A new method for coupling finite element field solutions with external circuits and kinematics

Bedrosian, G.

doi:10.1109/20.250726

Cited by 68 publications

(30 citation statements)

References 3 publications

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“…where the term ∂V/∂z is the potential difference [4] measured at the far and near ends of conducting regions divided by the effective length of the conductor. It is this potential difference that allows the coupling of the field equations with the external devices connected to the machine terminals, as well as, the interconnection between different internal regions of the electromagnetic model.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Validity testing of third-order nonlinear models for synchronous generators

Arjona¹,

Escarela‐Perez²,

Espinosa-Pérez³

et al. 2009

Electric Power Systems Research

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Section: Numerical Simulationsmentioning

confidence: 99%

Validity testing of third-order nonlinear models for synchronous generators

Arjona¹,

Escarela‐Perez²,

Espinosa-Pérez³

et al. 2009

Electric Power Systems Research

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“…This approach is numerically implemented through the finite-element versions of winding potential differences, leading to conductivity like matrices. Alternative coupling methods based on similar principles are possible [20][21][22][23]. Nevertheless, they lead to different structures of systems of equations and, therefore, different methods of solutions may be necessary.…”

Section: Coupling With External Devicesmentioning

confidence: 99%

Performance evaluation of energy‐shaping approach controllers for synchronous generators using a finite‐element model

Escarela‐Perez

Espinosa-Pérez

Álvarez‐Ramírez

2004

Intl J Robust & Nonlinear

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SUMMARYUsually, power system stabilizer (PSS) design is usually made using low-order two-axis models. Remarkable robust characteristics and systematic construction can be obtained with the recent developments on energy-shaping approaches to the design of excitation control. However, the properties and performance of the resulting control designs are also evaluated using low-order equivalent-circuit models because large (i.e. industrial scale) synchronous machines are not readily available to designers and researches. This may lead to doubts about the controller behaviour under true operating conditions. The aim of this paper is to develop a finite-element model, derived from fundamental Maxwell equations, to simulate the dynamics of synchronous generators. Subsequently, the finite-element model is used to show that energy-shaping control designs, obtained with low-order models, keep their performance characteristics when applied to the actual machine. In this way, in order to circumvent the lack of the real machine, a very detailed finite-element model is developed to represent turbine generators connected to large power systems. The numerical model incorporates simulation of rotor motion, iron magnetic nonlinearity and eddy currents in the solid rotors of turbine generators.

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“…This may lead to extensive computer calculations. The other option is to utilize an indirect coupling, see for example Bedrosian [8], and let coupling parameters pass between the circuit model and the finite element model.…”

Section: Introductionmentioning

confidence: 99%