Inductive Charging of Pulse Lines on 0.1 to 1.0 MJ Range Using Foil Fuses Staged with Explosively Actuated Switches.
NAVAL RESEARCH LAB WASHINGTON D C
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The use of inductive storage techniques to replace the conventional high voltage sources, such as Marx generators, for the charging of high voltage transmission line pulse generators i.e., capacitive loads is discussed. The proposed opening switch system consists of exploding foil fuses staged with high explosive actuated switches. The low resistance of the explosive switches in the closed stage allows the inductive store to be charged at relatively slow rates without significant energy loss. Upon opening, current is commutated to the foils which rapidly explode to generate the inductive voltage necessary to charge the load. A detailed analysis of fuse performance in the basic inductive storage circuit is presented using emperically obtained data on the resistivity vs. dissipated energy characteristic of vaporized aluminum foils. The results are used to outline the design of inductive storage systems for pulse charging capacitors to 1 MV at energies from 100 to 1000 kJ, with risetimes of 2 to 10 microsec 10 to the 11th power to 10 to the 12th power W rate and efficiencies of 20 to 65. Author
- Electricity and Magnetism