Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | 2016 22nd International Conference on Electrical Machines, ICEM 2016 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 890-896 |
| Number of pages | 7 |
| ISBN (electronic) | 9781509025381 |
| Publication status | Published - 2 Nov 2016 |
| Event | 22nd International Conference on Electrical Machines, ICEM 2016 - Lausanne, Switzerland Duration: 4 Sept 2016 → 7 Sept 2016 |
Abstract
Salient-pole synchronous machines (SPSYM) combine a high power density with high efficiency over a wide speed range. In contrast to permanent magnet synchronous machines (PMSM), the field excitation can be controlled actively. Due to the adjustable excitation, flux-weakening is possible with reduced losses. The efficiency at partial load and at high speed can be improved. Furthermore, faults, such as short circuit currents, are easier to handle. These attributes qualify SPSYM as a promising alternative to PMSM for electrically powered vehicles. In order to achieve this additional degree of freedom, electrical power needs to be transferred to the rotating part of the motor. Established slip ring transmission systems are sensitive to ambient conditions such as humidity or impure contacts. Moreover, the limited reliability of contact based systems amplifies the desire to develop contactless transmission systems. In this paper, the electromagnetic design of a rotary transformer with a ferrite core intended to transfer the excitation current is discussed. High frequency effects (skin- and proximity effect), leakage inductances and the waveform of the transformer currents are considered in an automated design process. This process combines analytical calculations and 2D FEM simulations to determine an optimal design. In a final step, the calculated results are compared with measurements performed on a prototype.
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Engineering(all)
- Mechanical Engineering
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Proceedings: 2016 22nd International Conference on Electrical Machines, ICEM 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 890-896 7732631.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Rotary transformer with ferrite core for brushless excitation of synchronous machines
AU - Vip, Stephan-Akash
AU - Weber, Jan-Niklas
AU - Rehfeldt, Alexander
AU - Ponick, Bernd
N1 - Publisher Copyright: © 2016 IEEE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/11/2
Y1 - 2016/11/2
N2 - Salient-pole synchronous machines (SPSYM) combine a high power density with high efficiency over a wide speed range. In contrast to permanent magnet synchronous machines (PMSM), the field excitation can be controlled actively. Due to the adjustable excitation, flux-weakening is possible with reduced losses. The efficiency at partial load and at high speed can be improved. Furthermore, faults, such as short circuit currents, are easier to handle. These attributes qualify SPSYM as a promising alternative to PMSM for electrically powered vehicles. In order to achieve this additional degree of freedom, electrical power needs to be transferred to the rotating part of the motor. Established slip ring transmission systems are sensitive to ambient conditions such as humidity or impure contacts. Moreover, the limited reliability of contact based systems amplifies the desire to develop contactless transmission systems. In this paper, the electromagnetic design of a rotary transformer with a ferrite core intended to transfer the excitation current is discussed. High frequency effects (skin- and proximity effect), leakage inductances and the waveform of the transformer currents are considered in an automated design process. This process combines analytical calculations and 2D FEM simulations to determine an optimal design. In a final step, the calculated results are compared with measurements performed on a prototype.
AB - Salient-pole synchronous machines (SPSYM) combine a high power density with high efficiency over a wide speed range. In contrast to permanent magnet synchronous machines (PMSM), the field excitation can be controlled actively. Due to the adjustable excitation, flux-weakening is possible with reduced losses. The efficiency at partial load and at high speed can be improved. Furthermore, faults, such as short circuit currents, are easier to handle. These attributes qualify SPSYM as a promising alternative to PMSM for electrically powered vehicles. In order to achieve this additional degree of freedom, electrical power needs to be transferred to the rotating part of the motor. Established slip ring transmission systems are sensitive to ambient conditions such as humidity or impure contacts. Moreover, the limited reliability of contact based systems amplifies the desire to develop contactless transmission systems. In this paper, the electromagnetic design of a rotary transformer with a ferrite core intended to transfer the excitation current is discussed. High frequency effects (skin- and proximity effect), leakage inductances and the waveform of the transformer currents are considered in an automated design process. This process combines analytical calculations and 2D FEM simulations to determine an optimal design. In a final step, the calculated results are compared with measurements performed on a prototype.
UR - http://www.scopus.com/inward/record.url?scp=85007356390&partnerID=8YFLogxK
U2 - 10.1109/icelmach.2016.7732631
DO - 10.1109/icelmach.2016.7732631
M3 - Conference contribution
AN - SCOPUS:85007356390
SP - 890
EP - 896
BT - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd International Conference on Electrical Machines, ICEM 2016
Y2 - 4 September 2016 through 7 September 2016
ER -