A Machine Winding Model for Switching Transient Studies Using Network Synthesis

Guardado, J.L.; Flores, Joel; Venegas, V.; Naredo, J.L.; Uribe, Felipe

doi:10.1109/tec.2005.845534

Cited by 35 publications

(31 citation statements)

References 10 publications

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“…Comparison between simulated and experimental measurements showed that capacitance is almost independent of the frequency over 100 kHz. The same conclusion is given in [13] [15]. However, the resistance is found strongly dependent on the frequency.…”

Section: Effect Of Frequencysupporting

confidence: 81%

Effect of the short-term temperature changes on Diagnostic Indicator in online insulation monitoring by parametric identification

Ferdjallah-kherkhachi

Schaeffer

Loron

et al. 2015

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE)

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Electrical generators of offshore wind or tidal current turbines are exposed to harsh marine and operating conditions. Predictive maintenance is therefore a key issue for the competitiveness of these energy generation systems. Generally speaking, the predictive maintenance is based on the monitoring of a Diagnostic Indicator (DI): the interpretation of its value or drift is used for the optimal planning of the corrective maintenance. In this work, we present briefly our new online monitoring technique of electrical machine winding insulation. This model-based approach consists in monitoring the drift of a DI built from the in-situ estimation of high-frequency electrical model parameters. The involved model structures are derived from the RLC network modeling of the winding insulation, with more or less lumped parameters. In the second part of the work, we investigate the effects of temperature changes on the estimated parameters of diagnostic models. A 1.5 kW low power wound stator is exposed to different temperature levels, from 30°C to 160°C, and for each temperature a series of experimental acquisitions is realized. Identification results show that resistance and inductance of a simple HF model structure are almost independent of temperature changes, while insulation capacitance increases with temperature increases: at 160°C it is 8% higher than its initial value at room temperature.

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Section: Effect Of Frequencysupporting

confidence: 81%

Effect of the short-term temperature changes on Diagnostic Indicator in online insulation monitoring by parametric identification

Ferdjallah-kherkhachi

Schaeffer

Loron

et al. 2015

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE)

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“…Other more accurate approaches [18,19] adopt a multiconductor transmission lines (MTL) model which allows to take into account the spatial distribution of the voltage inside the system, but are not intended for providing information on the bearing currents. For this reason, based on an MTL model [20] which takes into consideration also the frequency dependent joule losses, the authors have developed a MTL model of the motor winding, able to predict the voltages across the rotor shaft and to estimate the currents flowing through the bearings when the machine is fed by a single-phase ramp voltage with variable slew rate [21,22].…”

Section: Bearing Voltage: Prediction Modelsmentioning

confidence: 99%

Simulation of the Bearing Voltage in an Inverter-Fed Induction Motor by a Full Three Phase Multi Conductor Transmission Line Model

Vivo¹,

Lamberti²,

Tucci³

et al. 2013

PIER B

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Abstract-An accurate numerical model, based on multiconductor transmission lines (MTL) able to evaluate the voltage dynamics across the motor bearings and associated currents of an inverter-fed motor is presented. A full three phase stator winding of the wound type of a high power traction motor is considered in the proposed analysis. The different regions of the motor are modeled as suitable connections of lossy MTL which are then studied in the time domain. The per unit length characteristic matrices describing the MTL are accurately calculated by a FEM based software. The effects of the rise time of the input voltage and the length of the feeder cables are discussed. The reliability of the numerical results achieved by means of the MTL model is checked by performing a comparison with those obtained by considering a lumped parameter equivalent circuit.

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“…Furthermore, a paper presents a three-phase time domain model for the winding of electrical machines, suitable for calculating the switching transient in motor banks. The computer model takes into account the machine winding design and construction specifications to calculate the winding electrical parameters at high frequencies [15].…”

Section: Introductionmentioning

confidence: 99%

Study of propagation phenomena in three-phase form wound machines operating at medium and high frequency

Leva

2011

Electric Power Systems Research

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A Machine Winding Model for Switching Transient Studies Using Network Synthesis

Cited by 35 publications

References 10 publications

Effect of the short-term temperature changes on Diagnostic Indicator in online insulation monitoring by parametric identification

Effect of the short-term temperature changes on Diagnostic Indicator in online insulation monitoring by parametric identification

Simulation of the Bearing Voltage in an Inverter-Fed Induction Motor by a Full Three Phase Multi Conductor Transmission Line Model

Study of propagation phenomena in three-phase form wound machines operating at medium and high frequency

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