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.
Similar content being viewed by others
References
K. Watanabe, M. Kashiwagi, S. Kawashima et al., Development of a dc 1 MV power supply technology for NB injectors. Nucl. Fusion 46(6), S332 (2006)
K. Watanabe, M. Yamamoto, J. Takemoto et al., Design of a −1 MV dc UHV power supply for ITER NBI. Nucl. Fusion 49(5), 055022 (2009)
T. Ohga, K. Usui, K. Ohmori, et al., High voltage power supply of negative-ion based NBI for JT-60U. in 17th IEEE/NPSS Symposium on Proceedings of Fusion Engineering, 1997 (IEEE, San Diego, CA, USA, 1997) pp. 1091–1094
M. Hanada, N. Akino, Y. Endo et al., Development and design of the negative-ion-based NBI for JT-60 super advanced. J. Plasma Fusion Res. Ser. 9, 208 (2010)
V. Toigo, E. Gaio, F. Milani, Comparative analysis of two electric schemes for the ion source power supplies of the ITER neutral beam injector test bed. in Twenty-First IEEE/NPS Symposium on Proceedings of Fusion Engineering 2005 (IEEE, Knoxville, TN, USA, 2005) pp. 1–4
V. Toigo, L. Zanotto, M. Bigi et al., Progress of the ITER NBI acceleration grid power supply reference design. Fusion Eng. Des. 88(6), 956–959 (2013)
E. Gaio, V. Toigo, A. De Lorenzi et al., The alternative design concept for the ion source power supply of the ITER neutral beam injector. Fusion Eng. Des. 83(1), 21–29 (2008)
L. Zanotto, A. Ferro, V. Toigo, Assessment of performance of the acceleration grid power supply of the ITER neutral beam injector. Fusion Eng. Des. 84(7), 2037–2041 (2009)
C. Finotti, E. Gaio, V. Toigo, Study of active-front-end design for the acceleration grid power supply of iter neutral beam injector. in 2011 Twenty-Sixth Annual IEEE on Proceedings of Applied Power Electronics Conference and Exposition (APEC) (IEEE, Fort Worth, TX, USA, 2011) pp. 952–959
A. Ferro, L. Zanotto, V. Toigo, Control strategy for the Acceleration voltage of the ITER neutral beam injector. in 2011 IEEE/NPSS 24th Symposium on Proceedings of Fusion Engineering (SOFE) (IEEE, Chicago, IL, USA, 2011) pp. 1–5
A. Ferro, Study of the Power Supply System for the Acceleration Grids of the ITER Neutral Bean Injector (University of Padova, Padova, 2011)
Acknowledgments
This work is supported by the National ITER Project of China, Nos. 2013GB113003 and 2010GB108001.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
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
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10894-015-9984-6