Enhanced PEEC Model Based on Automatic Voronoi Decomposition of Triangular Meshes

Gabriadze, G.; Chiqovani, G.; Gheonjian, A.; Oganezova, I.; Demurov, A.; Kutchadze, Z.; Bunlon, Xavier; Ajebbar, Fatima; Jobava, R.

doi:10.1109/temc.2019.2956586

Cited by 6 publications

(7 citation statements)

References 17 publications

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“…Furthermore, the net list itself would require a considerable amount of disk space. For these reasons, many authors have developed different solution strategies based, for instance, on LU factorisation [37] (when the problem dimension is reasonable), iterative solvers [36], or more sophisticated methods such as Hierarchical Matrices coupled with cross approximation [15], [16], Fast Multiple [17], Voronoi decomposition [18], and others [19], [38], [39].…”

Section: Discretization: Voxelizationmentioning

confidence: 99%

“…3 improve the range of applicability of the PEEC methods. For instance, PEEC has been coupled with Hierarchical Matrices and with cross approximation in [15] and [16], with the Fast Multiple Method in [17] and [12], with Voronoi decomposition in [18], and other methods in, e.g., [19]. All these approaches provide a general computational cost reduction.…”

Section: Introductionmentioning

confidence: 99%

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FFT-PEEC: A Fast Tool From CAD to Power Electronics Simulations

Torchio

Lucchini

Schanen

et al. 2022

IEEE Trans. Power Electron.

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A fast and general Partial Element Equivalent Circuit (PEEC) method based on the Fast-Fourier-Transform (FFT) is proposed for the first time. The numerical tool only requires common CAD data input files (e.g. .stl format), then the discretization process is performed automatically by means of a fast voxelization technique based on ray intersection, thus drastically reducing the human effort required to setup the model. The method allows for considering at the same time inductive and capacitive effects, and is focused on power electronics applications where propagation effects can be neglected, whereas all the other electromagnetic phenomena are considered. Specifically, the proposed method is particularly suited for problems where both electric and magnetic fields are equally important and therefore quasistatic approximations do not apply. An ad-hoc preconditioner which significantly speeds-up the solver is also proposed and, thanks to the FFT, both memory and computation time are significantly reduced, without the need of applying data compression. Both linear and non-linear materials are considered by the proposed FFT-PEEC method. Sample implementation of the method is made publicly available.

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Section: Discretization: Voxelizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

FFT-PEEC: A Fast Tool From CAD to Power Electronics Simulations

Torchio

Lucchini

Schanen

et al. 2022

IEEE Trans. Power Electron.

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“…Another advantage is the possibility to extract impedance of non-closed current paths in a wide-frequency range by defining the input and output ports, while in the three-dimensional (3-D) FEMbased EM solvers, only closed current paths can be defined [7]. In PE applications it is often challenging to define common return current paths, and specialized, therefore the equivalent-RLCG-circuit-based solvers [11,13,22] have been frequently employed in engineering practice for the parasitic extraction and generation of EM macromodels. The RLCG solvers are often related to the 3-D PEEC-based modeling, but there are major differences between these two numerical techniques.…”

Section: Circuit-oriented 3-d Electromagnetic Modelingmentioning

confidence: 99%

“…The calculation of electric and magnetic field effects in the QS RLCG solvers are based on two independent solvers, a RL solver and a CG solver, for the extraction of inductive and capacitive circuit behavior, respectively, [11,13]. The EM field distribution to be simulated is approximated on a 3-D modeling structure using the equivalent lumped R-L-C-G circuit representation.…”

Section: Rclg-solversmentioning

confidence: 99%

“…The Q3D derives equivalent circuits of layout parasitics in a form of R-L-C-G lumped elements, where R-L and C-G are calculated by decoupling the electric and magnetic field components in the Maxwell's equations. A similar approach is also used in [13], where the capacitive and inductive effects are calculated by two independent solvers, a 3-D MoM electrostatic and a 3-D MoM magnetostatic solver, respectively. In [11], decoupled modeling of capacitive and inductive layout behavior was treated as a QS EM field assumption.…”

Section: Introductionmentioning

confidence: 99%

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Broadband Circuit-Oriented Electromagnetic Modeling for Power Electronics: 3-D PEEC Solver vs. RLCG-Solver

Kovacevic-Badstuebner

Romano

Antonini

et al. 2021

Energies

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Broadband electromagnetic (EM) modeling increases in importance for virtual prototyping of advanced power electronics systems (PES), enabling a more accurate prediction of fast switching converter operation and its impact on energy conversion efficiency and EM interference. With the aim to predict and reduce an adverse impact of parasitics on the dynamic performance of fast switching power semiconductor devices, the circuit-oriented EM modeling based on the extraction of equivalent lumped R-L-C-G circuits is frequently selected over the Finite Element Method (FEM)-based EM modeling, mainly due to its lower computational complexity. With requirements for more accurate virtual prototyping of fast-switching PES, the modeling accuracy of the equivalent-RLCG-circuit-based EM modeling has to be re-evaluated. In the literature, the equivalent-RLCG-circuit-based EM techniques are frequently misinterpreted as the quasi-static (QS) 3-D Partial Element Equivalent Circuit (PEEC) method, and the observed inaccuracies of modeling HF effects are attributed to the QS field assumption. This paper presents a comprehensive analysis on the differences between the QS 3-D PEEC-based and the equivalent-RLCG-circuit-based EM modeling for simulating the dynamics of fast switching power devices. Using two modeling examples of fast switching power MOSFETs, a 3-D PEEC solver developed in-house and the well-known equivalent-RLCG-circuit-based EM modeling tool, ANSYS Q3D, are compared to the full-wave 3-D FEM-based EM tool, ANSYS HFSS. It is shown that the QS 3-D PEEC method can model the fast switching transients more accurately than Q3D. Accordingly, the accuracy of equivalent-RLCG-circuit-based modeling approaches in the HF range is rather related to the approximations made on modeling electric-field induced effects than to the QS field assumption.

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