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Design and implementation of power and phase feedback control system for ICRH on EAST

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Abstract

Ion cyclotron wave resonance heating (ICRH) is one of the most important auxiliary methods to heat plasma in the Experimental Advanced Superconducting Tokamak (EAST). Several megawatts of power is transmitted through separate coaxial lines and coupled with the plasma through arrays of loop antennas. The parameters of the ICRH system, including the injected power and phasing between antenna straps, are critical to the coupling efficiency of the power as well as the resulting impact on the heating efficiency. In this paper, we present a system for feedback control of the phase between the current straps and the ICRH power on EAST. The feedback control system was tested using both a matched dummy load and a plasma load, and it successfully maintained stable operation in the 2016 EAST campaign. Good control of the injected power and wave phases was achieved during edge-localized mode operation.

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References

  1. Y.X. Wan, P.D. Weng, J.G. Li et al., Progress of the EAST Project in China, in the 21st International Atomic Energy Agency (IAEA) Fusion Energy Conference (Oral). Chengdu, China, Oct. 16–21 (2004)

  2. A. Messiaen, R. Koch, R.R. Weynants et al., Performance of the ITER ICRH system as expected from TOPICA and ANTITER II modelling. Nucl. Fusion 50, 02502 (2010). https://doi.org/10.1088/0029-5515/50/2/025026

    Article  Google Scholar 

  3. R.H. Goulding, D.J. Hoffman, P.M. Ryan et al., A power compensation system for phased operation of the JET A2 antenna arrays, in the 17th Symposium on Fusion Technology. Rome, Italy, Sep. 14–18 (1992)

  4. R.H. Goulding, F.W. Baity, D.J. Hoffman et al., Design and control of phased ICRH antenna arrays, in Symposium on fusion engineering. MA, United States, Oct. 11–15 (1993)

  5. Chen Gen, Qin Chengming, Mao Yuzhou et al., Power compensation for ICRF heating in EAST. Plasma Sci. Technol. 18, 870–874 (2016). https://doi.org/10.1088/1009-0630/18/8/14

    Article  Google Scholar 

  6. He Zhongxin, Zhang Xinjun, Zhao Yanping, Results of ICRF heating experiments from the EAST 2010 campaign. Plasma Sci. Technol. 17, 188–190 (2015). https://doi.org/10.1088/1009-0630/17/3/03

    Article  Google Scholar 

  7. Y. Yang, J. Shan, D. Wang et al., The design of LHCD phase control system based on QNX operating system, in Paper presented at the 4th International Conference on Computational Intelligence and Software Engineering, Wuhan, China, Dec. 11–13 (2009)

  8. Wikipedia QNX (2017), https://en.wikipedia.org/wiki/QNX. Accessed 27 Feb 2017

  9. Yuzhou Mao, Shuai Yuan, Yanping Zhao et al., High power RF transmitters for ICRF applications on EAST. Plasma Sci. Technol. 15(3), 261–265 (2013). https://doi.org/10.1088/1009-0630/15/3/14

    Article  Google Scholar 

  10. J. Ira, Pitel, measuring peak-to-peak output voltage: magna-power electronics shares its method. IEEE Trans. Power Electron. 1(2), 18–19 (2014). https://doi.org/10.1109/MPEL.2014.2312276

    Google Scholar 

  11. Wikipedia, Amplitude (2017), https://en.wikipedia.org/wiki/Amplitude. Accessed 11 Feb 2017

  12. R. Ochoukov, V. Bobkov, H. Faugel et al., A new B-dot probe-based diagnostic for amplitude, polarization, and wavenumber measurements of ion cyclotron range-of frequency fields on ASDEX upgrade. Rev. Sci. Instrum. 86, 115112 (2015). https://doi.org/10.1063/1.4935833

    Article  Google Scholar 

  13. L. Yue, L. Dong, The cable phase difference detection of very high frequency (VHF) antenna array based on AD8302, in Paper Presented at the 3rd International Conference on Information Science and Control Engineering, Beijing, China, Jul. 08–10 (2016)

  14. Analog Devices, LF-2.7 GHz RF/IF Gain and Phase Detector, http://www.analog.com/media/cn/technical-documentation/data-sheets/AD8302.pdf. Accessed 2 Mar 2017

  15. Texas Instruments, 8-Channel, 12-Bit, 40MSPS ADC with Serial LVDS Interface, http://datasheet.octopart.com/ADS5270IPFP-Texas-Instruments-datasheet-142677.pdf. Accessed 28 Feb 2017

  16. S.G. Castillo, K.B. Ozanyan, Field-programmable data acquisition and processing channel for optical tomography systems. Rev. Sci. Instrum. 76, 095109 (2005). https://doi.org/10.1109/TNS.2016.2610142

    Article  Google Scholar 

  17. Chun-Fei Hsu, Bore-Kuen Lee, FPGA-based adaptive PID control of a DC motor driver via sliding-mode approach. Expert Syst. Appl. 38, 11866–11872 (2011). https://doi.org/10.1016/j.eswa.2011.02.185

    Article  Google Scholar 

  18. J. Zhao, M. Lu, J. Deng, Foundations of Radio Frequency Circuits, 2nd edn. (Xi’an, Shanxi, 2010), pp. 211–216 (in Chinese)

  19. Wikipedia, Transmission line (2017), https://en.wikipedia.org/wiki/Transmission_line. Accessed 9 Feb 2017

  20. B.S. Guru, H.R. Hızıroğlu, Electromagnetic Field Theory Fundamentals, 2nd edn. (University of Cambridge, Cambridge, 2004), pp. 422–423

    Book  Google Scholar 

  21. Chunqi Qian, William W. Brey, Impedance matching with an adjustable segmented transmission line. J. Magn. Reson. 199, 104–110 (2009). https://doi.org/10.1016/j.jmr.2009.04.005

    Article  Google Scholar 

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Authors and Affiliations

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China

    Zhao Chen, Yan-Ping Zhao, Gen Chen, Yan Cheng, Jian-Hua Wang, Jia-Hui Zhang & Yu-Qing Yang

  2. University of Science and Technology of China, Hefei, 230027, China

    Zhao Chen, Jian-Hua Wang, Jia-Hui Zhang & Yu-Qing Yang

Authors
  1. Zhao Chen
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  2. Yan-Ping Zhao
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  3. Gen Chen
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  4. Yan Cheng
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  5. Jian-Hua Wang
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  6. Jia-Hui Zhang
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  7. Yu-Qing Yang
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Corresponding author

Correspondence to Zhao Chen.

Additional information

This work was supported in part by the National Magnetic Confinement Fusion Science Program (No. 2015GB101001) and the National Natural Science Foundation of China (Nos. 11375236 and 11375235).

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Chen, Z., Zhao, YP., Chen, G. et al. Design and implementation of power and phase feedback control system for ICRH on EAST. NUCL SCI TECH 29, 19 (2018). https://doi.org/10.1007/s41365-018-0362-8

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  • DOI: https://doi.org/10.1007/s41365-018-0362-8

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