TY - JOUR
T1 - A Consideration of Efficiency and Power Factor of IPM-type Magnetic-Geared Motor
AU - Ito, K.
AU - Nakamura, K.
N1 - Funding Information:
This work was supported in part by the WISE Program for AI Electronics, Tohoku University and JSPS KAKENHI Grant Number 21J10759 and 21H01302.
Funding Information:
Acknowledgements This work was supported in part by the WISE Program for AI Electronics, Tohoku University and JSPS KAKENHI Grant Number 21J10759 and 1H2 01302.
Publisher Copyright:
© 2022, Magnetics Society of Japan. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Magnetic-geared motors (MGMs) have attracted attention since their torque density is superior to conventional electric motors. Among the types of MGMs, an interior permanent magnet (IPM) type has a feature of high efficiency because the IPM-type can reduce the eddy current loss in magnets. On the other hand, in the IPM-type MGM, the PM motor part and the MG part magnetically interact with each other, which is called the magnetic interaction. In a previous paper, the influence of the magnetic interaction on the output torque was investigated. However, the influence on the power factor and the efficiency has not been clarified yet. This paper studies the influence of the magnetic interaction on the power factor and the efficiency of the IPM-type MGM. The influence of the magnetic interaction on the power factor is discussed by deriving a voltage equation of IPM-type MGM. Moreover, the power factor and the efficiency are calculated and measured to clarify a suitable current phase from the viewpoint of a high-power-factor and high-efficiency drive.
AB - Magnetic-geared motors (MGMs) have attracted attention since their torque density is superior to conventional electric motors. Among the types of MGMs, an interior permanent magnet (IPM) type has a feature of high efficiency because the IPM-type can reduce the eddy current loss in magnets. On the other hand, in the IPM-type MGM, the PM motor part and the MG part magnetically interact with each other, which is called the magnetic interaction. In a previous paper, the influence of the magnetic interaction on the output torque was investigated. However, the influence on the power factor and the efficiency has not been clarified yet. This paper studies the influence of the magnetic interaction on the power factor and the efficiency of the IPM-type MGM. The influence of the magnetic interaction on the power factor is discussed by deriving a voltage equation of IPM-type MGM. Moreover, the power factor and the efficiency are calculated and measured to clarify a suitable current phase from the viewpoint of a high-power-factor and high-efficiency drive.
KW - Efficiency
KW - Magnetic interaction
KW - Magnetic-geared motor (MGM)
KW - Power factor
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U2 - 10.3379/msjmag.2201R004
DO - 10.3379/msjmag.2201R004
M3 - Article
AN - SCOPUS:85126928373
SN - 1882-2932
VL - 46
SP - 16
EP - 21
JO - Journal of the Magnetics Society of Japan
JF - Journal of the Magnetics Society of Japan
IS - 1
ER -