2014 年 3 巻 1 号 p. 62-67
Magnetic gears offer several advantages against conventional mechanical gears such as easy maintenance, low vibration and acoustic noise, and high reliability. For the practical application of magnetic gears, experimental studies on gear characteristics that consider real manufacturing constraints should be performed. This paper presents the loss analysis, experimental tests, and performance improvement of a surface permanent magnet (SPM) magnetic gear. The torque characteristic and the efficiency of the SPM magnetic gear were calculated using finite element analysis (FEA). Experiments were performed on a trial magnetic gear. The FEA and experimental results demonstrated the improved efficiency of the trial gear. The maximum efficiency of the improved gear was over 96%.
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