Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Plural load device systems
Patent
1976-09-07
1978-05-02
Engle, Samuel W.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Plural load device systems
3151114, G21B 100, H01J 724
Patent
active
040873226
ABSTRACT:
A poloidal magnetics system for a plasma producing device of toroidal configuration is provided that reduces both the total volt-seconds requirement and the magnitude of the field change at the toroidal field coils. The system utilizes an air core transformer wound between the toroidal field (TF) coils and the major axis outside the TF coils. Electric current in the primary windings of this transformer is distributed and the magnetic flux returned by air core windings wrapped outside the toroidal field coils. A shield winding that is closely coupled to the plasma carries a current equal and opposite to the plasma current. This winding provides the shielding function and in addition serves in a fashion similar to a driven conducting shell to provide the equilibrium vertical field for the plasma. The shield winding is in series with a power supply and a decoupling coil located outside the TF coil at the primary winding locations. The present invention requires much less energy than the usual air core transformer and is capable of substantially shielding the toroidal field coils from poloidal field flux.
REFERENCES:
patent: 3778343 (1973-12-01), Coppi et al.
UWFDM-129, Experimental Thermonuclear Installation, Tokamak T-20, vol. II part 1, pp. 18-25, 39, 43 (10/30/75).
Nuclear Technology, vol. 30, (9/76) pp. 261, 279-283, A Tokamak Experimental Power Reactor.
Cangialosi S. A.
Carlson Dean E.
Deckelmann Louis M.
Engle Samuel W.
Hamel Stephen D.
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