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Efficient evaluation of the [Z] matrix with method of moment in grounding analysis by using adaptive spatial sampling approach

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6 Author(s)
Jun Zou ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Bo Zhang ; Jian Guo ; Jin-Liang He
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The design of grounding system often relies on the performance simulations. The evaluation of the current distribution of grounding system for many frequencies by using the method of moments (MoM) may take a long time since the impedance matrix must be recomputed at each new frequency. A multiobject adaptive spatial sampling approach is presented to construct the fitted model of the electric field intensity generated by a horizontal electric dipole. The [Z] matrix spatial interpolation technology with MoM is described to reduce the computational time needed for the transient characteristics analysis of a horizontal grounding system. The accuracy and computational time of the [Z] matrix interpolation method are compared with those of the direct MoM. The numerical examples show that the [Z] matrix spatial interpolation method can reduce the computation requirement effectively

Published in:

Electromagnetic Compatibility, IEEE Transactions on  (Volume:48 ,  Issue: 1 )

Date of Publication:

Feb. 2006

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