Transient response analysis method for transmission line system terminated with frequency-variable load

Abstract

The invention relates to the technical field of electromagnetic compatibility, and in particular relates to a transient response analysis method for a transmission line system terminated with a frequency-variable load. The method comprises the following steps: firstly, measuring or calculating the admittance of a frequency-variable load port at a sampling frequency point to obtain corresponding sampling admittance, and carrying out equivalence on the admittance of the port by adopting a rational function approximation mode; secondly, solving a pole and a residue required by a rational approximation function by adopting a matrix pencil method, and substituting the pole and the residue into a piecewise linear recursive convolution technology to realize piecewise linear recursive convolution expression of voltage at a connection point of the transmission line and the frequency-variable load; and finally, realizing transient response analysis of the transmission line system with the frequency-variable load in combination with a transmission line equation. According to the method, the matrix pencil method (MPM) and the piecewise linear recursive convolution (PLRC) technology are combined, transient response analysis of the transmission line system of the terminating frequency-variable load is achieved, meanwhile, the method has the advantages of being rapid in calculation and high in applicability, and the method can be applied to analysis of the electromagnetic compatibility problem in the fields of electric power, control, communication and the like.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility analysis, in particular to a transient response analysis method of a transmission line system terminated with a frequency-varying load. Background technique [0002] Transient response of transmission line system is an important research content in the field of electromagnetic compatibility. For the transmission line system grounded through pure resistance, the analysis of its transient response characteristics can be well realized by using the transmission line equation. However, when the load has frequency-varying characteristics, the complexity and difficulty of its transient response analysis will increase significantly. The state variable equation is a classic method for analyzing the transient response of a frequency-varying network, and has been widely used. It uses the current flowing through the inductor in the frequency-varying network and the voltage across the ca...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a transient response analysis method for a transmission line system terminated with a frequency-varying load, which combines the matrix beam method (MPM) and the piecewise linear recursive convolution (PLRC) technology, which can It is suitable for situations where the internal network structure of frequency-varying loads is complex or unknown, and can improve computing efficiency at the same time

Images