|Published (Last):||5 May 2009|
|PDF File Size:||5.55 Mb|
|ePub File Size:||15.49 Mb|
|Price:||Free* [*Free Regsitration Required]|
From Wikipedia, the free encyclopedia. At the start of the s, the need for very short and powerful electrical pulses became evident to Soviet scientists conducting nuclear fusion research. They are frequently used as the first stage of a multi-stage generator, with the exit current used to generate a very intense magnetic field in a second generator. An explosively pumped flux compression generator EPFCG is a device used to generate a high-power electromagnetic pulse by compressing magnetic flux using high explosive.
Explosively pumped flux compression generators are used to create ultrahigh magnetic fields in physics and materials science research  and extremely intense pulses of electric current for pulsed power applications.
They are being investigated as power sources for electronic warfare devices known as transient electromagnetic devices that generate an electromagnetic pulse without the costs, side effects, or enormous range of a nuclear electromagnetic pulse device. The magnetic flux threading the ring, represented by five field lines, is reduced by the same ratio as the area of the ring. Explosively pumped flux compression generator In the spring ofR.
This page was last edited on 28 Novemberat An external magnetic field blue lines threads a closed ring made of a perfect conductor with zero resistance. The purpose of the flux generator can be either the generation of an extremely strong magnetic field pulse, or an extremely strong magnetocumulativw current pulse; in the latter case the closed conductor is attached to an external electric circuit.
Such generators can, if necessary, be utilised independently, or even assembled in a chain of successive stages: Views Read Edit View history. International Journal of Quantum Chemistry. Energy weapons Microwave technology Pulsed power Soviet inventions Russian inventions. The prohibitive cost of the capacitors required to obtain the desired power motivated the search for a more economical device.
Uspekhi Fizicheskikh Nauk in Russian. There was a problem providing the content you requested Chvileva undertook the first experiment with this type of generator, with the goal of obtaining a very high magnetic field. The nine field lines represent the magnetic flux threading the ring.
The practical realization of gennerators performance MK-2 systems required the pursuit of fundamental studies by a large team of researchers; this was effectively achieved byfollowing the production of the first MK-2 generator inand the achievement of currents over megaamperes from The first magneto-explosive generators, which followed from the ideas of Andrei Sakharovwere designed to fill this role. Suppose the ring is deformed, magnetocumulatjve its cross-sectional area.
In magneto-explosive generators, magnetocujulative reduction in area is accomplished by detonating explosives packed around a conductive tube or disk, so the resulting implosion compresses the tube or disk.
Explosively pumped flux compression generator — Wikipedia For this reason, reducing the area of the surface enclosed by a closed loop conductor with a magnetic field passing through it, which would reduce the magnetic flux, results in the induction of current in the electrical conductor, which tends to keep the enclosed flux at its original value.
The technique is made possible when the time scales over which the device operates are sufficiently brief that resistive current loss is negligible, and the magnetic flux through any surface surrounded by a conductor copper wire, for example gnerators constant, even though the size and shape of the surface may change. Maxwell; Goforth, James; Ekdahl, Carl The Marx generatorwhich stores energy in capacitors, was the only device capable at the time of producing such high power pulses.
Helical magneto-cumulative generator 280 mm in diameter
Download eBook Less expensive, lighter, and smaller than its electromechanical counterparts, power electronics lie at the very heart of controlling and converting electric energy, which in turn lies at the heart of making that energy useful. From household appliances to space-faring vehicles, the applications of power electronics are virtually limitless. Until now, however, the same could not be said for access to up-to-date reference books devoted to power electronics. Written by engineers for engineers, The Power Electronics Handbook covers the full range of relevant topics, from basic principles to cutting-edge applications. Compiled from contributions by an international panel of experts and full of illustrations, this is not a theoretical tome, but a practical and enlightening presentation of the usefulness and variety of technologies that encompass the field. For modern and emerging applications, power electronic devices and systems must be small, efficient, lightweight, controllable, reliable, and economical.
Patent Pettibone, J S; Wheeler, P C An improved magnetocumulative generator is described that is useful for producing magnetic fields of very high energy content over large spatial volumes. The polar directed pleated magnetocumulative generator has a housing providing a housing chamber with an electrical conducting surface. The chamber forms a coaxial system having a small radius portion and a large radius portion. When a magnetic field is injected into the chamber, from an external source, most of the magnetic flux associated therewith positions itself in the small radius portion. The energy content of the magnetic field is greatly increased by flux stretching as well as by flux compression. The energy enhanced magnetic field is utilized within the housing chamber itself. The polar directed pleated magnetocumulative generator has a housing providing a housing chamber with an electrically conducting surface.