Thermal analysis of high speed permanent magnetic generator  

作　　者：LI WeiLi ZHANG XiaoChen CHENG ShuKang CAO JunCi ZHANG YiHuang 

机构地区：[1]School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China [2]School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Science China(Technological Sciences)》2012年第5期1419-1426,共8页中国科学（技术科学英文版）

基　　金：supported by the National High Technology Research and Development Program of China ("863" Program) (Grant No. 2007AA050501);the Heilongjiang Critical Priority Research (Grant No. GB08A302)

摘　　要：High-speed permanent magnetic generators (HSPMG) are common and important power generation equipments used in distributed generation systems. A 100 kW level HSPMG is investigated in this paper, and it is fluid-thermal coupling analyzed. The transient 2D electromagnetic field while machine is under rated operating is analyzed by using the time-stepping FEM, from which the electromagnetic performances and the loss distributions are obtained. Then, an analysis model for fluid-solid temperature field analysis is established. Taking losses as the distributed heat sources, the 3D thermal field is coupling calculated. The variations of heat transfer coefficient and temperature of fluid in stator grooves along the axial direction, as well as the whole region 3D temperature distribution in HSPMG are obtained. Then, considering the variations of heat sources distributions and heat transfer conditions, 3D temperature fields of HSPMG operating under different speeds are calculated, and the influences of machine operating speed on the HSPMG thermal performance are studied, based on which, the functions of machine temperature with operating speed and stator windings resistance are proposed. The obtained conclusions may provide a useful reference for the design and research of HSPMG.

关 键 词：high-speed permanent magnetic generator ELECTROMAGNETIC FLUID TEMPERATURE SPEED 

分 类 号：TM351[电气工程—电机] O657.99[理学—分析化学]