Introduction to explosive magnetic flux compression generators

Fowler, C.M.; Caird, R.S.; Garn, W.B.

doi:10.2172/4218822

Cited by 29 publications

(7 citation statements)

References 3 publications

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“…The variation of inductance with time is plotted in Fig. 9, along with analytical solutions from [1]. Good agreement can be seen.…”

Section: Resultsmentioning

confidence: 67%

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Finite difference time domain algorithm for electromagnetic problems involving material movement

Sijoy

Chaturvedi

2009

Journal of Computational Physics

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“…The variation of inductance with time is plotted in Fig. 9, along with analytical solutions from [1]. Good agreement can be seen.…”

Section: Resultsmentioning

confidence: 67%

“…Magnetic flux compression systems [1] are in widespread use for generating megagauss magnetic fields for a variety of applications. Numerical simulations for such systems can involve complex geometries as well as multiple materials like conductors, dielectrics and plasma.…”

Section: Introductionmentioning

confidence: 99%

Finite difference time domain algorithm for electromagnetic problems involving material movement

Sijoy

Chaturvedi

2009

Journal of Computational Physics

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“…Most of them are experimental [12][13][14][15][16][17]. While, no methods are presented in literature to calculate the maximum inductance.…”

Section: Methods Of the Inductance Profile Calculationmentioning

confidence: 99%

Calculation and Measurement of Coil Inductance Profile in Tubular Linear Reluctance Motor and its Validation by Three Dimensional FEM

Mosallanejad¹,

Shoulaie²

2011

Journal of Electrical Engineering

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This paper reports a study of coil inductance profile in all positions of plunger in tubular linear reluctance motors (TLRMs) with open type magnetic circuits. In this paper, maximum inductance calculation methods in winding of tubular linear reluctance motors are described based on energy method. Furthermore, in order to calculate the maximum inductance, equivalent permeability is measured. Electromagnetic finite-element analysis for simulation and calculation of coil inductance in this motor is used. Simulation results of coil inductance calculation using 3-D FEM with coil current excitation is compared to theoretical and experimental results. The comparison yields a good agreement.K e y w o r d s: tubular linear reluctance motors, maximum inductance, inductance profile, FEM analyzes

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“…The bulk of linear generators development has involved explosively driven flux compressor [ 1,2,3]. In these systems explosive material is integrated directly into the structure.…”

Section: Introductionmentioning

confidence: 99%

Combustion driven pulsed linear generators for electric gun applications

Mongeau

1997

IEEE Trans. Magn.

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Energy storage and pulse forming forAnother consideration of pulse power sources which in the electromagnetic and electro-thermal chemical guns has author's opinion has been largely ignored and needs to be historically been accomplished through the use of complex considered from the onset is system cost. In order for a new power trains. Such power trains typical involve a prime power weapon system to be introduced in present economic conditions a viable acquisition and life cycle cost rationale source, electrical or mechanical power conversion devices, capacitive or flywheel energy storage devices, and sophisticated switching and control e,ements. Kaman Electromagnetics needs to be developed. This consideration is compounded by (KEC) has developed concepts for simpler pulse power systems the fact that in a pulse power where chemical energy is converted more directly into an system are specific to a weapon system and have little if any electrical output which can be utilized by an electric gun load commercial application which can help spread out without further conditioning. One family of devices which has development costs and increase unit quantities. An ideal shown considerable promise is the linear flux compressor. Early pulse power supply needs not only to meet the technical work with flux compressors used explosives and was suited only performance requirements but be economically viable as for microsecond duration pulses. More recent efforts utiIizing well. Many of the technical and operational limitations of the propellants and even conventional hydrocarbon fuels can provide millisecond duration pulses which are well suited for current pulse power systems can be traced to the approach of electric gun type loads. Internally funded efforts indicate linear flux compressor pulse power supplies can be considerable storing the energy Over a 10% period Of time prior to the smaller and lighter than conventional systems. This paper will actual shot. F k . 1 outlines some of the various Power present the operational principles and design issues of linear conditioning approaches used. Rotating machines, for flux compressors suitable for EM guns. Point designs, instance, use a large integral flywheel of some sort to store performance simulations and general scaling relationships will the energy. These flywheels are usually made of advanced also be presented.composites integrated with pulse electric windings. Rotating machines often require storing an energy several times that of the pulse itself. In addition the flywheel must be spinning at all times when the system needs to be ready to fire. The ability of a machine system to operate reliably in an moving or having silent watch capability is problematic. The issue of protecting the crew against machine failure may be the most difficult problem to Of the

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Introduction to explosive magnetic flux compression generators

Cited by 29 publications

References 3 publications

Finite difference time domain algorithm for electromagnetic problems involving material movement

Finite difference time domain algorithm for electromagnetic problems involving material movement

Calculation and Measurement of Coil Inductance Profile in Tubular Linear Reluctance Motor and its Validation by Three Dimensional FEM

Combustion driven pulsed linear generators for electric gun applications

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