A new generation of pulsed power supplies for experimental physics based on supercapacitors

Maffia, G.; Lampasi, Alessandro; Zito, Pietro

doi:10.1109/eeeic.2015.7165313

Cited by 7 publications

(6 citation statements)

References 16 publications

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“…The idea is to obtain the pinch upgrade by superimposing a 50 kA generator to the existing one, while the new PFCs will be fed by another specific power supply. As introduced in Section 4.5, the use of technology based on supercapacitors (SCs) [52] can reduce the required input power, allowing to feed all the system from the 380 V grid. …”

Section: Anode and Cathode Electrodesmentioning

confidence: 99%

“…However, as reported in Table 2, the duty cycle for these converters is relatively small, mainly due to the heat load on the PROTO-SPHERA copper and tungsten electrodes. This is a typical situation where SCs can be successfully used [52].…”

Section: Pinch Power Supplymentioning

confidence: 99%

“…A SC-based scheme was also used to produce the current step from 10 kA to 60 kA in less than 1 ms, necessary for the following experimental phases [52].…”

Section: Pinch Power Supplymentioning

confidence: 99%

“…Even if the breakdown is easier with the cylindrical anode, this anode was just a source of troubles (also because the magnetic field configuration was designed for the annular anode). When the current during the experiment reaches the target value, the new power supply will extend this current up to 60 kA [52]. This current may appear extraordinary both in magnitude and in derivative, but they are usual for a standard tokamak [4,54].…”

mentioning

confidence: 99%

“…When the current during the experiment reaches the target value, the new power supply will extend this current up to 60 kA [52]. This current may appear extraordinary both in magnitude and in derivative, but they are usual for a standard tokamak [4,54].…”

mentioning

confidence: 99%

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Progress of the Plasma Centerpost for the PROTO-SPHERA Spherical Tokamak

et al. 2016

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Plasma properties can be useful in a wide spectrum of applications. Experimental projects on controlled nuclear fusion are the most challenging of these applications and, at the same time, the best way to approach plasma science. Since nuclear fusion reactors can ensure a large-scale, safe, environmentally-friendly and virtually inexhaustible source of energy, several fusion-oriented megaprojects and innovative companies are appearing all over the world. PROTO-SPHERA (Spherical Plasma for HElicity Relaxation Assessment) is the first plasma project with a simply connected configuration, namely not requiring additional objects inside the plasma volume. This is obtained by a plasma arc, shaped as a screw pinch, acting as the centerpost of a spherical torus with minimal aspect ratio. Due to its intrinsic physical, engineering and economic advantages, this new approach is attractive also on an industrial scale and with several developments that still needs to be explored. This paper presents the PROTO-SPHERA basic principles, its first encouraging results and its expected and potential evolutions.

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Section: Anode and Cathode Electrodesmentioning

confidence: 99%

Section: Pinch Power Supplymentioning

confidence: 99%

“…A SC-based scheme was also used to produce the current step from 10 kA to 60 kA in less than 1 ms, necessary for the following experimental phases [52].…”

Section: Pinch Power Supplymentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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