Utilization Optimization of Capacitive Pulsed Power Supply in Railgun

Genrong Cao, Hongjun Xiang, Zhiming Qiao, Chunyan Liang, Xichao Yuan, Jin Wang and Bin Lei
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Genrong Cao: Department of Ammunition Engineering, Army Engineering University, Shijiazhuang 050003, China
Hongjun Xiang: Department of Ammunition Engineering, Army Engineering University, Shijiazhuang 050003, China
Zhiming Qiao: Department of Ammunition Engineering, Army Engineering University, Shijiazhuang 050003, China
Chunyan Liang: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Xichao Yuan: Department of Ammunition Engineering, Army Engineering University, Shijiazhuang 050003, China
Jin Wang: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjing 300401, China
Bin Lei: Department of Ammunition Engineering, Army Engineering University, Shijiazhuang 050003, China

Energies, 2022, vol. 15, issue 14, 1-12

Abstract: The excitation pulse current used to drive the railgun needs to present very a high magnitude (hundreds of kA) flat-top with very low ripple. At present, the main method to obtain this current is to increase the number of the capacitive pulsed power supply (PPS) modules. However, low utilization and massive volume of the railgun system would occur with this method, hampering the application of railgun. Therefore, the utilization optimization technology of PPS is researched in this paper. In order to obtain highly stable flat-top current, the control strategy of the capacitive PPS is designed, and a new charging voltage configuration is proposed, which significantly decreases the use of the capacitive modules. Besides, a miniaturization transformation scheme of capacitive PPS is proposed based on the control strategy. The result shows that the flat-top current ripple has the biggest influence on the PPS utilization, and the smaller the flat-top current ripple, the lower the utilization. When the current with 200 kA magnitude and 0.75% flat-top current ripple is achieved, an 81.9% decrease of volume and a 428.7% utilization improvement are achieved through miniaturization transformation.

Keywords: pulsed power supply; utilization; low current ripple; miniaturization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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