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Energies 2018, 11(11), 3057; https://doi.org/10.3390/en11113057

Pulse-Current Sources for Plasma Accelerators

1
Joint Institute for High Temperatures of the Russian Academy of Sciences (JIHT RAS), 125412 Moscow, Russia
2
State Research Center of the Troitsk Institute for Innovation & Fusion Research (SRC RF TRINITI), 142190 Moscow, Russia
*
Author to whom correspondence should be addressed.
Received: 21 September 2018 / Revised: 31 October 2018 / Accepted: 1 November 2018 / Published: 7 November 2018
(This article belongs to the Special Issue Control and Nonlinear Dynamics on Energy Conversion Systems)
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Abstract

The pulse source for plasma-accelerators supply operates under the conditions of nonlinear growth of load inductance, which complicates the matching of the source and the load. This article presents experimental studies of the use of both traditional pulse-energy sources based on capacitive storage and alternative ones based on explosive magnetic generators (EMG). It is shown that the EMG with the special device of the current-pulse formation more effectively matches with such a plasma load as the pulse plasma-accelerator (PPA). This device allows a wide range to manage the current-pulse formation in a variable load and, consequently, to optimize the operation of the power source for the specific plasma load. A mathematical model describing the principle of operation of this device in EMG on inductive load was developed. The key adjustable parameters are the current into the load, the residual inductance of the EMG, and the sample time of the specified inductance and the final current in the load. The device was successfully tested in experiments with the operation on both one and two accelerators connected in parallel. In the experiments, the optimal mode of device operation was found in which the total energy inputted to a pair of accelerators in one pulse reached 0.55 MJ, and the maximum current reached about 3.5 MA. A comparison with the results of experiments performed with capacitive sources of the same level of stored energy is given. The experiments confirmed not only the principal possibility of using EMG with a special device of current-pulse formation for operation with plasma loads in the MJ energy range but also showed the advantages of its application with specific types of plasma load. View Full-Text
Keywords: explosion-magnetic generator; plasma accelerator; current-pulse formation explosion-magnetic generator; plasma accelerator; current-pulse formation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Shurupov, A.; Kozlov, A.; Shurupov, M.; Zavalova, V.; Zhitlukhin, A.; Bakhtin, V.; Umrikhin, N.; Es’kov, A. Pulse-Current Sources for Plasma Accelerators. Energies 2018, 11, 3057.

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