Time Domain Parallel Calculation Method for the Coupling of Transmission Line Network Terminated with Complex Circuits

YE Zhihong; ZHANG Yu; LU Changchang

doi:10.11999/JEIT230098

Volume 46 Issue 2

Feb. 2024

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YE Zhihong, ZHANG Yu, LU Changchang. Time Domain Parallel Calculation Method for the Coupling of Transmission Line Network Terminated with Complex Circuits[J]. Journal of Electronics & Information Technology, 2024, 46(2): 713-719. doi: 10.11999/JEIT230098

Citation:

YE Zhihong, ZHANG Yu, LU Changchang. Time Domain Parallel Calculation Method for the Coupling of Transmission Line Network Terminated with Complex Circuits[J]. Journal of Electronics & Information Technology, 2024, 46(2): 713-719. doi: 10.11999/JEIT230098

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Time Domain Parallel Calculation Method for the Coupling of Transmission Line Network Terminated with Complex Circuits

doi: 10.11999/JEIT230098

YE Zhihong^{1, 2
,
,},
ZHANG Yu¹,
LU Changchang¹

1.
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2.
State Key Laboratory of Power Grid Environmental Protection, Wuhan 430074, China

Funds: Open Fund of State Key Laboratory of Power Grid Environmental Protection (GYW51202301435)

Received Date: 2023-02-23
Rev Recd Date: 2023-12-25

Available Online: 2023-12-25

Publish Date: 2024-02-29

Abstract

Abstract

Efficient field-circuit synchronous simulation techniques used for the coupling analysis of Transmission Line (TL) network with complex circuits excited by ambient wave are still rare. In this work, the TL equations are combined with the Norton’s theorem, the Substitution theorem Finite-Difference Time-Domain (FDTD) method, NGSPICE software and parallel technique based on Message Passing Interface (MPI) to form an efficient parallel time domain hybrid method (FDTD-Transmission Line equation-NGSPICE, FDTDTL-NGSPICE). Firstly, the overall structure of transmission line network is decomposed into the transmission line subsystem and complex circuit subsystems according to the Norton’s theorem and Substitution theorem, and the corresponding equivalent circuit models are constructed. Then the parallel FDTDTL method is employed to solve the voltage and current responses along the transmission line subsystem, which are utilized to extract the current sources and equivalent admittance of the Norton’s equivalent circuits. Finally, the NGSPICE software is applied for the conducted interference analysis of the complex circuit subsystems to obtain the transient responses on the ports and all elements of the complex circuits, and then the port voltages are fed back to the transmission line subsystem as boundary conditions. The significant feature of this time domain hybrid method is that it realizes the field-line-circuit synchronous simulation of transmission line network. And the confidence of this method is verified by the comparison of three typical scenario examples simulated by this method and the electromagnetic software CST Cable Studio (CS).

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References(16)

References

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