Further Study on Analytical Model for Iron Losses of Permanent Magnet Machine with Bevelling Magnet

作者：Haoxin Wang, Guoqiang Li, L. H. Cao, Xuan Hong, Ruyi Wan · 发表于：Australian Journal of Electrical & Electronics Engineering · 年份：2010 · DOI：10.1080/1448837x.2010.11464269 · 被引用次数：2 · 研究领域：Electric Motor Design and Analysis、Magnetic Properties and Applications、Magnetic Bearings and Levitation Dynamics

This paper proposes bevelling magnet edges that can reduce iron losses in permanent magnet (PM) machines. The maximum flux density and time rate change of flux density in teeth and yoke are deduced, respectively, considering a random angle of bevelling magnet edges. The analytic models of the average eddy current and hysteresis loss in teeth and yoke are presented respectively. The torque ratio of bevelling 75° and right-angle magnet is 0.983, whereas the ratio of PM material required between two cases is 0.971. Experimental results were proposed to verify the analytic model of total iron losses.