Transient Analysis of Cylindrical Synchronous Machine Taking Damper Winding Currents into Consideration.

Investigating NLG Architectures: taking style into consideration

In this paper we propose a methodology for investigating the relationship between architectures of natural language generation (NLG) systems and stylistic properties of texts. Biber's (1988) methodology is used to obtain both the characterisation of style of our corpus and the division of the corpus into sets of linguistically similar texts. These sets will be used for studying the architectura...

Estimation of Synchronous Generator Parameters Using an Observer for Damper Currents and a Graphical User Interface

This paper presents a method to identify synchronous generator parameters from online data. An observer for estimation of synchronous machine damper currents is designed. The observer-estimator is used in a Graphical User Interface (GUI) application. Possible internal machine fault conditions can be detected and remedial action can be undertaken. It is desired that an algorithm be developed suc...

Stabilizing Nonlinear Control Using Damper Currents Sliding Mode Observer of Synchronous Generator

In this article, a new observer-based nonlinear controller for excitation control of synchronous generator is presented. First, a nonlinear sliding mode observer for the synchronous machine damper currents is developed. Second, the existence of a control law for the complete seventh order model of a generator, which takes into account the stator dynamics as well as the damper effects, is proved...

Madras 3 Synchronous Generator Operation 3 . 1 Cylindrical Rotor Machine

Subgrid scale modeling taking the numerical error into consideration

Large eddy simulation (LES) is regarded as one of the most promising numerical methods to predict unsteady turbulent flows at high Reynolds number. In LES the flow field is decomposed into grid and subgrid scales. The grid scale (GS) flow field is computed numerically using discrete filtered Navier-Stokes equation with a model for the subgrid scale (SGS) stress. Therefore, the reliability of th...