Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2381-2388 |
| Seitenumfang | 8 |
| Fachzeitschrift | Electrical Engineering |
| Jahrgang | 102 |
| Ausgabenummer | 4 |
| Frühes Online-Datum | 15 Juni 2020 |
| Publikationsstatus | Veröffentlicht - Dez. 2020 |
Abstract
The number of inverter-fed motors is increasing due to the good controllability of the motor and the meanwhile low acquisition costs. The steep voltage slopes of the converters lead to an uneven voltage distribution along the winding and thus to voltage peaks between the conductors, which stresses the insulation. The voltage distribution can be predicted by means of equivalent circuit diagrams, which take into account the capacitive coupling between the conductors. This paper presents a novel approach for an analytical determination of the turn-to-turn capacitances, which, in addition to the geometry and the placement of the conductors, considers the influence of materials with different permittivities.The conductors are simulated by means of line charges discretely placed inside the electrodes and receptor points attached to the conductor surfaces. The capacitances are determined by means of the Maxwell capacitance matrix. The method is validated by means of FEM simulations for different geometries and materials.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
- Mathematik (insg.)
- Angewandte Mathematik
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in: Electrical Engineering, Jahrgang 102, Nr. 4, 12.2020, S. 2381-2388.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Analytical determination of the turn-to-turn capacitances for the prediction of voltage peaks in a PWM-fed motor winding
AU - Stockbrügger, Jan Ole
AU - Ponick, Bernd
PY - 2020/12
Y1 - 2020/12
N2 - The number of inverter-fed motors is increasing due to the good controllability of the motor and the meanwhile low acquisition costs. The steep voltage slopes of the converters lead to an uneven voltage distribution along the winding and thus to voltage peaks between the conductors, which stresses the insulation. The voltage distribution can be predicted by means of equivalent circuit diagrams, which take into account the capacitive coupling between the conductors. This paper presents a novel approach for an analytical determination of the turn-to-turn capacitances, which, in addition to the geometry and the placement of the conductors, considers the influence of materials with different permittivities.The conductors are simulated by means of line charges discretely placed inside the electrodes and receptor points attached to the conductor surfaces. The capacitances are determined by means of the Maxwell capacitance matrix. The method is validated by means of FEM simulations for different geometries and materials.
AB - The number of inverter-fed motors is increasing due to the good controllability of the motor and the meanwhile low acquisition costs. The steep voltage slopes of the converters lead to an uneven voltage distribution along the winding and thus to voltage peaks between the conductors, which stresses the insulation. The voltage distribution can be predicted by means of equivalent circuit diagrams, which take into account the capacitive coupling between the conductors. This paper presents a novel approach for an analytical determination of the turn-to-turn capacitances, which, in addition to the geometry and the placement of the conductors, considers the influence of materials with different permittivities.The conductors are simulated by means of line charges discretely placed inside the electrodes and receptor points attached to the conductor surfaces. The capacitances are determined by means of the Maxwell capacitance matrix. The method is validated by means of FEM simulations for different geometries and materials.
KW - Insulation stress
KW - Surge voltage distribution
KW - Traction motor
KW - Turn-to-turn capacitance
KW - Winding failure
UR - http://www.scopus.com/inward/record.url?scp=85086583980&partnerID=8YFLogxK
U2 - 10.1007/s00202-020-01036-0
DO - 10.1007/s00202-020-01036-0
M3 - Article
AN - SCOPUS:85086583980
VL - 102
SP - 2381
EP - 2388
JO - Electrical Engineering
JF - Electrical Engineering
SN - 0948-7921
IS - 4
ER -