Superconducting inductive pulsed power supply for electromagnetic launchers: design aspects and experimental investigation of laboratory set-up

Weck, W.; Ehrhart, P.; Muller, A. Charles; Reiner, G.

doi:10.1109/20.560067

Cited by 23 publications

(6 citation statements)

References 4 publications

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“…First function tests of thyristors at low temperatures have been undertaken at the ISL [18], but need to be continued. A future system with integrated switches would rely on earlier studies made with low-temperature superconductors [14]. Its currents are projected to be considerably higher (kA range) than those reached in the experiments reported here, necessitating countercurrent switching in order to avoid the extremely high voltage peaks that can be generated by the high-inductance superconductor windings if the switching process does not run soft enough.…”

Section: Discussionmentioning

confidence: 95%

“…In order to improve the efficiency by making the coil losses vanish, the ISL investigated in cooperation with the CNRS of Grenoble (France) the use of high-temperature superconducting (HTS) coils to be integrated in an XRAM generator. (Plans for a low-temperature superconducting XRAM generator were made earlier at the ISL in cooperation with an external company [14]. )…”

Section: Introductionmentioning

confidence: 99%

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Three-stage superconducting XRAM generator

Dedie¹,

Brommer²,

Badel³

et al. 2011

IEEE Trans. Dielect. Electr. Insul.

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XRAM generators can be used for powering pulse loads demanding peak power ratings up to the gigawatt range, such as magneto-forming devices, ETC (electrothermal-chemical) guns, high-power microwaves, and railguns. They are a valid alternative to power capacitors being currently at the limits of their technology. In order to improve the XRAM generator in terms of efficiency, the German-French Research Institute of St. Louis (ISL) investigated in cooperation with the G2Elab the use of high-temperature superconducting coils for an XRAM generator. Moreover, as the XRAM switching principle can be integrated into a superconducting magnetic energy storage (SMES) system, a superconducting XRAM generator has the ability to hold its energy available on demand for a longer time than currently employed high-density power capacitors. Our three-stage superconducting XRAM test case reached a maximum charging current of 200 A, discharging a magnetic energy of 84 kJ at 600 A peak current into a 27 mΩ load during a 34 s long discharge. This is the first report in the literature on successful experiments with a superconducting XRAM generator.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Three-stage superconducting XRAM generator

Dedie¹,

Brommer²,

Badel³

et al. 2011

IEEE Trans. Dielect. Electr. Insul.

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“…The electrical power consumed by superconducting magnet can also be expressed by Eq. (35) [18]. The superconducting wires used in an electromagnet are generally made by niobiumetitanium with critical resistance between 3 Â 10 À20 and 2 Â 10 À14 Um at 4.2 K [19].…”

Section: Power Generationmentioning

confidence: 99%

Investigating the effect of channel angle of a subsonic MHD (Magneto-Hydro-Dynamic) generator on optimum efficiency of a triple combined cycle

Khalili

Dehkordi

Giahi

2015

Energy

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“…By reversing the letters, the term XRAM indicates that the generator is the inductive counterpart to the Marx generator and its goal is to generate high currents. First proposed by Koch in 1967 [61], this topology was investigated several times as a power source for railguns [9], [62]- [66]. However, the largest devices of such kind were built in russia for other applications: a 12.5 MJsystem within the X-ray test facility BAIKAL at TRINITI [67], and an XRAM system with a 20 MJ inductive storage at ESRI (see Tab.…”

Section: Stagementioning

confidence: 99%

“…Currently, XRAM generators for railguns are under investigation in Japan, China and France [56], [68]- [70]. The XRAM concept was already proven to be applicable to superconducting coils [9], [71], [72]. It is also promising together with an augmented railgun, then also known as XRAM-gun [62], [70], [73].…”

Section: Stagementioning

confidence: 99%

Review of Inductive Pulsed Power Generators for Railguns

Liebfried

2017

IEEE Trans. Plasma Sci.

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Abstract-This literature review addresses inductive pulsed power generators and their major components. Different inductive storage designs like solenoids, toroids and force-balanced coils are briefly presented and their advantages and disadvantages are mentioned. Special emphasis is given to inductive circuit topologies which have been investigated in railgun research such as the XRAM, meat grinder or pulse transformer topologies. One section deals with opening switches as they are indispensable for inductive storages and another one deals briefly with SMES for pulsed power applications. In the end, the most relevant inductor systems which were realized in respect to railgun research are summarized in a table, together with its main characteristics.

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Superconducting inductive pulsed power supply for electromagnetic launchers: design aspects and experimental investigation of laboratory set-up

Cited by 23 publications

References 4 publications

Three-stage superconducting XRAM generator

Three-stage superconducting XRAM generator

Investigating the effect of channel angle of a subsonic MHD (Magneto-Hydro-Dynamic) generator on optimum efficiency of a triple combined cycle

Review of Inductive Pulsed Power Generators for Railguns

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