TY - GEN
T1 - Design of Shaped Electric Machine Windings to Reduce Ohmic Losses
AU - Acevedo, Israel Luna
AU - Osama, Mohamed
AU - Filusch, David
AU - Herzog, Hans Georg
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This work focuses on ohmic loss analysis of permanent magnet synchronous machines with fractional-slot concentrated windings. A trend is followed from published research, where coils are produced with each turn having a distinct shape, enabled by unconventional winding manufacturing technology. The physical principles of power loss within stator windings are described, as it is the foundation to then analyze several shaped coils. These are studied using finite element analysis on two surface permanent magnet synchronous machines, having single and double-layer windings and both open and semi-closed slots. A trade-off is observed between the DC and AC loss for different slot filling factors as the frequency ranges. It is demonstrated how a one-dimensional model of conductors in a slot can be setup as an optimization problem that yields an improved solution for the individual conductor heights. In addition, a FEA-based algorithm is used to shape individual conductors of a coil in the active-winding to avoid regions within the slots that would be sources of high power loss. Overall, it is found that for higher filling factors, the combination of both shaping methods produced the best results on both machines.
AB - This work focuses on ohmic loss analysis of permanent magnet synchronous machines with fractional-slot concentrated windings. A trend is followed from published research, where coils are produced with each turn having a distinct shape, enabled by unconventional winding manufacturing technology. The physical principles of power loss within stator windings are described, as it is the foundation to then analyze several shaped coils. These are studied using finite element analysis on two surface permanent magnet synchronous machines, having single and double-layer windings and both open and semi-closed slots. A trade-off is observed between the DC and AC loss for different slot filling factors as the frequency ranges. It is demonstrated how a one-dimensional model of conductors in a slot can be setup as an optimization problem that yields an improved solution for the individual conductor heights. In addition, a FEA-based algorithm is used to shape individual conductors of a coil in the active-winding to avoid regions within the slots that would be sources of high power loss. Overall, it is found that for higher filling factors, the combination of both shaping methods produced the best results on both machines.
KW - AC loss
KW - DC loss
KW - FEA
KW - FSCW
KW - PMSM
UR - http://www.scopus.com/inward/record.url?scp=85183463355&partnerID=8YFLogxK
U2 - 10.1109/EDPC60603.2023.10372159
DO - 10.1109/EDPC60603.2023.10372159
M3 - Conference contribution
AN - SCOPUS:85183463355
T3 - 2023 13th International Electric Drives Production Conference, EDPC 2023 - Proceedings
BT - 2023 13th International Electric Drives Production Conference, EDPC 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th International Electric Drives Production Conference, EDPC 2023
Y2 - 29 November 2023 through 30 November 2023
ER -