Finite Element Modeling of Large Turbine Generators; Calculations Versus Load Test Data

Dougherty, J. W.; Minnich, S. H.

doi:10.1109/tpas.1981.316987

Cited by 33 publications

(6 citation statements)

References 12 publications

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“…The similar inductance that corresponds to the effective field flux linkage under excitation at the air gap is defined as follows: (2) where denotes the circumferential electric angle from the -axis; is the axial length of the stator core; is the average radius at the air gap;…”

Section: Analysis Methodsmentioning

confidence: 99%

Analysis of leakage flux distributions in a salient-pole synchronous machine using finite elements

Shima

Ide

Takahashi

2003

IEEE Trans. On Energy Conversion

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It is important to understand the relationship between iron core configurations and leakage flux distributions to get a better design of synchronous machines. This paper presents a method for calculating the steady-and transient-state leakage flux distributions in salient-pole synchronous machines. The method provides information on leakage flux distributions that cannot be obtained by terminal quantities. The method analyzes the leakage inductances that properly represent the corresponding leakage fluxes. They are calculated using the gap flux distributions by finite elements with magnetic saturation. The calculated leakage inductances of a synchronous machine under various loads are also shown and the relationship between the inductances and magnetic saturation is discussed.

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Section: Analysis Methodsmentioning

confidence: 99%

Analysis of leakage flux distributions in a salient-pole synchronous machine using finite elements

Shima

Ide

Takahashi

2003

IEEE Trans. On Energy Conversion

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“…More recent work, applying finite elements analysis seems to be a promising field of work [30]. Extensive work applying this technique to obtain steady-state solutions [31], frequency response characteristics [32] and to derive saturation functions [33] from design data has shown good agreement with measured results. More work needs to be done though, in order to prove the consistency of the method to any particular design.…”

Section: Analysis Of Design Datamentioning

confidence: 99%

Review of synchronous generator parameters estimation and model identification

Ghomi

Sarem

2007

2007 42nd International Universities Power Engineering Conference

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In this article the review of synchronous generator parameter estimation and model identification presented. Synchronous generators play a very important role in the stability of power systems. A valid model for synchronous generators is essential for a reliable analysis of stability and dynamic performance. Almost three-quarters of a century after the first publications in this area, the subject is still a challenging and attractive research topic. There are many propositions for the determination of synchronous machine parameters. Among the modern techniques used are neural networks, finite elements, on-line and off-line statistical methods, frequency response, load rejection and others.

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“…The sinusoidal symmetrical steady‐state load conditions calculations for synchronous generators are analysed in [1–9]. However, in [1–8], authors analyse steady‐state load conditions by magneto‐static FE calculations only. It is known that the calculation of the load steady‐state conditions for synchronous generators requires iterative calculations [1–7].…”

Section: Introductionmentioning

confidence: 99%

“…However, in [1–8], authors analyse steady‐state load conditions by magneto‐static FE calculations only. It is known that the calculation of the load steady‐state conditions for synchronous generators requires iterative calculations [1–7]. The authors of [1–6] deal with iterative methods in general, reporting that some quantities should be iterated within the calculation process, but do not provide mathematically explicit description of iterative methods by giving iterative equations.…”

Section: Introductionmentioning

confidence: 99%

“…It is known that the calculation of the load steady‐state conditions for synchronous generators requires iterative calculations [1–7]. The authors of [1–6] deal with iterative methods in general, reporting that some quantities should be iterated within the calculation process, but do not provide mathematically explicit description of iterative methods by giving iterative equations. For example, the authors of [1, 4] propose the iteration of the armature and field current and the authors of [3, 6] propose the iteration of the calculation of reactances.…”

Section: Introductionmentioning

confidence: 99%

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Computationally efficient finite‐element‐based methods for the calculation of symmetrical steady‐state load conditions for synchronous generators

Hanić

Stipetić

Vražić

2014

IET Electric Power Applications

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This study presents an accurate and computationally efficient finite-element (FE) calculation and modelling methods for the simulation of symmetrical steady-state load conditions for synchronous generators. For that purpose, two iterative methods are presented, implemented and compared. Those are Newton's iterative method and the relaxation parameter iterative method, which were both applied to magneto-static and transient FEs simulations. Various methods for obtaining armature voltage and power angle are proposed and analysed from the computational efficiency and the accuracy point of view. All methods showed good convergence results for solving this particular problem. Calculation results were compared with measurements on two synchronous generators installed in power plants.

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Finite Element Modeling of Large Turbine Generators; Calculations Versus Load Test Data

Cited by 33 publications

References 12 publications

Analysis of leakage flux distributions in a salient-pole synchronous machine using finite elements

Analysis of leakage flux distributions in a salient-pole synchronous machine using finite elements

Review of synchronous generator parameters estimation and model identification

Computationally efficient finite‐element‐based methods for the calculation of symmetrical steady‐state load conditions for synchronous generators

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