1999 Volume 119 Issue 3 Pages 399-404
In this paper, an evaluation factor of permanent magnet motors is enhanced by accounting effects of copper and iron losses as well. A new evaluation factor kM is obtained by the product of an old motor constant kMC and a modification factor ka which is calculated from iron loss ratio.
Next, the evaluation method is applied to permanent magnet motors with non-lap concentric windings. The results show that an improvement by increase of magnetic flux is reduced under consideration of iron losses and the evaluation factor kM is rapidly saturated over 0.7 tesla in air-gap magnetic induction.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan