基于时域有限积分技术的四级串联快脉冲直线型变压器驱动源电磁特性

doi:10.19595/j.cnki.1000-6753.tces.L90321

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Abstract The material distribution and internal structure of the fast linear transformer driver (FLTD) induction cavity are complex, and the short rise time of the discharging current will make the spatial discretization more dense, leading to a sharp increase in the computational expenditure. In this paper, the electromagnetic field distributions of the 4-stage MA-class FLTD during brick discharge is studied using the time-domain finite integration technique (TD-FIT). The discharge currents of capacitors in the circuit model are coupled to the 3-D field model as excitations. The grid length of the important parts in the FLTD cavity is refined by the nonuniform grid. To reduce the number of degrees of freedom, the surface impedance boundary condition is adopted to model good conductors. The FLTD is divided into 24-different subdomains by the domain decomposition method based on the equivalence principle theorem. The results demonstrate that the TD-FIT can effectively analyse the pulsed transients in the FLTD cavity, the output performance and electromagnetic field characteristics of the two induction cavities are in good agreement, and the design of the four-stage FLTD sharing common cavity shell is practicable.

Key words： Linear transformer driver finite integration technique electromagnetic transients field-circuit coupling domain decomposition method

Received: 09 July 2020

PACS:	TM15
	TM832

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	Qiu Hao
	Wang Shuhong
	Sun Fengju
	Wang Zhiguo
	He Xu

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Qiu Hao,Wang Shuhong,Sun Fengju等. The Electromagnetic Characteristics of the Four-Stage Series-Connected Fast Linear Transformer Driver Based on Time-Domain Finite Integration Technique[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 816-826.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90321 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I4/816

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