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In this paper a non-linear second order circuit model of high temperature Sodium-Nickel Chloride batteries (SNBs) is presented. The aim is the development of an accurate model easily implementable in microgrids Energy Management System and suitable for their real-time control. The proposed model is based on the analysis of the experimental performance of a commercial 23.5 kWh SNB. In particular, the...
Sophisticated control techniques for electrically excited synchronous machines need precise, but easy models. Non-ideal characteristics may appear, if the machine shows multiple geometric and/or saturation induced saliencies. In contrast to the conventional modelling approach, a novel stator-oriented magnetic circuit approach is used to deduce a nonlinear machine model with time-variant parameters,...
Different models have been proposed for modeling the IV-characteristics of diodes. In this paper we present a simple model, which describes both the IV- and the temperature characteristics of a SOI-pin-diode and can be used for different diodes types. It is well known that the DC-characteristics of a diode can be approximated by the simple Shockley-equation. However, when a more exact modelling of...
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