TY - GEN
T1 - Modeling of eddy current loss in the magnets of permanent magnet machines for hybrid and electric vehicle traction applications
AU - Ding, Xiaofeng
AU - Mi, Chris
PY - 2009
Y1 - 2009
N2 - The eddy current loss in the magnets of permanent magnet (PM) motors in a hybrid electric vehicle (HEV) and plugin HEV is usually not taken into consideration in traditional motor design and analysis. However, due to the high conductivity of the rare-earth magnet, neodymium-iron-boron (NdFeB), and slot/tooth harmonics, there is eddy current loss generated inside the magnets. This loss may not attribute very much to the efficiency of the motor, but the temperature-rise inside the magnets caused by this loss can lead to the unpredictable deterioration of the magnets. In addition, the output voltage of pulse-width-modulated (PWM) inverter contains abundant high frequency harmonics, which induce additional loss in the magnets. This paper presents the modeling and analysis of eddy current loss in surface-mounted-magnets of PM motors operated by PWM inverters for HEV/PHEV and electric vehicle traction applications. In order to evaluate the loss from pure sinusoidal and PWM inverter supply, an analytical method is implemented, in conjunction with time-stepped finite-element analysis (FEA). The simulation results validated the proposed model.
AB - The eddy current loss in the magnets of permanent magnet (PM) motors in a hybrid electric vehicle (HEV) and plugin HEV is usually not taken into consideration in traditional motor design and analysis. However, due to the high conductivity of the rare-earth magnet, neodymium-iron-boron (NdFeB), and slot/tooth harmonics, there is eddy current loss generated inside the magnets. This loss may not attribute very much to the efficiency of the motor, but the temperature-rise inside the magnets caused by this loss can lead to the unpredictable deterioration of the magnets. In addition, the output voltage of pulse-width-modulated (PWM) inverter contains abundant high frequency harmonics, which induce additional loss in the magnets. This paper presents the modeling and analysis of eddy current loss in surface-mounted-magnets of PM motors operated by PWM inverters for HEV/PHEV and electric vehicle traction applications. In order to evaluate the loss from pure sinusoidal and PWM inverter supply, an analytical method is implemented, in conjunction with time-stepped finite-element analysis (FEA). The simulation results validated the proposed model.
KW - Eddy current loss
KW - Finite element analysis (FEA)
KW - Permanent magnet synchronous motors (PMSM)
KW - Pulse-width-modulation (PWM)
KW - Rare-earth magnet
KW - Surface mounted magnets
UR - https://www.scopus.com/pages/publications/72149114854
U2 - 10.1109/VPPC.2009.5289816
DO - 10.1109/VPPC.2009.5289816
M3 - 会议稿件
AN - SCOPUS:72149114854
SN - 9781424426003
T3 - 5th IEEE Vehicle Power and Propulsion Conference, VPPC '09
SP - 419
EP - 424
BT - 5th IEEE Vehicle Power and Propulsion Conference, VPPC '09
T2 - 5th IEEE Vehicle Power and Propulsion Conference, VPPC '09
Y2 - 7 September 2009 through 10 September 2009
ER -