ELECTRICAL PULSE GENERATOR WITH SUPERCONDUCTING MAGNET AND ROTARY PRIME MOVER.
ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
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Short steep pulses of high electrical energy are required to drive systems such as pulsed transmitters, light sources, and plasma discharges. A low impedance stationary coil will generate such pulses when the magnetic flux threading the coil undergoes large and rapid changes. The rapid change can be achieved by a flux displacer, a conductor driven at high speed past the stationary coil. The applied field is provided in the present work by a superconducting magnet in order to produce a magnetic flux of the necessary magnitude and density with small operating loss, bulk and weight. The stationary coil which is connected to the load, and the flux displacer, which need not be superconducting, were placed outside the dewar. Two series of experiments with flux displacers driven by a rotary prime mover are discussed. The first series used relatively small, isolated specimens. These experiments served to determine the effect of displacer shape, speed and conductivity on output. The second series used relatively large displacers formed by pairs of cylindrical shell segments which were electrically and mechanically connected by end plates. These experiments give information on the influence of various system parameters on the energy, and on the duration and shape of the pulses. The results are presented in dimensionless form, so that the performance of high energy systems can be predicted. The rotary prime mover may be a lightweight explosive drive or gas turbine, or, in a vehicle or aircraft, one of the propulsion engines. Author
- Test Facilities, Equipment and Methods
- Electricity and Magnetism