Prototype Test and Manufacture of a Modular 12.5 MJ Capacitive Pulsed Power Supply

Ding, Hanming; Jiang, Chengxi; Ding, Tonghai; Xu, Yun; Li, L; Duan, Xianzhong; Pan, Yuan; Herlach, F.

doi:10.1109/tasc.2009.2039785

Cited by 29 publications

(10 citation statements)

References 6 publications

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“…The progress in pulsed high magnetic field (HMF) research in the last two decades was driven by multicoil superconductive [49] solenoid designs [7][22] and capacitor power systems [18] [24] [45]. The addition of multiple concentric coils each pulsing as the successive outer coils are energised is the key to reaching 100T fields [23][56] and beyond [54].…”

Section: High Energy Pulsed Solenoidsmentioning

confidence: 99%

“…Despite this critical source of variance in the inductance result, noted as Key Variance 1 (KV1), it is clear that any conductive yoke enhances an electromagnet's [31] [51] inductance thus current creation (G1) then force applied (G2). Linear inclusion of µ 𝑟 in ( 12) is presented in (18) with results shown in Table 2 below for both yoked and unyoked designs to demonstrate KV1's impact:…”

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confidence: 99%

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Concept analysis of a distributed thrust system, a novel inductive propulsion method using high energy pulse solenoids in satellite swarms for reusable interorbital freight transport

Wegener¹

2022

Preprint

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To date only single vehicle thrust designs have been considered for propulsion in space, however there is no limitation preventing multivehicle distributed thrust application designs if a rigid structure can be constructed electromagnetically. By considering the regularity of planetary orbits and distance between orbital paths, a location in space can be targeted for next orbit arrival of a shipping container propelled on an intercepting vector that is a result of inductive propulsion vector combination. This concept is achieved with Nb3Sn high energy pulse solenoids that enable a square pyramidal swarm of satellites to decompose the intercepting orbital transfer vector and propel a 20 tonne steel shipping container towards a destination swarm. This paper is a thought experiment with first pass mechanical analysis that establishes a validity algorithm then concludes that the proposed yoked solenoid design is fit for purpose. Two factors are noted as key variances that must be investigated in further research with numerical modelling tools before the proposed design can be considered fully functional.

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Section: High Energy Pulsed Solenoidsmentioning

confidence: 99%

mentioning

confidence: 99%

Concept analysis of a distributed thrust system, a novel inductive propulsion method using high energy pulse solenoids in satellite swarms for reusable interorbital freight transport

Wegener¹

2022

Preprint

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“…Basic scientific research in biology, chemistry, geology, material science engineering, medicine and in particular in solid-state physics, can be carried out by making use of this extreme physical environment. To meet the requirement of different rise times and pulse width at useful field levels, four types of magnets are designed; these are short pulse magnets, long pulse magnets, multistage magnets and quasi-continuous magnets (QCM) [1], [2].…”

Section: Design and Analysis Of A Combined Power Supply For High-fielmentioning

confidence: 99%

Design and Analysis of a Combined Power Supply for High-Field Quasi-Continuous Magnets

Ding

Liu

Duan

et al. 2012

IEEE Trans. Appl. Supercond.

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The high-field quasi-continuous magnets (QCM) are of great interest for scientific experiments that require long pulse duration and in particular a field pulse with a flat-top. For the QCM, the power supply is a real challenge. At the Wuhan National High Magnetic Field Center (WHMFC), it is planned to realize a 45 T/500 ms flat-top field by the series combination of a 0.6 kV/35 kA battery bank and a 12-pulse rectifier that is powered by a 100 MVA/100 MJ flywheel pulse generator (FPG). In order to reduce the dc current ripple, a dc passive filter is connected in parallel with the rectifier. The simulation of the pulse shape with respect to the voltage profile supplied by the power supply takes the resistance of the magnet into account; this increases with temperature as a function of coil current. The configuration and the associated control strategy are presented in this paper. A simulation model of the combined power supply system is developed and compared with the model of a single rectifier supply system. Results are provided to validate the proposed method.Index Terms-12-pulse rectifier, flywheel pulse generator, highfield, lead acid batteries, quasi-continuous magnets.

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“…In the case that the magnet satisfies the requirements for the heat capacity as well as the mechanical strength, the power supply is necessary to provide a high and stable output to the magnet during the period of flat-top. Therefore, much literature is focused on the power supply [7]- [10].…”

Section: Introductionmentioning

confidence: 99%

Generation of a Flat-Top Magnetic Field With Multiple-Capacitor Power Supply

Ding

Fang

et al. 2022

IEEE Access

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The flat-top magnetic field (FTMF) can meet scientific experimental requirements for higher magnetic intensity, longer flat-top pulse width, and lower ripple in physics, chemistry, biology, and other scientific fields. This paper proposes an FTMF system powered by the multiple-capacitor power supply (MCPS). The MCPS consists of several capacitor banks with customizable capacitance and given voltage. These banks discharge sequentially based on the designed time-series to yield an FTMF. Compared with other methods for generating the FTMF, the MCPS can easily generate FTMFs with high parameters and flexible adjustability of the pulse width. Due to the coupled variable parameters between and within the power supply and the magnet, a hybrid algorithm based on the genetic algorithm (GA) and particle swarm optimization (PSO) is applied to calculate the discharge parameters of the MCPS. The optimal solution from the GA-PSO hybrid algorithm is visualized and selected by the basis vector method. For verifying the effectiveness of the MCPS and the optimization method, a series of FTMFs at different magnetic field strength levels are modeled in MATLAB/Simulink and achieved in the experiment. The generated FTMF with the highest field strength is 50 T, its pulse width is 70 ms, and ripple is less than 0.7%.INDEX TERMS Flat-top high magnetic field, multiple-capacitor power supply, multi-objective optimization, GA-PSO hybrid algorithm.

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Prototype Test and Manufacture of a Modular 12.5 MJ Capacitive Pulsed Power Supply

Cited by 29 publications

References 6 publications

Concept analysis of a distributed thrust system, a novel inductive propulsion method using high energy pulse solenoids in satellite swarms for reusable interorbital freight transport

Concept analysis of a distributed thrust system, a novel inductive propulsion method using high energy pulse solenoids in satellite swarms for reusable interorbital freight transport

Design and Analysis of a Combined Power Supply for High-Field Quasi-Continuous Magnets

Generation of a Flat-Top Magnetic Field With Multiple-Capacitor Power Supply

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