变频控制下永磁同步电机温度场分析  

Temperature Field Investigation of Permanent Magnet Synchronous Motors Controlled by the Frequency Conversion Control System

作　　者：丁树业[1] 郭保成[1] 冯海军 章艺 王海涛[1] 郭长光 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江省哈尔滨市150080 [2]中船重工704研究所,上海市徐汇区200031

出　　处：《中国电机工程学报》2014年第9期1368-1375,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51277045);黑龙江省自然科学基金(QC2012C109);黑龙江省教育厅基金项目(12531112);哈尔滨理工大学青年拔尖创新人才科学基金项目(201301)~~

摘　　要：在变频控制下的永磁同步电机谐波含量大、发热严重,且散热结构复杂。为研究其温升分布规律,该文以一台50 kW永磁同步电机为例,基于计算流体力学以及传热传质学基本理论,根据共轭传热原理,建立包含形状复杂的散热翅及接线盒等结构部件的三维流动与传热的物理模型。应用有限体积元法,对变频供电情况下的永磁同步驱动电机内各部件温升及流体流动进行了数值求解,并着重分析了电机内主要结构部件的温升空间分布特性。通过与实验数据的对比分析,验证了其计算结果的准确性以及求解方法的合理性,为中小型永磁同步驱动电机的设计提供一定的参考和实际工程价值。The problems of harmonics and the heat of permanent magnet synchronous motors （PMSMs） are quite large when operating under the frequency conversion control system. The cooling structure of PMSM is usually .complex. To research the temperature distribution of PMSM, a 50kW surface PMSM was taken as a research object in this paper, based on the computational fluid dynamics （CFD） and the numerical heat transfer theory. A three dimensional fluid flow and heat transfer model including components such as the complex fins, and the connecting box was set up by using a liquid-solid conjugate heat transfer approach. Thus, the temperature and fluid field of PMSM, operating under frequency conversion control, was simulated numerically using the finite volume method, and the spatial temperature distributing characteristics of main components were analyzed. The correctness of the proposed model and the rationality of the solution method were verified by the thermal test of PMSM. This paper has a reference value and significant guideline for PMSM design.

关 键 词：永磁同步电机 变频控制 共轭传热 三维温度场 

分 类 号：TM341[电气工程—电机] TM351