Novel Modeling Approach for Voltage Distribution within Automotive Electrical Machines

Hanisch, Lucas Vincent; Sun, Mingyuan; Henke, Markus

doi:10.1109/icem49940.2020.9271002

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…The specimens are subjected to electrical stress using either a commercial pulse or sinusoidal voltage generator [112], special surge voltage testers [47], or self-developed power electronics (half or full bridge) with SiC or gallium nitride (GaN) semiconductors [15], [73], which are the closest to real operation later. Each setup has different electrical characteristics, thus the comparability and reproducibility of the results are low.…”

Section: E Measurement Test Setup and Specimenmentioning

confidence: 99%

The Insulation Resilience of Inverter-Fed Low Voltage Traction Machines: Review, Challenges, and Opportunities

2022

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The use of wide bandgap (WBG) semiconductor devices, which enable higher switching slew rates, and the increase in DC link voltage, which provides system-wide advantages, exposes the winding system of traction machines to enhanced electrical stress. The resulting nonlinear voltage distribution along the motor winding favors partial discharges (PD), which in low voltage (LV) machines causes excessive damage to the insulation system, and premature failure can occur. A simple solution by increasing the enamel thickness of the wires leads on the one hand to a lower copper fill factor. On the other hand, this measure is not necessarily accompanied by an increase in electrical resilience in the case of pulsed voltage. It is therefore essential to understand the phenomenon of partial discharges, which is composed of a large number of processes and mechanisms, to be able to make an estimation of aging. The ultimate goal is to derive a lifetime model that links the dynamic load collectives -ideally in conjunction with the environmental stress influences -of a traction application to a usage-dependent and realistic prediction of the residual lifetime. To this end, this paper provides an overview of the current state of science and technology in this interdisciplinary topic by describing, with reference to high voltage (HV) technology/engineering, the design of the insulation system, the discharge physics, the degradation mechanisms, the statistical effects to be considered, and the partial discharge measurement methods.

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Section: E Measurement Test Setup and Specimenmentioning

confidence: 99%

The Insulation Resilience of Inverter-Fed Low Voltage Traction Machines: Review, Challenges, and Opportunities

2022

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“…End-winding sections and laminated iron core behavior were neglected in this work. The work presented in [22] describes a simplified method to predict machine terminal over-voltages by utilizing a 2D FEM approach, with no experimental validation. Ryu et al [23] developed a method for induction machine CM impedance estimation including the study of the variation of some design parameters.…”

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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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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Comparison of Insulation Capability of Round Wire and Hairpin Windings by Partial Discharge Measurements

Hanisch

Henke

2022

2022 12th International Electric Drives Production Conference (EDPC)

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Novel Modeling Approach for Voltage Distribution within Automotive Electrical Machines

Cited by 8 publications

References 11 publications

The Insulation Resilience of Inverter-Fed Low Voltage Traction Machines: Review, Challenges, and Opportunities

The Insulation Resilience of Inverter-Fed Low Voltage Traction Machines: Review, Challenges, and Opportunities

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

Comparison of Insulation Capability of Round Wire and Hairpin Windings by Partial Discharge Measurements

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