This paper deals with the off-line optimization of poloidal field coil currents and voltages to obtain desired plasma scenarios including ramp up, flat top, and ramp down phases. The open loop control problem is solved via a quadratic optimization technique which requires the solution of a certain number of nonlinear plasma equilibrium problems. An alternative approach is based on the use of linearized models. This approach may fail during shape transitions where the effect of control on shape presents significant variations (e.g. limiter-diverted transition or plasma wobbling across a double null equilibrium configuration). To face these situations a novel methodology based on the SVD (Singular Value Decomposition) is proposed, which also opens the way to a linear closed loop control of plasma shape during limiter-diverted configuration transitions. The proposed methodologies are applied to ITER scenarios. © 2006 IEEE.
|Publication status||Published - 2006|
|Event||45th IEEE Conference on Decision and Control 2006, CDC - , United States|
Duration: 1 Jan 2006 → …
|Conference||45th IEEE Conference on Decision and Control 2006, CDC|
|Period||1/1/06 → …|
All Science Journal Classification (ASJC) codes
- Chemical Health and Safety
- Control and Systems Engineering
- Safety, Risk, Reliability and Quality
Mattei, M., Albanese, R., Ambrosino, G., & Portone, A. (2006). Open loop control strategies for plasma scenarios: Linear and nonlinear techniques for configuration transitions. Paper presented at 45th IEEE Conference on Decision and Control 2006, CDC, United States.