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- W2891977249 abstract "Abstract Engineering approximations of physical systems sometimes produce models in which real-valued model-based physical-distances are added to complex-valued distances and/or (for electrical systems), real-valued current/charge image intensities are replaced with complex-valued quantities. These models are arrived at often using ad hoc approximations that allow infinite integrals or series to be approximated in closed form. Arriving at accurate ad hoc approximations in a compatible analytic form is often the difficult step in the derivation of these approximations. In this paper, we show that this difficult ad hoc step can be replaced for many classes of functions with the use of analytic continuation via Pade approximants, along with some reasonable engineering judgement. We apply our approach to several existing approximations in the electrical engineering field (overhead transmission line impedance, underground cable impedance and Green’s functions used in ground potential rise calculations) and show that these approximations can be derived elegantly, without the need for grand leaps of insight, and provide a basis for both distance parameters and current/charge intensities that are complex-valued." @default.
- W2891977249 created "2018-09-27" @default.
- W2891977249 creator A5003944945 @default.
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- W2891977249 date "2019-02-01" @default.
- W2891977249 modified "2023-09-24" @default.
- W2891977249 title "Analytic continuation as the origin of complex distances in impedance approximations" @default.
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- W2891977249 doi "https://doi.org/10.1016/j.ijepes.2018.09.022" @default.
- W2891977249 hasPublicationYear "2019" @default.
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