TY - GEN
T1 - Accurate Analytical Eddy Current Loss Calculation in Hairpin Windings
AU - Bezerra, Danielly Lima
AU - Golovanov, Dmitry
AU - Zou, Tianjie
AU - Huang, Hailin
AU - Sergentanis, Grigorios
AU - Rocca, Antonino La
AU - Cairns, Alasdair
AU - Gerada, Chris
AU - Majer, Jan
AU - Al-Tayie, Jay
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper explores the use of the Sub-Domain Method (SDM) for calculating power loss from eddy currents in hairpin windings. The model uses polar coordinates and discrete boundary conditions to suit the rectangular geometry of hairpin stators. It accurately computes the current density distribution from skin and proximity effects due to the armature reaction field, proving to be a valuable tool in optimization routines. The proposed model is capable of handling different conductor sizes, layer numbers, and single-phase and dual-phase slot arrangements, found in full-pitch and short-pitch winding configurations, respectively. Single-slot comparisons with Finite Element Method (FEM) simulations show that the tool delivers comprehensive, flexible, and accurate results; the difference for the total power loss between the analytical model and FEM at 1500 Hz stays under 1.03% relative error.
AB - This paper explores the use of the Sub-Domain Method (SDM) for calculating power loss from eddy currents in hairpin windings. The model uses polar coordinates and discrete boundary conditions to suit the rectangular geometry of hairpin stators. It accurately computes the current density distribution from skin and proximity effects due to the armature reaction field, proving to be a valuable tool in optimization routines. The proposed model is capable of handling different conductor sizes, layer numbers, and single-phase and dual-phase slot arrangements, found in full-pitch and short-pitch winding configurations, respectively. Single-slot comparisons with Finite Element Method (FEM) simulations show that the tool delivers comprehensive, flexible, and accurate results; the difference for the total power loss between the analytical model and FEM at 1500 Hz stays under 1.03% relative error.
KW - AC losses
KW - analytical model
KW - eddy currents
KW - hairpin windings
KW - sub-domain model
UR - https://www.scopus.com/pages/publications/105027551761
U2 - 10.1109/ECCE-Europe62795.2025.11238910
DO - 10.1109/ECCE-Europe62795.2025.11238910
M3 - Conference contribution
AN - SCOPUS:105027551761
T3 - 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025 - Proceedings
BT - 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025
Y2 - 31 August 2025 through 4 September 2025
ER -