摘要
为了确保凸极同步电动机的寿命和运行可靠性,获得电机转子内部准确的温度分布及其特点是非常重要的。以国内目前单机容量较大的27 MW凸极同步电动机为研究对象,建立了1/8整机内部流场与1/8转子固体结构模型。基于计算流体动力学(CFD)原理,应用有限体积法,首先求解转速为1 500 r/min的额定工况下的1/8整机内部定转子流场。然后,求解包含1/8转子固体结构的三维湍流流固耦合温度场。计算结果表明:整个转子部分峰值温度位于中心对称面处铜绕组中,相邻绝缘层的最高温度为125.7℃未超温,电机安全运行。
In order to ensure the life and operational reliability of a salient synchronous motor, the accu- rate numerical simulation of temperature distribution and its characteristics in the rotor is very important. This paper took an example of 27MW salient synchronous motor which is with large stand-alone capacity at home and established the 1/8 of whole internal flow field with 1/8 of rotor solid structural model. Based on the principles of computational fluid dynamics （CFD）, 1/8 of the whole internal stator and ro- tor flow field was firstly solved at the speed of 1 500 r/min rated conditions by using finite volume meth- od. Secondly, the three-dimensional turbulent fluid-solid coupling temperature flied containing 1/8 of ro- tor structure was solved. The result shows that the position of peak temperature of whole rotor is on the center symmetry plane of the copper winding, the maximum temperature of insulation near to it is 125.7℃ which is not over-temperaturing, and the motor operates safely at the same time. This paper can provide references for similar design.
出处
《电机与控制学报》
EI
CSCD
北大核心
2013年第2期72-77,共6页
Electric Machines and Control
基金
黑龙江省自然科学基金(E201223)
关键词
凸极同步电动机
转子
温度场
数值模拟
salient pole synchronous motors
rotor
temperature field
numerical simulation
