Permanent Magnet generator magnetic flux and Heat Transfer research of the efficiency improvement

• Main Authors: Yang, Yao-Min, 楊耀民
• Other Authors: Kam, Tai-Yan
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/81879597849696449605

碩士 === 國立交通大學 === 機械工程學系 === 99 === This research aims to improve the efficiency of a permanent magnet generator by increasing the magnetic flux, modifying the heat transfer property, and reducing the weight of the generator. Without changing the outer dimensions of the permanent magnet generator, the structures of the rotor and stator are designed in such a way that the magnetic flux will be increased, the temperature lowered, and the weight reduced. The finite element method is used to perform the above analyses and the power generation efficiency is studied via static and transient approaches. It has been shown in the transient analysis the change of the geometry of silicon steel can increase the magnetic flux density. The creation of holes and addition of cooling fins on the outer surface of the stator can increase heat dissipation and cooling rate. The design of hollow rotor with supporting ribs can reduce weight without affecting the magnetic flux.