DocumentCode :
3027172
Title :
Loss Analysis of Interior Permanent Magnet Motors Considering Carrier Harmonics and Magnet Eddy Currents Using 3-D FEM
Author :
Yamazaki, Katsumi ; Abe, Atsushi
Author_Institution :
Chiba Inst. of Technol., Chiba
Volume :
2
fYear :
2007
fDate :
3-5 May 2007
Firstpage :
904
Lastpage :
909
Abstract :
In this paper, we investigate losses of interior permanent magnet motors driven by PWM inverters using the 3-D finite element analysis, which can estimate the eddy current loss in the permanent magnet accurately. The calculated losses are compared with the measured results and the theoretical solution to verify the validity of the analysis. The method to decompose the electromagnetic field distribution into time-harmonic components is introduced in order to investigate the effects of the harmonic fields separately and to specify the main loss factors. The variation of the magnet eddy current loss due to the division of the magnet is also investigated. It is clarified that the eddy current loss in the permanent magnet is mainly produced by the carrier harmonics of the inverter and that the axial length of the divided magnet should be smaller than the skin depth of the eddy currents produced by the major harmonics for the loss reduction.
Keywords :
PWM invertors; eddy current losses; finite element analysis; harmonics suppression; permanent magnet motors; 3D FEM; PWM inverters; carrier harmonics; electromagnetic field distribution; finite element analysis; harmonics reduction; interior permanent magnet motors; loss reduction; magnet eddy current loss estimation; time-harmonic components; Eddy currents; Electromagnetic measurements; Finite element methods; Harmonic analysis; Loss measurement; Magnetic analysis; Magnetic field measurement; Magnetic separation; Permanent magnet motors; Pulse width modulation inverters; Interior permanent magnet synchronous motor; PWM inverter; carrier harmonics; finite element method; iron loss;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International
Conference_Location :
Antalya
Print_ISBN :
1-4244-0742-7
Electronic_ISBN :
1-4244-0743-5
Type :
conf
DOI :
10.1109/IEMDC.2007.382794
Filename :
4270768
Link To Document :
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