Resistive Coupling-Based Waveform Relaxation Algorithm for Analysis of Interconnect Circuits

Menkad, Tarik; Dounavis, A.

doi:10.1109/tcsi.2017.2665973

Cited by 7 publications

(3 citation statements)

References 36 publications

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“…In [7][8][9][10], the authors pointed out that the MATE method must be used at the lumped elements; its application is also limited. Then, Saleh et al proposed waveform relaxation algorithms based on the MATE method in 1980s [11][12][13]; these methods allow different simulation steps in different sub-systems. They improve the efficiency by setting larger step for sub-systems that are not necessary for high precision.…”

Section: Introductionmentioning

confidence: 99%

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Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Hao¹,

Fu²,

Xiao³

2022

IET Generation Trans & Dist

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Traditional decoupling methods in real-time simulation of complex power systems are poor in stability and unsatisfactory in use. In order to solve this problem, an improved decoupling method based on a terminal resistor is proposed. By paralleling a fixed-value resistor and inverse-paralleling a controlled current source in the traditional ideal transformer interface, the stability is greatly improved and the range of its application is broadened. Then, the value range of resistance is deduced theoretically. Furthermore, this interface is extended to the multi-point decoupling systems; the different terminal resistances in multiple interfaces under the constraints of stability and accuracy are designed. Finally, the typical single-point and multi-point decoupling systems are constructed on the Rt-lab realtime simulation platform. The simulation results verify the effectiveness of the proposed decoupling method and indicate that the design of terminal resistances is correct either in single-point decoupling systems or in multi-point decoupling systems.

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Section: Introductionmentioning

confidence: 99%

“…Then, Saleh et al. proposed waveform relaxation algorithms based on the MATE method in 1980s [11–13]; these methods allow different simulation steps in different sub‐systems. They improve the efficiency by setting larger step for sub‐systems that are not necessary for high precision.…”

Section: Introductionmentioning

confidence: 99%

Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Hao¹,

Fu²,

Xiao³

2022

IET Generation Trans & Dist

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“…WR and OWR were also studied for RLCG transmission lines [1,15,16,20,11]. A different approach for the interconnect circuits has been studied in [27], where the interconnect circuit is partitioned using Norton interfaces which depend upon resistors. However, in all these references, both WR and OWR were studied for the case of non-overlapping circuits.…”

mentioning

confidence: 99%

Analysis of Overlap in Waveform Relaxation Methods for RC Circuits

Gander

Kumbhar

Ruehli

2018

Lecture Notes in Computational Science and Engineering

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Waveform relaxation (WR) methods are based on partitioning large circuits into sub-circuits which then are solved separately for multiple time steps in so called time windows, and an iteration is used to converge to the global circuit solution in each time window. Classical WR converges quite slowly, especially when long time windows are used. To overcome this issue, optimized WR (OWR) was introduced which is based on optimized transmission conditions that transfer information between the sub-circuits more efficiently than classical WR. We study here for the first time the influence of overlapping sub-circuits in both WR and OWR applied to RC circuits. We give a circuit interpretation of the new transmission conditions in OWR, and derive closed form asymptotic expressions for the circuit elements representing the optimization parameter in OWR. Our analysis shows that the parameter is quite different in the overlapping case, compared to the non-overlapping one. We then show numerically that our optimized choice performs well, also for cases not covered by our analysis. This paper provides a general methodology to derive optimized parameters and can be extended to other circuits or system of differential equations or space-time PDEs.

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