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Method for controlling TOKMAK discharge low noise wave power mode

A control method and power mode technology, applied in the direction of electrical program control, computer control, general control system, etc., can solve the problems that cannot meet the requirements, cannot determine the termination time of wave power, cannot realize fast shutdown and fast protection, etc., and achieve Reliable technical guarantee to achieve rapid shutdown and protection effects

Inactive Publication Date: 2007-03-07
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Can not meet the current requirements of various physical experiments
For example, TOKMAK AC discharge operation mode, plasma current I P It will be AC ​​mode; the low clutter power will be different from the normal one-way plasma high current mode, but the I P During the zero-crossing period (-50ms) or the whole AC wave; and when the AC discharge can no longer be based on I P guard signal to determine the termination time of the wave power
[0005] In addition, in the current normal mode, the power control by the high-voltage source can only realize the change of ms level, and cannot realize the requirements of fast shutdown and fast protection

Method used

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  • Method for controlling TOKMAK discharge low noise wave power mode
  • Method for controlling TOKMAK discharge low noise wave power mode
  • Method for controlling TOKMAK discharge low noise wave power mode

Examples

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Embodiment Construction

[0018] On the first superconducting TOKAMAK device HT-7 in my country, the low-clutter power mode control system proposed by the present invention is realized.

[0019] The microwave power output from 12 high-power klystrons (total power 1.2MW) is sent to TOKAMAK through microwave transmission lines (waveguides). To measure the microwave power signal, we installed a microwave directional coupler on each of the 12 transmission lines. The incident power and reflected power microwave signals coupled by the 12-channel directional couplers are DC-blocked and filtered, and then sent to the detector. The detection output voltage is 0-100mV. The detection voltage is sent to the amplifier circuit, and the amplified output voltage is 0-4V (corresponding to a power of 0-100KW). 12 incident and 12 reflected signals, plasma current (Ip) signal, transformer flux consumption (Def) signal and trigger signal for low clutter system of HT-7 master control room are sent to the AD card of industr...

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Abstract

This invention discloses one TOKMAK discharging clutter power mode control method, which controls low clutter front degree of power through computer to control klystron output to realize needed microwave power mode. The incidence power and reflection power microwave signal and plasma current signal Ip and transducer flux consumption signals Def control the output level of Do according to needs of control modes to control DC blocking drive circuit and to control each sub circuit PIN switch to realize clutter power output in different modes.

Description

technical field [0001] The invention belongs to the field of nuclear technology, in particular to a control technology for a low-clutter power mode on a nuclear fusion device according to experimental requirements. Background technique [0002] Low clutter is one of the important means of current driving and heating in nuclear fusion experiments. A low-clutter system is generally a huge system consisting of multiple high-power klystrons. At present, the use of low clutter in domestic fusion devices is still a conventional mode: during a discharge process, the plasma current I P is unidirectional, low clutter power only according to the set pulse width T and I P Protection signal (I P The low-clutter power output is turned off when the current is lower than the set value) is controlled by the high-voltage source switch of the klystron. In this mode, the low clutter power is put into the plasma when the plasma current is high during the discharge period, and when the disch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21B1/00G05B19/02G05B15/02
CPCY02E30/10
Inventor 王茂单家芳
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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