Design and Analysis of a Coaxial Magnetic Gear Mechanism
| Autor: | Ming-Yuan Chen, 陳明源 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 Magnetic gears transmit torque by using magnetic coupling. The input and output of magnetic gear mechanism is non-contact transmission. It equips non friction, low energy consumption, low noise and vibration, mechanical fatigue, would not be interfered by impurity and dust and overload protection, etc. Therefore, it’s better than traditional mechanical gears in certain places. However, the torque density of traditional magnetic gear mechanism is so low that limits the promotion and application. A new type of concentric magnetic gear mechanism can modulate magnetic field of inner and outer rotor so it improves the utilization rate of the permanent magnet. This article aims to analyze the method of magnetic flux density and torque transmission of concentric magnetic gear. First step, analyzing the field of static magnetic by using equivalent magnetic circuit network (EMCN), and compared with finite element analysis. Then, using Maxwell stress tensor method combined with the gap magnetic flux density from equivalent magnetic circuit network for calculating torque transmission and to compare with finite element analysis. We use three different pole pairs of magnetic to analyze. On radial gap flux density, the maximum error between 2D EMCN and finite element analysis is 5.55%. The maximum error of tangential gap magnetic flux density is 5.06%. Show up 2D EMCN is feasible and correct. At transmission torque, the maximum error between Maxwell stress tensor method and finite element analysis is up to 56%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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