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An Alternative Voltage Ripple Control Strategy for the AGPS of the ITER Neutral Beam Injector

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Abstract

To construct a high power negative neutral beam injector, an ultra-high voltage power supply for acceleration grid is required. The acceleration grid power supply (AGPS) has been designed for ITER, based on neutral point clamped three phase three level inverter, step-up transformer and rectifier. The output voltage ripple is an important parameters for the AGPS, influencing the heating efficiency. This paper proposes an alternative voltage ripple control strategy. The new control strategy is illustrated and the design principles of the controller is discussed, based on the detail analyzing of operation processes and output characteristics of the AGPS circuit. Finally, simulations results are shown to verify the control system.

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Acknowledgments

This work is supported by the National ITER Project of China, Nos. 2013GB113003 and 2010GB108001.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China

    Ming Zhang, Xueliang Zhang, Linglong Xia, Shaoxiang Ma, Chuliang Wang, Ge Zhuang, Yuan Pan & Kexun Yu

  2. Electric Control Department, Zhejiang Electric Power Design Institute, Hangzhou, China

    Linglong Xia

Authors
  1. Ming Zhang
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  2. Xueliang Zhang
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  3. Linglong Xia
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  4. Shaoxiang Ma
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  5. Chuliang Wang
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  6. Ge Zhuang
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  7. Yuan Pan
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  8. Kexun Yu
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Correspondence to Shaoxiang Ma.

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Zhang, M., Zhang, X., Xia, L. et al. An Alternative Voltage Ripple Control Strategy for the AGPS of the ITER Neutral Beam Injector. J Fusion Energ 34, 1497–1503 (2015). https://doi.org/10.1007/s10894-015-9984-6

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  • DOI: https://doi.org/10.1007/s10894-015-9984-6

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