http://www.cnr.it/ontology/cnr/individuo/prodotto/ID26098

Enhancement of the power supply systems in RFX-mod towards 2 MA plasma current (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Enhancement of the power supply systems in RFX-mod towards 2 MA plasma current (Articolo in rivista) (literal)

Anno

2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.fusengdes.2010.12.039 (literal)

Alternative label

Luca Novello; Andrea Zamengo; Alberto Ferro; Loris Zanotto; Marco Barp; Roberto Cavazzana; Claudio Finotti; Mauro Recchia; Elena Gaio (2011)
Enhancement of the power supply systems in RFX-mod towards 2 MA plasma current
in Fusion engineering and design; ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE (Svizzera)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Luca Novello; Andrea Zamengo; Alberto Ferro; Loris Zanotto; Marco Barp; Roberto Cavazzana; Claudio Finotti; Mauro Recchia; Elena Gaio (literal)

Pagina inizio

1393 (literal)

Pagina fine

1397 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

La rivista è pubblicata anche online con ISSN 1873-7196 (Editore: Elsevier Science SA) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.sciencedirect.com/science/article/pii/S0920379610005740 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

86 (literal)

Rivista

Fusion engineering and design (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

Issues 6-8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

5 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

6-8 (literal)

Note

Scopu (literal)
ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Consorzio RFX, Euratom-ENEA Association, Padova, Italy (literal)

Titolo

Enhancement of the power supply systems in RFX-mod towards 2 MA plasma current (literal)

Abstract

The recent start-up improvements brought to RFX-mod have allowed increasing the plasma current in the range 1.7-1.9 MA, but still they proved to be not sufficient to routinely and reliably reach higher values of plasma current that would be very useful for the present studies on enhanced confinement. The need for higher poloidal flux variation together with the overabundant available toroidal flux has led to the study of a rearrangement of the power supply system with the aim of increasing the first at the expenses of the latter. Thanks to the flexibility of the power supply system, composed of modular thyristor converters, the rearrangement has been easily obtained and the resulting enhanced poloidal flux capability scenario described in the paper allows a two step plasma current ramp-up. In order to increase as much as possible the plasma current up to the nominal value of 2 MA it is necessary to fully exploit the thyristor converter power capability, in particular in the first ramp-up phase. In the paper a detailed verification of their maximum performance is presented. The first results obtained after power supply reconfiguration are very good, with plasma current kept constant at about 2 MA for 100 ms. The enabled operation at very high plasma current requires also an optimization of the magneto hydro dynamics (MHD) mode coil power supplies that are required to provide higher current values. Therefore a dedicated study of their control system has been worked out, which allowed understanding how to increase as much as possible the output current without losing the dynamic performance, so keeping the efficiency in the control of dominant and secondary modes, which is essential to obtain good and reproducible discharges. (literal)

Editore