. Incident power coupled by the directional coupler is sent to a detector after direct current (DC)-blocking through a DC-block and filtering through a filter, detection voltage coming out of the output end of the detector is sent to an amplifier, amplified voltage output by the amplifier is collected through an analog input module, processed through a power control lower computer, and output by an analog output module, and the output end of the analog output module is connected to a personal identification number (PIN) electrically controlled attenuator of a microwave preceding stage. By means of collection of the power control lower computer, PID algorithm and output of the analog input module, the lower hybrid wave power control system in the Tokamak experiment controls the PIN electrically controlled attenuator of the preceding stage and controls lower hybrid wave preceding stage power so that output power of the klystrons is controlled. Meanwhile, by means of collection of output power and status signals of the klystrons, working status of the system is judged, PID control is adjusted according to requirements so as to avoid output overshoot of the klystrons, ensure stability of the lower hybrid wave system, and meet requirements of the Tokamak physical experiment. The power control lower computer of the system adopts a cRIO system, and enables the control system to have accuracy and reliability of a field programmable gate array (FPAG) and flexibility of an ordinary industrial personal computer.
Description
Technical field
The invention belongs to the controlled thermonuclear fusion field, specifically is on the Tokamak nuclear fusion device, to realize the control to the lower hybrid wave output power according to the experiment needs.
Background technology
Lower hybrid wave is widely used in the nuclear fusion experimental at present, and it mainly acts on is current drives and auxiliary heating.The lower hybrid wave system is mainly through many high power klystron output powers.The output power of klystron receives influence of various factors such as microwave prime power, high pressure, magnetic field, filament.Control mainly is the high pressure that needs through setting before testing for lower hybrid wave power at home at present, and the high pressure that output was set when experiment is also opened prime PIN switch, rule of thumb confirms the power of output, carries out open loop control.This pattern has just caused instability, the uncertainty of the output of lower hybrid wave power, thereby can not satisfy the tokamak Physical Experiment requirement high to accuracy requirement.
Summary of the invention
Technical matters to be solved by this invention is to propose a kind of being implemented in the tokamak experimentation, the lower hybrid wave power control system of the output that lower hybrid wave power is accurate, stable.
Technical scheme of the present invention is following:
Lower hybrid wave power control system in the tokamak experiment; Include a plurality of high-power klystrons; It is characterized in that: the output terminal of said each high-power klystron is equipped with directional coupler; The incident power that said directional coupler is coupled out is sent into wave detector through block isolating device after straight filtering; The detecting circuit that said wave detector output terminal comes out is sent into amplifier; The amplifying voltage of said amplifier output is converted by analog input module collection, A/D modular converter into digital signal, power control slave computer are handled, the D/A modular converter converts simulating signal into, analog output module output, and the output terminal of said analog output module inserts the PIN electrically controlled attenuator of microwave prime, and said power control slave computer is controlled host computer with power and is connected; Between said amplifier and the analog input module, be separately installed with an isolator between analog output module and the PIN electrically controlled attenuator.
Lower hybrid wave power control system in the described tokamak experiment, it is characterized in that: the number of said high-power klystron is 24.
Lower hybrid wave power control system in the experiment of described tokamak is characterized in that: said power control slave computer is the cRIO system, has the network interface that communicates with power control host computer in the said cRIO system.
Lower hybrid wave power control system in the described tokamak experiment, it is characterized in that: the output voltage of said wave detector, amplifier is 1-5V.
Principle of work of the present invention: the present invention is through the prior setpoint power output of power control host computer; Control slave computer through network delivery to power, directional coupler is arranged, directional coupler a small amount of microwave that is coupled out at the klystron delivery outlet; Convert voltage signal into through detection then; Through amplifying, isolate, gathering, thereby sending power to, the power signal with the velocity modulation mouth of pipe that can be real-time controls slave computer, again according to the pid algorithm of power control slave computer; Confirm to measure the difference of power and setting power; Power control slave computer is through the PIN electrically controlled attenuator of analog output module output analog quantity control pre-amplifier, thereby the output power of controlled microwave prime makes the output power of klystron invariable.
Advantage of the present invention is:
(1) the stable output of realization lower hybrid wave power.Through obtaining the realtime power signal of klystron delivery outlet, power control slave computer calculates based on the PID of FPGA, and to the control of PIN electrically controlled attenuator, whole power control system can be realized other closed-loop control of 100us level, satisfies tokamak experiment demand.
