EFFECT OF NUMBER OF ROTOR POLES ON AC LOSSES OF PERMANENT MAGNET MACHINES HAVING TWO SEPARATE STATORS

CC Awah; OI Okoro

doi:10.4314/njt.364.1484

EFFECT OF NUMBER OF ROTOR POLES ON AC LOSSES OF PERMANENT MAGNET MACHINES HAVING TWO SEPARATE STATORS

Authors

CC Awah DEPT. OF ELECTRICAL & ELECTRONICS ENGR., MICHAEL OKPARA UNIV. OF AGRIC, UMUDIKE, ABIA STATE, NIGERIA
OI Okoro DEPT. OF ELECTRICAL & ELECTRONICS ENGR., MICHAEL OKPARA UNIV. OF AGRIC, UMUDIKE, ABIA STATE, NIGERIA

DOI:

https://doi.org/10.4314/njt.364.1484

Keywords:

core loss, efficiency, PM eddy current loss, PM flux linkage, power and torque

Abstract

A study on permanent magnet (PM) eddy current and core losses of dual-stator PM machines is investigated in this paper. The analyzed core losses include: the rotor core loss, stator core loss and the total core loss of the machines. Further, the effect of their different rotor pole number is also presented with quantitative comparison. Due to the relatively high electrical frequency of the analyzed 14-rotor pole machine, it gives the largest amount of PM eddy current loss. Similarly, the 13-pole machine exhibits the largest amount of total core loss amongst the compared machines. Although, the investigated machine having 4-rotor pole has a low core loss value, likely due to its low electrical frequency. However, it has the poorest efficiency amongst all, due to its very low output torque. Overall, largest torque density is obtained in the 13-pole machine at rated current condition.

http://dx.doi.org/10.4314/njt.v36i4.21

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Published

2017-09-29

Issue

Vol. 36 No. 4 (2017)

Section

Computer, Telecommunications, Software, Electrical & Electronics Engineering

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How to Cite

EFFECT OF NUMBER OF ROTOR POLES ON AC LOSSES OF PERMANENT MAGNET MACHINES HAVING TWO SEPARATE STATORS. (2017). Nigerian Journal of Technology, 36(4), 1145-1149. https://doi.org/10.4314/njt.364.1484