Comparison of Core Loss Characteristics of Interior PM and Flux-Switching PM Machines for EV Applications
Sprache des Titels:
Englisch
Original Buchtitel:
ECCE 2024
Original Kurzfassung:
This paper presents a comparative analysis of core
loss characteristics between two widely studied types of permanent
magnet (PM) machines: interior permanent magnet (IPM) and
flux-switching PM (FSPM) machines, designed for micro electric
vehicle (EV) applications. The primary objective is to enhance the
understanding of core losses influenced by complex flux density
waveforms and dc bias fields. The study first compares and tests
the most popular core loss calculation techniques, including
Fourier analysis and hysteresis-based models, using finite element
analysis (FEA) simulations for the two baseline PM machines. The
results demonstrate that the hysteresis-based modeling approach
more accurately accounts for minor loops and dc bias effects. Both
experimental measurements and FEA simulations indicate that
neglecting these factors can lead to significant underestimation of
core losses, up to 55% in experiments and 177% in simulations.
Additionally, the FSPMM exhibits larger core losses than the
IPMSM under the tested partial load conditions, highlighting the
importance of accurately predicting core losses in such machines.
Forschungs-