One-Dimensional Burn Control in Fusion Reactors
Division of Plasma Physics (DPP) Annual Meeting of the American Physical Society (APS)
Chicago, Illinois, November 8-12, 2010
| Abstract |
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Control of plasma density and temperature magnitudes, as well as their
profiles, are among the most fundamental problems in fusion reactors.
Economic and technological constraints may require fusion reactors to
operate at operating points for which an active control system may be
necessary to stabilize the thermonuclear reaction. In [1], a
zero-dimensional (0-D) nonlinear model involving approximate
conservation equations for the energy and the density of ion species
was used to synthesize a nonlinear feedback controller for stabilizing
the burn condition of a fusion reactor. This result is exploited in
this work to propose a controller that is able to stabilize the
one-dimensional (1-D) burn dynamics. A simulation study is carried out
to assess the performance of the con- troller and its effect on the
plasma density and temperature profiles. The long-term goal is to
develop model-based controllers for simultaneous kinetic profile
regulation and burn condition control.
[1] E. Schuster, M. Krstic and G. Tynan, “Burn control in fusion
reactors via nonlinear stabilization techniques,” Fusion Science and
Technology, vol. 43, no. 1, pp. 18-37, January 2003.