A generalized model of satureted synchronous machines

Tahan, Antoine; Kamwa, Innocent; Viarouge, P.; Ferfra, M.

doi:10.1016/0378-4754(95)00051-x

Cited by 4 publications

(6 citation statements)

References 14 publications

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“…If the q-axis magnetizing curve of an anisotropic synchronous machine is known, then the two-saturation factor approach can be used. The only available model (excluding the pure winding flux one) is the winding current state-space model [1], [2], [4], [6], [7]. System matrix of this model has the identical structure as the system matrix obtained using single saturation factor approach.…”

Section: Discussionmentioning

confidence: 99%

“…The magnetizing curve for the q-axis is usually not available and one then assumes that the degree of q-axis and d-axis saturation is the same. This approach leads to single saturation factor representation of saturation [3], [5], [10], [14], that requires conversion of an anisotropic synchronous machine into its isotropic equivalent [5], [7], [14]. Single saturation factor Manuscript method was adopted in [12], [13] for derivation of alternative models of the anisotropic synchronous machines and conversion of the anisotropic to isotropic machine was performed as defined in [14].…”

Section: Impact Of Dynamic Cross-saturation On Accuracy Of Saturated mentioning

confidence: 99%

“…A TRADITIONAL approach to magnetic saturation modeling in orthogonal d-q axis models of synchronous machines is based on selection of either all the winding currents [1]- [7], or all the winding flux linkages as state-space variables [1], [8]- [10]. A number of alternative saturated synchronous machine models, with differing sets of state-space variables, have been developed recently, at first for a smooth air-gap synchronous machine [11] and then for a five winding [12] and a six winding [13] synchronous machine with magnetic anisotropy.…”

Section: Impact Of Dynamic Cross-saturation On Accuracy Of Saturated mentioning

confidence: 99%

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Impact of dynamic cross-saturation on accuracy of saturated synchronous machine models

Levi

Leví

2000

IEEE Trans. On energy Conversion

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Cross-saturation effect in synchronous machines has been a subject of considerable attention in recent years. Inclusion of the cross-saturation in the machine model has two consequences. The first one, called here 'steady-state cross-saturation', consists of dependence of the steady-state d-q axis magnetizing inductances on the currents in both axes. The second one, termed here 'dynamic cross-saturation', is the existence of nonzero elements in the system matrix, that describe cross coupling between d-and q-axis. Dynamic cross-saturation appears in all the saturated machine models, regardless of the selected set of state-space variables, with the exception of the winding flux linkage state-space model. The aim of this paper is to compare behavior of various models when dynamic cross-saturation is neglected. It is shown that the impact of dynamic cross-saturation on accuracy depends on the selected set of state-space variables. In majority of cases omission of dynamic cross-saturation leads to very inaccurate results. However, it is found that for one particular class of models omission of dynamic cross-saturation has practically no impact on accuracy. These models therefore fully describe the complete saturation effect by means of only continuous variation of the d-q axis magnetizing inductances.

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Section: Discussionmentioning

confidence: 99%

Section: Impact Of Dynamic Cross-saturation On Accuracy Of Saturated mentioning

confidence: 99%

Section: Impact Of Dynamic Cross-saturation On Accuracy Of Saturated mentioning

confidence: 99%

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Impact of dynamic cross-saturation on accuracy of saturated synchronous machine models

Levi

Leví

2000

IEEE Trans. On energy Conversion

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“…Whether coupling between the -and -axis is considered or not, the representation of saturation remains limited to a correction of the main inductances as a function of the magnetizing currents. When applied correctly, the use of saturation factors [1], [3], [9] compensates at full satisfaction for saturation under static circumstances, but the available literature is very limited, concerning the influence of saturation on the dynamic behavior [10].…”

Section: Introductionmentioning

confidence: 99%

Estimation of a global synchronous machine model using a multiple-input multiple-output estimator

Dedene

Pintelon

Lataire

2003

IEEE Trans. On Energy Conversion

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In this paper, the measurement results of a series of standstill frequency-response (SSFR) tests, performed at different magnetization levels, are discussed. For each data set, an individual -axis model is estimated, which allows seeing the variation of the different parameters as a function of saturation. A global estimator is presented which uses the different data sets to estimate one global model, including the field-to-armature turns ratio. The global estimator is based on an impedance matrix representation of the synchronous machine. This global estimator assumes that only the -axis main inductance is saturation dependent. The individual estimated models justify this assumption. Finally, the relative additional error of the global estimated -axis equivalent circuit with the individual estimated ones is studied.The measurement results discussed in this paper are obtained on a four-pole 130-kVA synchronous machine.

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“…Malgré le développement récent de modèles plus élaborés d'étude de la machine synchrone [1,2,3,4], les modèles traditionnels comme ceux de Behn Eschenburg et de Potier continuent de présenter un intérêt certain sur les plans pédagogique et pratique. En effet, ces derniers permettent d'une part, d'introduire plus simplement l'étude de la machine, et d'autre part, de prédéterminer avec une bonne précision, ses conditions de fonctionnement en charge.…”

Section: Introductionunclassified

Détermination analytique des paramètres de Potier d'une machine synchrone par la méthode des pentes

Loum

Haba

2009

J3eA

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A generalized model of satureted synchronous machines

Cited by 4 publications

References 14 publications

Impact of dynamic cross-saturation on accuracy of saturated synchronous machine models

Impact of dynamic cross-saturation on accuracy of saturated synchronous machine models

Estimation of a global synchronous machine model using a multiple-input multiple-output estimator

Détermination analytique des paramètres de Potier d'une machine synchrone par la méthode des pentes

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