Novel Analysis Method Using Analytical and Numerical Methods for AC Copper Loss of IPMSM Considering Inverter Carrier Harmonics

To analyze AC copper loss of the electric vehicle (EV) motors accurately, it is calculated using the finite element method (FEM) after extracting the inverter-fed current (IFC) by space vector PWM. However, the harmonic waves of the IFC are different at each operating point, it takes a long time to...

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Bibliographic Details
Published in2022 IEEE 20th Biennial Conference on Electromagnetic Field Computation (CEFC) pp. 1 - 2
Main Authors Woo, Min-Yeong, Jun, Sung-Bae, Park, Seah, Noh, Sihun, Jung, Seok-Won, Jung, Sang-Yong
Format Conference Proceeding
LanguageEnglish
Published IEEE 24.10.2022
Subjects
AC Copper Loss
AC motors
Analytical and Numerical Methods
Efficiency Map
Electric Vehicle Motors
Electric vehicles
Finite element analysis
Harmonic analysis
Inverter Carrier Harmonics
Inverters
IPMSM
Pulse width modulation
Space vehicles
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Summary:To analyze AC copper loss of the electric vehicle (EV) motors accurately, it is calculated using the finite element method (FEM) after extracting the inverter-fed current (IFC) by space vector PWM. However, the harmonic waves of the IFC are different at each operating point, it takes a long time to analyze AC copper loss using the FEM. Thus, it is difficult to calculate AC copper loss at the entire efficiency map. To overcome the problem, this paper proposes an AC copper loss calculation method according to i d , iq and operating speed by considering inverter carrier harmonics. Proposed method uses both analytical and numerical methods. The validity of the proposed method is proved by comparing of analysis time and accuracy between this method and the fully FEM.
DOI:10.1109/CEFC55061.2022.9940690