(2) power control slave computer adopts the cRIO system, and this system has realized the combination of FPGA and microprocessor, both can realize the hardware based control of power accurately and reliably, has the dirigibility of microprocessor again.This system also has network interface and digital input and output modules, can the selection that realize the multiple power control mode of power control slave computer be set through host computer, also can realize the power control mode selection of hardware-level through digital input and output modules.
(3) the automatic judgement that realizes lower hybrid wave system protection state is controlled.Also have much other protection systems in the lower hybrid wave system.Such as high reflection protection, sparking protection, overcurrent protection, when these protections took place, the microwave backing system can be closed the regular hour, thereby turn-offed the output of klystron power, protected whole lower hybrid wave system.At this moment prime power power controlling control slave computer can in time judge whether to be in guard mode through the power signal and the status signal of klystron delivery outlet.When being in guard mode, transfer to guarantee that through adjusting electricity prime power is minimum value when recovering output, thus the safety when guaranteeing the output of system recovery power.When system recovery is exported, replacement pid parameter and time, after the output of assurance system recovery, can realize original performance number of setting fast.According to the situation of various experiments, power control program of lower computer can be controlled the power of lower hybrid wave automatically like this.
(4) realize the automatic control of lower hybrid wave system under the special discharge mode of tokamak.The tokamak experiment needs the lower hybrid wave system can realize the special power way of outputs such as power modulation or alternating current discharge sometimes.This moment, comparatively frequent change can take place in the power of klystron.The present invention in this case; Can realize the fast and stable of power through replacement pid parameter and time; Can be through setting; Be implemented in the power output of interior gradual change of certain output power range or great-jump-forward, satisfy the needs of Physical Experiment. and can be that zero time length judges whether the tokamak discharge finishes through gathering power.
(5) all amplifier output voltages in the native system are 1-5V, thereby can judge whether amplifier work is normal.Various trigger pips and status signal all adopt low level effective, can realize the quick discovery of the system failure equally, have overcome the shortcoming of system in the past.
(6) native system also has match output services pattern.Because the CPI klystron has repeatable preferably, system is provided with this mode of operation.According to klystron under specific magnetic fields electric current, filament current state; Relation between output power, high pressure, the prime power input can be carried out data fitting; Thereby can realize power output comparatively accurately, and can improve the security and the reliability of power control system.
(7) native system adopts the safety ground mode, has abandoned the suspension working method in the system in the past.Can fundamentally overcome in the past in the system, because the device failure that the system failure or protection cause, improve the reliability of system.
Description of drawings
Fig. 1 is a single-path system structural representation of the present invention.
Fig. 2 is a power control slave computer processing flow chart of the present invention.
Embodiment
On China first on-circular cross-section superconducting Tokamak experimental provision EAST, realized the lower hybrid wave power control system that the present invention proposes.
Lower hybrid wave power control system in the tokamak experiment; Include the high-power klystron (general power 6MW) of 24 4.6GHz, send into the tokamak experimental provision through microwave transmission line, antenna from the microwave power that the high-power klystron (general power 6MW) of 24 4.6GHz is exported; For measuring microwave power signal; At 24 road high-power klystron output ports directional coupler 1 has been installed respectively; The incident power that said directional coupler 1 is coupled out is sent into wave detector 3 through block isolating device 2, wave filter after straight, filtering; (0 ~ 100mV) sends into amplifier 4 to the detecting circuit that said wave detector 3 output terminals come out; Amplifying voltage (1 ~ the 5V of said amplifier 4 outputs; Corresponding power 0 ~ 250KW) by analog input module 5 gather, the A/D modular converter converts digital signal into, power control slave computer 6 is handled, the D/A modular converter converts simulating signal into, analog output module 7 outputs, the output terminal of said analog output module 7 inserts the PIN electrically controlled attenuator 8 of microwave prime; Between said amplifier 4 and the analog input module 5, be separately installed with an isolator 9 between analog output module 7 and the PIN electrically controlled attenuator 8; Power control host computer 10 can be controlled slave computer 9 with power and communicate by letter, and realizes the transmission of control signal, status signal and image data.
Lower hybrid wave power controlling control slave computer is exported the output power that 24 tunnel simulating signals control respectively each sub-road of lower hybrid wave prime through analog output module.When analog output module output was maximum, prime power output power was the minimum value of adjustable extent; Otherwise be maximal value.
The lower hybrid wave control program is output as maximal value with analog output module when receiving the ready signal of lower hybrid wave system, make microwave prime power output minimum value; And the wait trigger pip, programmed acquisition klystron output power data are started working in setting according to power control host computer parameter when trigger pip arrives; And carry out PID and calculate; Judge the size of gathering power simultaneously, judge whether to have taken place protection, and then export the lower hybrid wave power of setting as required.
