馬達智財聯盟 Motor Intellectual Property Alliance

作者	Chinweze U. Ubadigha, Mi-Ching Tsai, Senior Member, IEEE and Po-Wei Huang
摘要	In this paper, an in-depth analysis is conducted to ascertain the influence of different structural shapes of the modulating ring in a dual air-gap magnetic gear electric machine. The result of the analysis show that the circle and the ecliptic shape has less core loss compared to the conventional quadrilateral shape, thus improves the flux density seen in the air-gaps of the magnetic gear electric machine. In addition, a study was conducted using a unit equivalent magnetic circuit in correlating the relationship between the magnet thickness, the modulating ring pole piece thickness and their circumferential pitch. The study reveals the need to simultaneously consider these parameters during the design of a magnetic gear electric machine because of their strong mutual dependency. To verify the results of finite element analysis (FEA), a prototype was built using the same configurations of the FEA model. Measurements taken from the prototype are on par with the simulated results.
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