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Comparison of strategies and regulator design for active control of MHD modes
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2005 (English)In: Fusion engineering and design, ISSN 0920-3796, E-ISSN 1873-7196, Vol. 74, no 1-4, 549-553 p.Article in journal (Refereed) Published
Abstract [en]

A system of evenly spaced poloidal arrays of saddle coils was recently installed on the reversed field pinch device EXTRAP T2R to perform experiments on the active control of MHD modes. The implementation of different control strategies, such as "intelligent shell" and "mode control", was made possible by a flexible digital control system. After giving some results on the performances of the innermost coil current control loop, two versions of "mode control" recently tested on the machine are presented. In the "wise shell" approach, equilibrium related modes are ruled out and a systematic increase of the pulse length is obtained. In a second, more model based, approach, a mode estimator/controller is designed aiming at a full state feedback by including modes, which are not directly measurable due to the limited number of available real-time signals.

Place, publisher, year, edition, pages
2005. Vol. 74, no 1-4, 549-553 p.
Keyword [en]
MHD modes, active control, real time signals
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-42505DOI: 10.1016/j.fusengdes.2005.06.248ISI: 000233886800082Scopus ID: 2-s2.0-27844489643OAI: oai:DiVA.org:kth-42505DiVA: diva2:447487
Note
QC 20111012Available from: 2011-10-12 Created: 2011-10-11 Last updated: 2017-12-08Bibliographically approved

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Brunsell, Per

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