Development of a 3 MV transfer capacitor used in an electromagnetic pulse simulator

Chen Zhiqiang; Xie Linshen; Jia Wei; He Xiaoping; Tang Junping; Chen Weiqing

doi:10.11884/HPLPB202133.210195

Volume 33 Issue 9

Sep. 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(9): 095001

Guo Qi, Fu Peng, Jiang Li. Design of temperature compensation for Hall sensor[J]. High Power Laser and Particle Beams, 2017, 29: 046003. doi: 10.11884/HPLPB201729.160466

Citation:

Chen Zhiqiang, Xie Linshen, Jia Wei, et al. Development of a 3 MV transfer capacitor used in an electromagnetic pulse simulator[J]. High Power Laser and Particle Beams, 2021, 33: 095001. doi: 10.11884/HPLPB202133.210195

Guo Qi, Fu Peng, Jiang Li. Design of temperature compensation for Hall sensor[J]. High Power Laser and Particle Beams, 2017, 29: 046003. doi: 10.11884/HPLPB201729.160466

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Development of a 3 MV transfer capacitor used in an electromagnetic pulse simulator

doi: 10.11884/HPLPB202133.210195

State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China

Received Date: 2021-05-24
Rev Recd Date: 2021-07-13

Available Online: 2021-07-22

Publish Date: 2021-09-15

Abstract

Abstract

The design process and experimental results of a transfer capacitor used in a large vertical polarization bounded wave simulator are introduced. The capacitor adopts modular design based on capacitor elements and components, and forms a cone shape. The shell is made of vacuum process glass fiber reinforced plastic material. The capacitance value of capacitor is determined by the equivalent two-stage pulse compression circuit of the simulator, which is calculated to be 1.8 nF. The internal insulation medium of capacitor is dodecyl benzene, while the external insulation environment is 45# transformer oil. The designing working voltage is 3 MV, and the capacitor’s insulation length is mainly determined by the body insulation characteristics of capacitor elements. Three-dimensional electromagnetic simulation is used to estimate the inductance of the circuit composed of capacitor and switch, and the result is close to the measured data 623 nH. The measurement for the pulse voltage of capacitor is achieved by integrating the current of the capacitor, and the acquisition of the current is realized by a measurement module which consists of three oxidation film resistors in parallel and encapsulated in SF₆ gas. The actual operation data show that the designed capacity of the transfer capacitor is achieved and the calibration coefficient of the measuring device is stable and the working voltage can reach up to 3.1 MV.
- electromagnetic pulse simulation device,
- transfer capacitor,
- pulse compression,
- insulation design,
- pulse voltage measurement

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References

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