Analysis of saturated synchronous reactances of large turbine generator by considering cross-magnetizing reactances using finite elements

Ide, Kazumasa; Wakui, Shinichi; Shima, Kazuo; Takahashi, Miyoshi; Miyakawa, K.; Yagi, Y.

doi:10.1109/60.749149

Cited by 36 publications

(15 citation statements)

References 8 publications

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“…Instead of using synchronous reactances and induced voltage E 0 this model uses current dependent flux linkage functions in direct and quadrature axes to model armature reaction. Cross-magnetization effect is also not taken into account in classical electrical machine theory, but it is documented in literature [1]- [3] and it is taken into account in the proposed steady-state model of synchronous machine in this paper.…”

Section: Introductionmentioning

confidence: 99%

Steady-state synchronous machine model which incorporates saturation and cross-magnetization effects

Hanić

Vražić

Maljković

2013

4th International Conference on Power Engineering, Energy and Electrical Drives

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In this paper steady-state synchronous machine model which incorporates magnetic saturation and crossmagnetization is presented. Instead of using synchronous reactances and induced voltage E0 this model uses current dependent flux linkage functions in direct and quadrature axes to model armature reaction. If those functions are modeled as a polynomials of three independent variables which are armature current in direct and quadrature axis and field current, identification of the proposed model's parameters from load operation data becomes a linear problem. Paper also provides a method for calculation arbitrary steady-state load operation point based on the knowledge of the current dependent flux linkage functions. Proposed model, identification and calculation methods are validated and tested on 35 MVA, 10.5 kV, 50 Hz synchronous generator.

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Section: Introductionmentioning

confidence: 99%

Steady-state synchronous machine model which incorporates saturation and cross-magnetization effects

Hanić

Vražić

Maljković

2013

4th International Conference on Power Engineering, Energy and Electrical Drives

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“…A CCURATE determination of saturated inductances of synchronous machines by finite elements has been studied extensively [1]- [7]. On the other hand, not only accuracy of calculations but also appropriate determination of configurations of stator and rotor cores to meet the machine specifications are needed for electrical designs.…”

Section: Introductionmentioning

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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“…Considering only saliency, values of self and mutual reactance are largest on the d-axis, and are smallest on the q-axis. At the presence of the saturation considering cross-magnetization phenomenon the equation given in [1], based on [3], is get modified as…”

Section: A Dq Axis Equations Considering Magnetic Saturationmentioning

confidence: 99%

“…It is seen that equivalent synchronous reactances are smaller than conventional synchronous reactances with higher load because mutual reactance between d-and q-axis circuits becomes large. [1], the conventional equation for the machine voltage and flux linkages in dq -axis is modified, the equivalent equation is given.…”

Section: Introductionmentioning

confidence: 99%

“…Use of unsaturated and saturated reactances is widely applied to current electric design and power system simulation, though the distinction between unsaturated and saturated values is a classical expression of reactance variation affected by magnetic saturation [1]. Although the state space model is provided with an equivalent circuit and magnetic saturation [4], the cross-coupling phenomenon is not considered.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Saturated Synchronous Machine considering d-q Axis Coupling Reactance

Singh¹,

Chandel²,

Kumar³

2017

Annals of Computer Science and Information Systems

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Analysis of saturated synchronous reactances of large turbine generator by considering cross-magnetizing reactances using finite elements

Cited by 36 publications

References 8 publications

Steady-state synchronous machine model which incorporates saturation and cross-magnetization effects

Steady-state synchronous machine model which incorporates saturation and cross-magnetization effects

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

Analysis of Saturated Synchronous Machine considering d-q Axis Coupling Reactance

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