Development of a Micro Axial-type Reluctance Motor

• Main Authors: Yu-Rong Huang, 黃鈺容
• Other Authors: Da-Chen Pang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/42205103859776223063

碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 103 === A micro axial switched reluctance motor (μASRM) is designed using topology optimization method to reduce torque ripple for better performance. The μASRM integrated with micro carousel mechanism becomes a micro rotating system. Both μASRM and micro carousel mechanism are made by MEMS technology. The μASRM designed with 6-pole stator and 4-pole rotor has an outer diameter of 1.5mm and length of 2.25mm. The motor performance is analyzed using JMAG software. The topology optimization method is applied to optimize rotor design. The rotor becomes shuriken shape different from the original fan shape. The torque ripple is effectively reduced by 48%, however, the average torque is decreased by 7%. Both shuriken-type and fan-type μASRMs are manufactured and tested. The shuriken-type motor has a starting torque of 0.0225μNm and achieves maximum speed of 8,250RPM with input current 0.7A. The original fan-type motor has a starting torque of 0.0243μNm and maximum speed of 7,500RPM under the same experimental condition. The small carousel parts are fabricated using thick photoresist lithography process. The carousel mechanism is assembled together with rotor embedded inside. The carousel mechanism integrated shuriken-type μASRM has an outer diameter of 3mm and length of 2.25mm. This micro rotation system achieves a maximum speed of 600 RPM with input current 0.7A.