Details
| Titel in Übersetzung | Analytical determination of the winding stator capacity for the prediction of high-frequency common mode current in electrical machines |
|---|---|
| Originalsprache | Deutsch |
| Seiten (von - bis) | 196–202 |
| Fachzeitschrift | Elektrotechnik und Informationstechnik (e+i) (Print) |
| Jahrgang | 137 |
| Ausgabenummer | 4-5 |
| Frühes Online-Datum | 16 Apr. 2020 |
| Publikationsstatus | Veröffentlicht - Aug. 2020 |
Abstract
The use of frequency converters provides easy variable speed operation of electric machines. However, parasitic and high-frequency phenomena occur in inverter-fed drives. As a result of the discrete switching states of the power transistors, the average of the three output voltages of the inverter is a common mode voltage which differs from zero. This common mode voltage is impressed into the motor winding by the inverter and causes a capacitive, high-frequency common mode current via the slot insulation. The winding stator capacity is composed of a slot and an end-winding portion. In this article, an analytical determination of the slot portion of the winding stator capacity is presented, which, in addition to the geometry of the conductor, takes into account the influence of materials with different permittivities. The determination of the slot portion of the winding stator capacity is based on the method of image charges. The method is validated by means of FEM simulations for different geometries and materials.
Schlagwörter
- circulating bearing currents, shaft voltage, traction motor, winding stator capacity
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
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in: Elektrotechnik und Informationstechnik (e+i) (Print), Jahrgang 137, Nr. 4-5, 08.2020, S. 196–202.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Analytische Ermittlung der Wicklung-Stator-Kapazität in elektrischen Maschinen zur Vorausberechnung des hochfrequenten Common-Mode-Stroms
AU - Stockbrügger, Jan Ole
AU - Ponick, Bernd
PY - 2020/8
Y1 - 2020/8
N2 - The use of frequency converters provides easy variable speed operation of electric machines. However, parasitic and high-frequency phenomena occur in inverter-fed drives. As a result of the discrete switching states of the power transistors, the average of the three output voltages of the inverter is a common mode voltage which differs from zero. This common mode voltage is impressed into the motor winding by the inverter and causes a capacitive, high-frequency common mode current via the slot insulation. The winding stator capacity is composed of a slot and an end-winding portion. In this article, an analytical determination of the slot portion of the winding stator capacity is presented, which, in addition to the geometry of the conductor, takes into account the influence of materials with different permittivities. The determination of the slot portion of the winding stator capacity is based on the method of image charges. The method is validated by means of FEM simulations for different geometries and materials.
AB - The use of frequency converters provides easy variable speed operation of electric machines. However, parasitic and high-frequency phenomena occur in inverter-fed drives. As a result of the discrete switching states of the power transistors, the average of the three output voltages of the inverter is a common mode voltage which differs from zero. This common mode voltage is impressed into the motor winding by the inverter and causes a capacitive, high-frequency common mode current via the slot insulation. The winding stator capacity is composed of a slot and an end-winding portion. In this article, an analytical determination of the slot portion of the winding stator capacity is presented, which, in addition to the geometry of the conductor, takes into account the influence of materials with different permittivities. The determination of the slot portion of the winding stator capacity is based on the method of image charges. The method is validated by means of FEM simulations for different geometries and materials.
KW - circulating bearing currents
KW - shaft voltage
KW - traction motor
KW - winding stator capacity
UR - http://www.scopus.com/inward/record.url?scp=85083767888&partnerID=8YFLogxK
U2 - 10.1007/s00502-020-00799-5
DO - 10.1007/s00502-020-00799-5
M3 - Artikel
VL - 137
SP - 196
EP - 202
JO - Elektrotechnik und Informationstechnik (e+i) (Print)
JF - Elektrotechnik und Informationstechnik (e+i) (Print)
SN - 0932-383X
IS - 4-5
ER -