An Analytical Model for Detailed Transient Fault Analysis of Doubly-Fed Induction Machines

Maurer, Frederic; Nøland, Jonas Kristiansen

doi:10.1109/icem49940.2020.9270786

“…Steady constant torque was assumed before the short-circuit. Adapted from preliminary work [22]. in the SIMSEN numerical software environment using the parameters defined in Table II (i.e., handpicked simulation case study).…”

Section: Verification Of the Torque Equationsmentioning

confidence: 99%

“…The analytic expressions also provide frequency harmonic information, which can be effectively used to ensure that a severe transient might trigger no mechanical eigenmodes over the complete operating range of a large DFIM. Compared to [22], this paper added an experimental validation of the expression developed in the conference, provided a complete derivation of the equation set, and extended the range of use to smaller power machines (2 kVA and 11 kVA).…”

Section: Introductionmentioning

confidence: 99%

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines

Maurer¹,

Toftevaag²,

Nøland³

2021

Preprint

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0

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This paper presents the exact transient solution to the unbalanced and balanced faults in the doubly-fed induction machine (DFIM). Stator currents, rotor currents, and stator fluxes have been validated using simulation and experiment. The work is meant to strengthen and fasten the predictability of large DFIMs in the design stage to comply with mechanical constraints or grid fault issues. Moreover, the analytical approach reduces the computational costs of large-scale stability studies and is especially suited to the initial phase where a plethora design computations must be carried out for the DFIM before it is checked for its transient interaction with the power system. The possibility to dynamically estimate DFIM performance is simplified by original equations derived from first principles. First, a case study of a large 265.50 MVA DFIM is used to verify the proposed "large machine approximation" using simulation, achieving an exact match. Then, laboratory measurements were conducted on a 10.96 kVA and a 1.94 kVA DFIM to validate the transient current peaks predicted in the proposed analytic expressions for two-phase and three-phase faults, respectively.

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“…Other applications of transient models include DFIM controller improvements [21], as well as reducing the computational burden of transient stability studies [22]. This paper takes the transient domain a step further, with an earlier preliminary work already taken as a basis [23]. A complete set of dynamic equations for the induction machine was presented in [24], whereas the well-known expressions for an induction machine were already provided in [25].…”

Section: Introductionmentioning

confidence: 99%

“…The analytic expressions also provide frequency harmonic information, which can be effectively used to ensure that a severe transient might trigger no mechanical eigenmodes over the complete operating range of a large DFIM. Compared to [23], this paper added an experimental validation of the expression developed in the conference paper, provided a complete derivation of the equation set, and extended the range of use to smaller power machines (2 kVA and 11 kVA).…”

Section: Introductionmentioning

confidence: 99%

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly Fed Induction Machines

Maurer

¹

,

Toftevaag

²

,

Nland

³

2023

IEEE Trans. Ind. Electron.

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5

0

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This paper presents the exact transient solution to the unbalanced and balanced faults in the doubly-fed induction machine (DFIM). Stator currents, rotor currents, and stator fluxes have been validated using simulation and experiment. The work is meant to strengthen and fasten the predictability of large DFIMs in the design stage to comply with mechanical constraints or grid fault issues. Moreover, the analytical approach reduces the computational costs of large-scale stability studies and is especially suited to the initial phase, where a of plethora design computations must be carried out for the DFIM before it is checked for its transient interaction with the power system. The possibility to dynamically estimate the DFIM performance is simplified by original equations derived from first principles. First, case studies of two large 265 MVA DFIMs are used to verify the analytical approach, and to justify the proposed "large machine approximation" using simulation with an exact match. Finally, laboratory measurements were conducted on a 10.96 kVA and a 1.94 kVA DFIM to validate the transient current peaks predicted in the proposed analytic expressions for two-phase and three-phase faults, respectively.

show abstract

“…This paper takes the transient domain a step further, with an earlier preliminary work already taken as a basis [22]. A complete set of dynamic equations for the induction machine was presented in [23], whereas the well-known expressions for an induction machine were already provided in [24].…”

Section: Introductionmentioning

confidence: 99%

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines

Maurer¹,

Toftevaag²,

Nøland³

2021

Preprint

Self Cite

0

View full text Add to dashboard Cite

This paper presents the exact transient solution to the unbalanced and balanced faults in the doubly-fed induction machine (DFIM). Stator currents, rotor currents, and stator fluxes have been validated using simulation and experiment. The work is meant to strengthen and fasten the predictability of large DFIMs in the design stage to comply with mechanical constraints or grid fault issues. Moreover, the analytical approach reduces the computational costs of large-scale stability studies and is especially suited to the initial phase where a plethora design computations must be carried out for the DFIM before it is checked for its transient interaction with the power system. The possibility to dynamically estimate DFIM performance is simplified by original equations derived from first principles. First, a case study of a large 265.50 MVA DFIM is used to verify the proposed "large machine approximation" using simulation, achieving an exact match. Then, laboratory measurements were conducted on a 10.96 kVA and a 1.94 kVA DFIM to validate the transient current peaks predicted in the proposed analytic expressions for two-phase and three-phase faults, respectively.

show abstract

An Analytical Model for Detailed Transient Fault Analysis of Doubly-Fed Induction Machines

Cited by 3 publications

References 17 publications

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly Fed Induction Machines

An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines

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