Efficient Capacitance Calculations for Three-Dimensional Multiconductor Systems

IEEE Trans. Power Delivery

2009

Abstract-Faced with the challenges of increasing operational frequencies and switching rates of modern power electronics devices used in power systems, there is need for high frequency models (up to a few megahertz) for power components like reactors, capacitors banks and transformers. This paper presents the application of PEEC theory for the creation of high frequency, electromagnetic models for air-core reactors. The electromagnetic field couplings are separated in mutual partial inductances and mutual coefficients of potential giving a correct solution from DC to a maximum frequency determined by the meshing. The PEEC models are validated by comparing simulation results, for both time and frequency domain analysis, against measurements and other established modeling methods, and show good agreement. The model created by PEEC theory, could be helpful in the design and diagnostics of air-core reactors and other power system components.

Section: B Equivalent Circuit Interpretation Of Efiementioning

confidence: 99%

Section: B Partial Element Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Air-Core Reactors From DC to Very High Frequencies Using PEEC Models

Enohnyaket

IEEE Trans. Power Delivery

2009

“…Resistive, capacitive and inductive properties of each cell in the structure is represented as resistance, (partial) coefficients of potential [7] and partial inductance [8] respectively. Also, the electric and magnetic couplings between the cells are implemented as mutual capacitances and mutual partial inductances [6].…”

Section: Introductionmentioning

confidence: 99%

Feasibility analysis of specialized PEEC solvers in comparison to SPICE-like solvers

Safavi

2012

J Comput Electron

The Partial Element Equivalent Circuit (PEEC) method provides an electric equivalent circuit for a physical geometry. This circuit can be combined with external passive/active lumped elements, enabling the simulation and co-design of combined circuit and electromagnetic (EM) structures. The resulted circuit can be solved in a dedicated solver, or equivalently can be exported to a SPICElike solver. In this paper, the inclusion of passive and active lumped circuit elements in PEEC method has been studied and a combined solver has been developed. To demonstrate the capability of the solver, three structures are examined. All examples include a transmission line-PEEC model and active components. Results are compared with those from OrCAD, where an analytical model for the transmission line is used. Good agreement between the results shows the feasibility of using PEEC to solve this type of mixed problems. Also, comparison has been made in terms of implementation and feasibility for the aim of developing the optimal EM solver with active elements support. It is shown that SPICE is not a suitable choice to solve the PEEC models and, a specialized solver can solve the system in a much faster way. On the other hand, all the definitions and models of circuit devices e.g. transistors, MOSFETs, etc. should be implemented in the specialized solver, which raises a tradeoff between the solution time and the implementation time.

“…The partial element equivalent circuit (PEEC) method [1], [2] is widely used for solving mixed circuit and electromagnetic problems. The method gives a framework for creating electric equivalent circuit representations for threedimensional structures and calculating self and mutual inductances and capacitances.…”

Section: Introductionmentioning

confidence: 99%

Parallel Implementations of the PEEC Method

2007 IEEE International Symposium on Electromagnetic Compatibility

Anttu

2007

Abstract-This paper presents a parallel implementation of a partial element equivalent circuit (PEEC) based electromagnetic modeling code. The parallelization is based on the GMM++ and ScaLAPACK packages. The parallel PEEC solver was successfully implemented and tested on several high performance computer systems. Large structures containing over 50 000 unknown current and voltage basis functions were successfully analyzed and memory, performance, and speedup results are presented. The numerical examples are both of orthogonal and nonorthogonal type with analysis in the time-and frequencydomain. I. INTRODUCTIONThe partial element equivalent circuit (PEEC) method [1], [2] is widely used for solving mixed circuit and electromagnetic problems. The method gives a framework for creating electric equivalent circuit representations for threedimensional structures and calculating self and mutual inductances and capacitances. The resulting equivalent circuits can be solved in SPICE-like solvers or, for the full-wave case, by creating and solving the fully coupled circuit equations.As for all the methods within computational electromagnetics (CEM), the problem system size that can be solved is increasing with more efficient computer implementations [3] and more powerful computer systems. However, the desired problem sizes to be solved are also increasing and there is a clear gap between desired and possible problem size to be solved. Fast solutions for CEM problems have been treated for a long time, i.e. [4] where both differential and integral equation solvers were discussed. The next step after faster implementations are to improve the computing power running the algorithms. One solution is to use GRID computing on different levels. For example using a local area network of interconnected computers to speed up calculations or by porting the code to parallel architectures. Recent publications on the extension to parallel implementations are for example [5] where a nesting combination of the finite element domain decomposition method and the algebraic multigrid method is presented, [6] on the implicit FDTD method, and [7] for a parallel version of the numerical electromagnetics code (NEC).Until now, no parallel implementation on the PEEC method have been reported except for in [8] where a sequential code was parallelized for LANs using a freeware. In this paper, parallel implementations of the PEEC method is presented for supercomputers featuring different architectures using ScaLA-PACK [9]. Implementation issues and examples are presented for the time-and frequency-domain PEEC method. It is shown