Development of effective power supply using electric double layer capacitor for static magnetic field coils in fusion plasma experiments

Inomoto, M.; Abe, K.; Yamada, T.; Kuwahata, A.; Kamio, S.; Cao, Q. H.; Sakumura, M.; Suzuki, N.; Watanabe, T.; Ono, Y.
February 2011
Review of Scientific Instruments;Feb2011, Vol. 82 Issue 2, p023502
Academic Journal
A cost-effective power supply for static magnetic field coils used in fusion plasma experiments has been developed by application of an electric double layer capacitor (EDLC). A prototype EDLC power supply system was constructed in the form of a series LCR circuit. Coil current of 100 A with flat-top longer than 1 s was successfully supplied to an equilibrium field coil of a fusion plasma experimental apparatus by a single EDLC module with capacitance of 30 F. The present EDLC power supply has revealed sufficient performance for plasma confinement experiments whose discharge duration times are an order of several seconds.


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