Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 358 |
| Fachzeitschrift | ENERGIES |
| Jahrgang | 15 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 4 Jan. 2022 |
Abstract
This article describes a practical method for predicting the distribution of electric potential inside an electrical machine’s winding based on design data. It broadens the understanding of winding impedance in terms of inter-winding behavior and allows to properly design an electrical machine’s insulation system during the development phase. The predictions are made based on an frequency-dependent equivalent circuit of the electrical machine which is validated by measurements in the time domain and the frequency domain. Element parameters for the equivalent circuit are derived from two-dimensional field simulations. The results demonstrate a non-uniform potential distribution and demonstrate that the potential difference between individual turns and between turns and the stator core exceeds the expected values. The findings also show a link between winding impedance and potential oscillations inside the winding. Additionally, the article provides an overview of the chronological progression of turn-based models and shows how asynchronous multiprocessing is used to accelerate the solution process of the equivalent circuit.
ASJC Scopus Sachgebiete
- Energie (insg.)
- Erneuerbare Energien, Nachhaltigkeit und Umwelt
- Energie (insg.)
- Feuerungstechnik
- Energie (insg.)
- Energieanlagenbau und Kraftwerkstechnik
- Energie (insg.)
- Energie (sonstige)
- Mathematik (insg.)
- Steuerung und Optimierung
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
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in: ENERGIES, Jahrgang 15, Nr. 1, 358, 04.01.2022.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Method to Predict the Non-Uniform Potential Distribution in Random Electrical Machine Windings under Pulse Voltage Stress
AU - Hoffmann, Alexander
AU - Ponick, Bernd
N1 - Funding Information: Funding: This research was funded by the Federal Ministry for Economic Affairs and Energy (BMWi) based on a decision by the German Bundestag and DLR Projektträger (DLR-PT) under grant number Speed4E 01MY17003B.
PY - 2022/1/4
Y1 - 2022/1/4
N2 - This article describes a practical method for predicting the distribution of electric potential inside an electrical machine’s winding based on design data. It broadens the understanding of winding impedance in terms of inter-winding behavior and allows to properly design an electrical machine’s insulation system during the development phase. The predictions are made based on an frequency-dependent equivalent circuit of the electrical machine which is validated by measurements in the time domain and the frequency domain. Element parameters for the equivalent circuit are derived from two-dimensional field simulations. The results demonstrate a non-uniform potential distribution and demonstrate that the potential difference between individual turns and between turns and the stator core exceeds the expected values. The findings also show a link between winding impedance and potential oscillations inside the winding. Additionally, the article provides an overview of the chronological progression of turn-based models and shows how asynchronous multiprocessing is used to accelerate the solution process of the equivalent circuit.
AB - This article describes a practical method for predicting the distribution of electric potential inside an electrical machine’s winding based on design data. It broadens the understanding of winding impedance in terms of inter-winding behavior and allows to properly design an electrical machine’s insulation system during the development phase. The predictions are made based on an frequency-dependent equivalent circuit of the electrical machine which is validated by measurements in the time domain and the frequency domain. Element parameters for the equivalent circuit are derived from two-dimensional field simulations. The results demonstrate a non-uniform potential distribution and demonstrate that the potential difference between individual turns and between turns and the stator core exceeds the expected values. The findings also show a link between winding impedance and potential oscillations inside the winding. Additionally, the article provides an overview of the chronological progression of turn-based models and shows how asynchronous multiprocessing is used to accelerate the solution process of the equivalent circuit.
KW - Differential mode
KW - Electrical machine
KW - Frequency inverter
KW - Frequency response
KW - HF impedance
KW - HF lumped parameter model
KW - HF modeling
KW - Insulation stress
KW - Potential distribution
KW - Random-wound
KW - Voltage stress
KW - Wide-bandgap
UR - http://www.scopus.com/inward/record.url?scp=85122212770&partnerID=8YFLogxK
U2 - 10.3390/en15010358
DO - 10.3390/en15010358
M3 - Article
AN - SCOPUS:85122212770
VL - 15
JO - ENERGIES
JF - ENERGIES
SN - 1996-1073
IS - 1
M1 - 358
ER -