Improved &lt;italic&gt;RLMC&lt;/italic&gt;-Circuit HF-Dependent Parameters Using FE-EM Computation Dedicated to Predict Fast Transient Voltage Along Insulated Windings

Radja, Nadia; Rachek, M.; Larbi, S.

doi:10.1109/temc.2017.2787619

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…The capacitances are computed by using an electrostatic FEM solver while the inductances and resistances use a magnetodynamic approach. This is a common procedure to obtain RLC parameters as shown in [20], [21], [25].…”

Section: Modelling Methods Descriptionmentioning

confidence: 99%

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Impedance Modeling Oriented Toward the Early Prediction of High-Frequency Response for Permanent Magnet Synchronous Machines

Sarrio

Chauvicourt

Gyselinck

et al. 2023

IEEE Trans. Ind. Electron.

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This paper presents and validates a method for early estimation of the high-frequency impedance response for a real Permanent Magnet Synchronous Machine (PMSM). The main contribution of this work lays on the simplicity of the data required to tackle the prediction, which do not require any experimental tuning or 3D simulations. The required inputs for the method are the 2D cross-section of the machine and the material characteristics of the conductors, insulation and iron laminations. An approach using the Finite Element Method (FEM) coupled with a circuit simulator is utilized to obtain the machine common-mode and differential-mode impedances over a broad frequency range. Experimental measurements are performed up to the resonance band to validate the methodology. In addition, the influence of the machine rotor and housing on the impedance curves is experimentally assessed. A machine with concentrated winding is used as a case study machine to test the model.

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Section: Modelling Methods Descriptionmentioning

confidence: 99%

“…This model was tested and validated on a simplified stator sample. Radja et al [20] focused on the usage of FEM to predict the transient voltage distribution in machine windings. The method considers skin and proximity effects in single conductors but no data about the influence of laminated iron cores was found.…”

Section: Introductionmentioning

confidence: 99%

Impedance Modeling Oriented Toward the Early Prediction of High-Frequency Response for Permanent Magnet Synchronous Machines

Sarrio

Chauvicourt

Gyselinck

et al. 2023

IEEE Trans. Ind. Electron.

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“…These circuits are described by per unit length parameters (i.e., series resistance and inductance, and shunt capacitance and conductance). Different physical representations are described in [12], [13]. Figure 1 shows the lumped-pi equivalent circuit of a coil with n slot conductors and m endwinding conductors.…”

Section: Interpretation Of Windingsmentioning

confidence: 99%

A Review of Broadband Frequency Techniques for Insulation Monitoring and Diagnosis in Rotating Electrical Machines

Ruiz-Sarrio,

Antonino-Daviu,

Navarro-Navarro

et al. 2024

IEEE Trans. on Ind. Applicat.

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Rotating electrical machines greatly suffer from insulation degradation and failure. The adoption of wide bandgap semiconductors in Variable-Frequency Drives (VFDs) hinder the utilization of traditional techniques such as on-line Partial Discharges (PD) to monitor and diagnose the insulation status and failure. Alternative techniques exploiting the broadband frequency behaviour of machine windings, and the increased high-frequency content of VFD excitation arise as a valid alternative. The present work provides a comprehensive analysis and review of cutting-edge broadband frequency techniques aimed to diagnose winding insulation degradation and faults. First, the broadband nature of machine windings is illustrated by explaining the per-turn equivalent circuit and the physical interpretation of its parameters. Then, the different insulation monitoring and diagnosis methods are thoroughly reviewed. The analysed methods include the Frequency Response Analysis (FRA) applied to rotating electrical machines, the analysis of Common Mode (CM) broadband impedance and parasitic capacitances, and methodologies based on the analysis of transient high-frequency current ringing. Specific focus is placed on the instrumentation, which often represents the main applicability limitations.

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“…First efforts were made with lumped parameter models for the high-frequency behavior prediction of an electrical machine, as given in [35,36], but they are useless for prediction in the design stage because the identification of the parameters in the proposed equivalent circuit is based on measurements. Further, multi-conductor-transmission line models, such as those presented in [30,32,[37][38][39], are widely accepted for modeling high-frequency machine behavior. According to the multi-conductor-transmission line, a conductor i coupled with a conductor j is modeled, as shown in Figure 8, by a self-resistance R ii , a self-inductance L ii , a capacitance C g to ground, a capacitance C k to conductor j, and a resistance R g and resistance R CM representing dielectric losses, which are usually neglected.…”

Section: Electrical Machine Modelmentioning

confidence: 99%

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

et al. 2022

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Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage patterns. It is of utmost importance not to consider the harmful current passage in the machine element as an isolated phenomenon but to take into account the whole drive system consisting of the machine elements, the electric motor and the connected power electronics. This publication works toward providing an overview of the state-of-the-art of research regarding electrical bearing currents.

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Improved <italic>RLMC</italic>-Circuit HF-Dependent Parameters Using FE-EM Computation Dedicated to Predict Fast Transient Voltage Along Insulated Windings

Cited by 8 publications

References 16 publications

Impedance Modeling Oriented Toward the Early Prediction of High-Frequency Response for Permanent Magnet Synchronous Machines

Impedance Modeling Oriented Toward the Early Prediction of High-Frequency Response for Permanent Magnet Synchronous Machines

A Review of Broadband Frequency Techniques for Insulation Monitoring and Diagnosis in Rotating Electrical Machines

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

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