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Home > Issues > SearchA Study on the Core Loss of SPWM Inverter Drive IPMSM considering High Frequency Harmonics
Journal of Magnetics, Volume 25, Number 3, 30 Sep 2020, Pages 335-340
Do-hyun Kim (Department of Electrical Engineering, Hanbat National University), Byeong-chul Lee (Department of Electrical Engineering, Hanbat National University), Cheon-ho Song (Department of Electrical Engineering, Hanbat National University), Ki-chan Kim * 
(Department of Electrical Engineering, Hanbat National University)
(Department of Electrical Engineering, Hanbat National University)
Abstract
In the paper, the core loss of SPWM inverter drive IPMSM is analyzed considering high frequency harmonics
caused by SPWM and field weakening control. The output current of SPWM inverter has many high frequency
harmonics at the field weakening region. The high frequency harmonics would affect the core loss on
each part such as the yoke, teeth, shoe, and rotor. Therefore, IPMSM core of double layer type is divided into 6
parts to analyze the core loss in each part. In order to calculate the core loss considering the harmonics, the
SPWM current is required. This is extracted by linking the SPWM inverter drive IPMSM. FEM analysis is
used to compare the core loss when sinusoidal current and SPWM current are applied. The result that which
part of the core is most affected is analyzed by FFT analysis applying the P.U. system.
caused by SPWM and field weakening control. The output current of SPWM inverter has many high frequency
harmonics at the field weakening region. The high frequency harmonics would affect the core loss on
each part such as the yoke, teeth, shoe, and rotor. Therefore, IPMSM core of double layer type is divided into 6
parts to analyze the core loss in each part. In order to calculate the core loss considering the harmonics, the
SPWM current is required. This is extracted by linking the SPWM inverter drive IPMSM. FEM analysis is
used to compare the core loss when sinusoidal current and SPWM current are applied. The result that which
part of the core is most affected is analyzed by FFT analysis applying the P.U. system.
Keywords: core loss; electric vehicles; field weakening control; harmonics; IPMSM; pulse width modulation
DOI: https://doi.org/10.4283/JMAG.2020.25.3.335
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