Design, Fabrication and Testing of a Micro Axial Reluctance Motor
| Autor: | Shan-Yuan Yang, 楊善淵 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 The purpose of this study is to improve the designs of micro axial flux reluctance motors with ease of assembly. There are two types of micro motors under investigation: one is three-phase 6/4 pole design, the other is two-phase 4/2 pole design. Both motors employ circular-shape for pole face of stator cores to eliminate fan-shape pole face and its electroplating process from previous design. The size of micro motor and number of parts can be further reduced by adopting two-phase motor design. The JMAG software is used for 3D electromagnetic analysis to examine the motor performance using electroplated rotor. The effects of circular pole face with different rotor designs are also evaluated. Three asymmetric shapes of rotor for two-phase motor are considered to avoid death zone and ensure smooth drive. The three-phase motor has an outer diameter of 0.8 mm and length of 2.2 mm with maximum output torque of 0.05μN-m. It achieves a maximum no load speed of 4,500 RPM with input current of 0.9A. The smaller two-phase motor has an outer diameter of 0.5 mm and length of 1 mm with maximum output torque of 0.017μN-m. It reaches a maximum speed of 7,500 RPM with input current of 0.8A. In this research the diameter of three phase motor is reduced from 1.5mm of previous design to 0.8mm and diameter of two phase motor is down to only 0.5mm. Both micro reluctance motors are successfully designed, fabricated and tested. With more research and improved performance they can be widely applied in the future. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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