Claims (4)
1. lower hybrid wave power control system during a tokamak is tested; Include a plurality of high-power klystrons; It is characterized in that: the output terminal of said each high-power klystron is equipped with directional coupler; The incident power that said directional coupler is coupled out is sent into wave detector through block isolating device after straight filtering; The detecting circuit that said wave detector output terminal comes out is sent into amplifier; The amplifying voltage of said amplifier output is converted by analog input module collection, A/D modular converter into digital signal, power control slave computer are handled, the D/A modular converter converts simulating signal into, analog output module output, and the output terminal of said analog output module inserts the PIN electrically controlled attenuator of microwave prime, and said power control slave computer is controlled host computer with power and is connected; Between said amplifier and the analog input module, be separately installed with an isolator between analog output module and the PIN electrically controlled attenuator.
2. lower hybrid wave power control system in the tokamak experiment according to claim 1, it is characterized in that: the number of said high-power klystron is 24.
3. lower hybrid wave power control system in the tokamak according to claim 1 experiment is characterized in that: said power control slave computer is the cRIO system, has the network interface that communicates with power control host computer in the said cRIO system.
4. lower hybrid wave power control system in the tokamak experiment according to claim 1, it is characterized in that: the output voltage of said wave detector, amplifier is 1-5V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110388026.4A CN102520682B (en) | 2011-11-30 | 2011-11-30 | Lower hybrid wave power control system |
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| CN201110388026.4A CN102520682B (en) | 2011-11-30 | 2011-11-30 | Lower hybrid wave power control system |
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| CN102520682A true CN102520682A (en) | 2012-06-27 |
| CN102520682B CN102520682B (en) | 2015-09-09 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065691A (en) * | 2012-12-25 | 2013-04-24 | 中国科学院等离子体物理研究所 | Feedback control system of low clutter power |
| CN103596408A (en) * | 2013-10-17 | 2014-02-19 | 中国科学院等离子体物理研究所 | Microwave front-end system of klystron |
| CN103730878A (en) * | 2013-12-24 | 2014-04-16 | 中国科学院等离子体物理研究所 | 4.6GHz high-power continuous wave system protection method |
| 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 |
| CN106055732A (en) * | 2016-05-03 | 2016-10-26 | 中国科学院等离子体物理研究所 | Design method for pre-stage solid-state microwave source of low-hybrid wave 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 |
| CN107329516A (en) * | 2017-05-18 | 2017-11-07 | 中国科学院合肥物质科学研究院 | EAST tokamak stable state high power lower hybrid wave power modulation means |
| 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 |
| CN113890639A (en) * | 2021-11-11 | 2022-01-04 | 中国电子科技集团公司第二十九研究所 | Device and method for detecting power of radiation unit |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065691A (en) * | 2012-12-25 | 2013-04-24 | 中国科学院等离子体物理研究所 | Feedback control system of low clutter power |
| CN103596408A (en) * | 2013-10-17 | 2014-02-19 | 中国科学院等离子体物理研究所 | Microwave front-end system of klystron |
| CN103596408B (en) * | 2013-10-17 | 2016-08-24 | 中国科学院等离子体物理研究所 | The microwave backing system of klystron |
| CN103730878A (en) * | 2013-12-24 | 2014-04-16 | 中国科学院等离子体物理研究所 | 4.6GHz high-power continuous wave system protection method |
| 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 |
| CN106055732A (en) * | 2016-05-03 | 2016-10-26 | 中国科学院等离子体物理研究所 | Design method for pre-stage solid-state microwave source of low-hybrid wave system |
| CN105931937B (en) * | 2016-05-03 | 2018-09-04 | 中国科学院等离子体物理研究所 | A kind of calculating output method of 6MW 4.6GHz Lower Hybrid general powers |
| 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 |
| CN107329516A (en) * | 2017-05-18 | 2017-11-07 | 中国科学院合肥物质科学研究院 | EAST tokamak stable state high power lower hybrid wave power modulation means |
| 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 |
| CN113890639A (en) * | 2021-11-11 | 2022-01-04 | 中国电子科技集团公司第二十九研究所 | Device and method for detecting power of radiation unit |
| CN113890639B (en) * | 2021-11-11 | 2023-03-14 | 中国电子科技集团公司第二十九研究所 | Device and method for detecting power of radiation unit |
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| CN102520682B (en) | 2015-09-09 |
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