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Journal of Applied Mechanics and Technical Physics

2018 year, number 3

Cascade Magnetocumulative Generator on the Basis of Inductively Coupled Circuits with a Variable Coupling Coefficient

S. D. Gilev, V. S. Prokop'ev
Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia, 630090
Keywords: magnetocumulative generator, cascade systems, generation of electromagnetic energy, magnetic cumulation, inductively coupled circuits, generator-load correlation

Abstract

A circuit of a multicascade magnetocumulative generator based on a dynamic variation of the coupling coefficient of inductively coupled circuit is proposed. Each cascade contains two circuits including two pairs of inductively coupled coils. One pair of coils is subjected to simultaneous straining, and one of the coils in the other pair is arranged with the back-to-back connection. It is shown that the energy in the load can be gradually increased (from one cascade to another) by using additional cascades. By an example of a two-cascade system, the proposed circuit is compared to the known circuits of cascade system design based on the magnetic cumulation principle (generator with a step-up transformer and dynamic transformer). Within the framework of the model that ignores the ohmic resistance of conductors, it is demonstrated that the proposed circuit allows one to obtain a greater energy in the high-inductance load than the circuits with the step-up or dynamic transformer owing to a change in the sign of the magnetic flux in the secondary circuit. It is found that the increase in energy in the new circuit is independent of the coupling coefficient (at high values of this coefficient) and become greater as the number of cascades is increased.