Frequency-Dependent Bearing Voltage Model for Squirrel-Cage Induction Motors

Yea, Manje; Kim, Jingook; Han, Ki Jin

doi:10.1109/tie.2021.3082065

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…Parameters were extracted from the measurement results of common-mode impedance of winding 1 and commonmode impedance of winding 2, respectively. The expression of common-mode impedance Z cm-sw between a single set of winding and the frame is shown in Equation (14). In view of the large number of model parameters, the parameters of the same type in the two sets of windings are no longer distinguished.…”

Section: Common-mode Impedancementioning

confidence: 99%

“…However, the above lumped parameter model only includes the equivalent capacitance network formed by common mode inductance, eddy current resistance and stray capacitance, which cannot effectively reflect the changes of the impedance characteristics of the generator in different frequency bands, resulting in the bearing voltage and bearing current obtained by the model simulation cannot match the measured values. Some improved models take into account the influence of factors such as the frequency dependence of bearing voltage ratio (BVR) [14] and the influence of distributed impedance, connection mode and interturn parasitic parameters of stator winding [15][16][17], thereby improving the prediction accuracy of bearing voltage in the high-frequency range. However, it is also necessary to carry out special analysis and calculation for the specific structure of the generator to ensure the applicability of the model.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of high frequency bearing voltage for dual‐winding permanent magnet synchronous generators

Li,

Liu,

Zhang

et al. 2023

IET Electric Power Appl

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The modelling and analysis of high‐frequency bearing voltage are of great significance to the assessment and mitigation of the electrical erosion risk in wind power systems. However, the dual‐winding permanent magnet synchronous generator (DW‐PMSG), as one of the mainstream models in wind power industry, has not been specifically analysed for its bearing voltage modelling method in the existing research. The high frequency common mode equivalent circuit model of DW‐PMSG is established, and the effect of parasitic parameters between two sets of winding on bearing voltage is analysed. A model parameters extraction method based on differential evolution algorithm is proposed, and the range of parameters is estimated by finite element simulation and test results, which improves the search efficiency and solution accuracy. The accuracy of the proposed model is verified by the comparison of simulation and experimental results. On this basis, it is possible to conduct more in‐depth research on the bearing voltage and bearing currents of DW‐PMSG, and provide theoretical basis and simulation means for the design of suppression schemes.

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Section: Common-mode Impedancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling of high frequency bearing voltage for dual‐winding permanent magnet synchronous generators

Li,

Liu,

Zhang

et al. 2023

IET Electric Power Appl

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“…To investigate cause and influence factors of bearing voltage, a lot of models were proposed [8,9]. The stray capacitances between stator, rotor and windings are main components in these models.…”

Section: Introductionmentioning

confidence: 99%

Modelling and suppression of bearing voltage of wind turbine permanent magnet synchronous generators

Jia,

Liu,

et al. 2023

IET Electric Power Appl

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The problem of bearing current is common in wind power generation system, which leads to the attenuation of generator life and great economic losses. Bearing voltage of a 5.5 MW wind‐turbine permanent magnet synchronous generator is studied. The bearing voltage equivalent circuit is modelled by studying the internal system structure of the generator, and an extraction method of cable parameters, generator winding parameters and stray capacitance parameters based on experiments is proposed to simulate the system. A system test platform is built to test the common mode voltage, common mode current and bearing voltage, and the test results are compared with the simulation results in time domain and frequency domain. The result indicate that the common mode equivalent model can accurately simulate the actual bearing voltage. Finally, rotor flange insulation is adopted to suppress bearing voltage. The relationship between the design of rotor flange insulation with suppressing effect is discussed. Finally, an optimisation design method is presented for the proposed suppression scheme.

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On the Modeling of Bearing Voltage and Current in PWM Converter-fed Electric Machines Using Electromagnetic Finite Element Analysis

Han

Zhang

Kesgin

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Frequency-Dependent Bearing Voltage Model for Squirrel-Cage Induction Motors

Cited by 5 publications

References 28 publications

Modelling of high frequency bearing voltage for dual‐winding permanent magnet synchronous generators

Modelling of high frequency bearing voltage for dual‐winding permanent magnet synchronous generators

Modelling and suppression of bearing voltage of wind turbine permanent magnet synchronous generators

On the Modeling of Bearing Voltage and Current in PWM Converter-fed Electric Machines Using Electromagnetic Finite Element Analysis

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