Analysis of Energy Conversion Efficiency of a Capacitor-Based Pulsed-Power System for Railgun Experiments

Liu, Peizhu; Li, Jun; Gui, Yingchun; Li, Shizhong; Zhang, Qingxia; Su, Ning

doi:10.1109/tps.2010.2056708

Cited by 22 publications

(8 citation statements)

References 1 publication

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“…This method could calculate the forward thrust of armature, and be used to analyze system performance of railgun and calculate inductance gradient. However, due to structural symmetry, ignoring the actual local force X and Y directions of armature, this approach was limited by the guide of the armature design, so it was the need for more detailed calculations the mechanical properties of armature [6].…”

Section: The Force Of Single Block Armaturementioning

confidence: 99%

Analysis of the dynamic characters of C-shaped armature in railgun

Guo

Zhang

et al. 2014

2014 17th International Symposium on Electromagnetic Launch Technology

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In order to obtain the dynamic characteristics of Cshaped armature, the finite element software Ansoft was used to model the C-shape armature of simple square-bore railgun based on the assumption of no disjunction and ideal complete contact between the armature and rail. Five types of armature, such as monolithic armature, whole chunked armature, forward-back chunked armature, up-down chunked armature and left-right chunked armature, the general and local mechanics characteristics were calculated and analyzed. The force exerted on the each part of the armature was discussed. The method of the optimal geometric structure for C-shaped armature was formed, which could provide the basic reference for the armature design.

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Section: The Force Of Single Block Armaturementioning

confidence: 99%

Analysis of the dynamic characters of C-shaped armature in railgun

Guo

Zhang

et al. 2014

2014 17th International Symposium on Electromagnetic Launch Technology

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“…Each segment is triggered with a designed delay time to make a proper waveform and each of them can include some modules according to experimental need. We had increased the length of launcher from 4m to 6m [2]. The launcher is mainly composed of a pair of parallel rails and the fixture structure of rails.…”

Section: A Pps Systemmentioning

confidence: 99%

“…However, the current of module drops very quickly, which proves that the resistance of system is high. We have do some work to improve conversion efficiency by decreasing the cables resistance [2]. A new cable may be used in the railgun launch system now, resistance of which is less than 0.5mΩ/m.…”

Section: A the Resistance Of System Componentsmentioning

confidence: 99%

Study on energy conversion efficiency of electromagnetic launcher with a capacitor-based pulsed power system

Liu

et al. 2012

2012 16th International Symposium on Electromagnetic Launch Technology

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The stored-to-kinetic energy conversion efficiency of railgun system is investigated by simulation and experiment methods. There are many factors can affect railgun system conversion efficiency. The factors include some parameters values of PPS, the velocity of armature, the inductance gradient of rail and so on. To analyze the stored-to-kinetic energy conversion efficiency, a novel electric circuit simulation model for a railgun system is built. The simulation results showed the less resistance and the more inductance of PPS, the more inductance gradient of laucher and the higher muzzle velocity of armature can improve the energy conversion efficiency of the railgun system. Some experimental results with the 6MJ railgun system of Beijing Institute of Special Electromechanical Technology (BISET)are also presented in this paper, and they prove the simulation results.Index Terms-conversion efficiency，Pulsed power supply system, railgun, numerical simulation.

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“…, S_open8 are insulated-gate bipolar transistors (IGBTs), the thyristor TH could be replaced by the diodes that reverse paralleled to the IGBTs. We select the resistance and inductance of the load and line as 1 mΩ and 0.4 μH (refer to [8]). The capacitor in the primary winding is selected 60 μF.…”

Section: A Simulation Modelmentioning

confidence: 99%

Inductive Pulsed Power Supply Consisting of Superconducting Pulsed Power Transformers With Marx Generator Methodology

Wang

Chen

et al. 2012

IEEE Trans. Appl. Supercond.

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We have been developing an inductive pulsed power supply (PS) consisting of several superconducting pulsed power transformers with Marx generator methodology. Each of these pulsed power transformers consists of a copper secondary winding and a high-temperature superconducting primary winding. In order to obtain a high-voltage impulse, the Marx generator should be charged via the parallel connection of capacitors and discharged via a series connection. In contrast, this superconducting pulsed PS is excited in series connection of superconducting primary windings and discharged in the parallel connection to obtain a large pulsed electric current. Our preliminary experiment result showed that the process of one transformer module was correct. In this paper, the characteristics and simulation results of the superconducting inductive pulsed PS are described.

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Analysis of Energy Conversion Efficiency of a Capacitor-Based Pulsed-Power System for Railgun Experiments

Cited by 22 publications

References 1 publication

Analysis of the dynamic characters of C-shaped armature in railgun

Analysis of the dynamic characters of C-shaped armature in railgun

Study on energy conversion efficiency of electromagnetic launcher with a capacitor-based pulsed power system

Inductive Pulsed Power Supply Consisting of Superconducting Pulsed Power Transformers With Marx Generator Methodology

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