Advertisement

Reversible Energy Transfer between Inductances

  • S. L. Wipf

Abstract

Repeatedly-pulsed magnetic fields of the order of 10 GJ with rise times of 10 ms, as they would be used in a theta-pinch fusion reactor, need energy storage and transfer devices of high efficiency. Inductive storage would be favourable but needs a suitable transfer system. The transfer device must be capable of storing about half the total energy during transfer. Two possibilities are suggested, both using kinetic energy as interim storage. One is a homopolar machine, in lieu of a capacitor, and operates with liquid metal as the only movable medium. The other is switchless and works on the principle of a single phase alternator; during transfer the rotor performs half a rotation between two unstable equilibrium positions. The feasibility of the liquid metal transfer system will depend on the results of research into the losses; the other system has worked on a small scale in a fully superconducting device.

Keywords

Liquid Metal Hartmann Number Flux Linkage Resistive Loss Transfer Element 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. A. Krakowski, F. L. Ribe, T. A. Coultas and A.J.Hatch,“An Engineering Design Study of a Reference Theta-Pinch Reactor ” Los Alamos Scientific Laboratory Report LA-5336, March 1974, 137 pp.Google Scholar
  2. 2.
    S.L.Wipf,“Supraleitende Energiespeicher” Max-Planck-Institut für Plasmaphysik, Garching, Report IPP•2/211, Feb. 1973. NASA Tech. Transl. F-15109, Report N73–31676, Sept. 1973, 43 pp.Google Scholar
  3. 3.
    F. Winterberg,“The Possibility of Producing a Dense Thermonuclear Plasma by an Intense Field Emission Discharge” Phys. Rev. 174, 212–220 (1968).CrossRefGoogle Scholar
  4. 4.
    E. Simon and G. Bronner, “An Inductive Energy Storage System using Ignitron Switching”, IEEE Trans. NS-14, 33–40 (1967)CrossRefGoogle Scholar
  5. 5.
    H.A.Peterson, N.Mohan, W.C.Young, R.W. Boom,“Superconductive Inductor-Converter Units for Pulsed Power Loads”, These ProceedingsGoogle Scholar
  6. 6.
    E.P.Dick, C.H.Dustmann, A.Ulbricht, “Inductive Energy Transfer using a Flying Capacitor”, ibid.Google Scholar
  7. 7.
    For a more comprehensive discussion, see the review paper by 0. Zucker and W. Bostick, ibid.Google Scholar
  8. 8.
    K.I.Thomassen,“An Inductive Energy Storage System with Capacitive or Homopolar Transfer”, Proc. 5th Symp. on Engin. Problems of Fusion Res.,Princeton(1973), IEEE 73 CH 0843–3-NPS, pp. 444–446.Google Scholar
  9. 9.
    P. Kapitza,“Further Developments of the Method of Obtaining Strong Magnetic Fields”, Proc.Roy.Soc.(London) 115A, 658–683, (1927).CrossRefGoogle Scholar
  10. 10.
    G.Gauchon, P.H.Rebut, A.Torossian,“First Experiments on Synchronous Pulse Generators”, Report EUR-CEA-FC-485; 5th Symp. on Fusion Techn. Oxford, July 1968, 15 pp.Google Scholar
  11. 11.
    C.Rioux,“Experiment of Pulsating Unipolar Generator without Ferromagnetic Materials”, 4th Symp. Engin. Problems of Fusion Res., Frascati, 1966, 14 pp.Google Scholar
  12. 12.
    P.F. Smith and J.D.,“Superconducting Energy Transfer Systems”, Particle Accel. 1, 155–172 (1970).Google Scholar
  13. 13.
    K.I.Thomassen, “Reversible Magnetic-Energy Transfer and Storage Systems”, Technology of Controlled Thermonuclear Fusion etc., Austin, Tex., 1972, USAEC CONF-721111, pp. 208–225 (1974).Google Scholar

Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • S. L. Wipf
    • 1
  1. 1.Los Alamos Scientific LaboratoryUniversity of CaliforniaLos AlamosUSA

Personalised recommendations