摘要
永磁同步电机非稳态模拟受边界条件限制,数据相关性差,影响模拟结果的准确性,提出一种新的永磁同步电机全域非稳态温度场数值模拟方法。根据热传递与能量守恒相关定理,获取温度场的导热方程。通过对电机模型实施假设,准确获取边界条件。根据边界条件实时分析温度场,以构建全域非稳态温度场计算模型。在有限元分析软件中输入构建的全域非稳态温度场计算模型,获得全域非稳态温度场的三维模型。通过三维模型融合整体数据,提高电机整体数据的相关性,并计算其各部分的具体生热率,完成永磁同步电机的全域非稳态温度场数值模拟研究。实验结果表明,上述方法的数值模拟准确性较高,有效提升了模拟性能。
Traditionally,the unsteady state simulation of permanent magnet synchronous motor(PMSM)is restricted by boundary conditions,leading to poor data correlation and low simulation results.Therefore,a new numerical simulation method of the global unsteady temperature field of PMSM is proposed in this paper.First of all,the heat conduction equation of the temperature field was obtained by the related theorem of heat transfer and energy conservation,and the boundary conditions were obtained by assuming the motor model.Secondly,the temperature field was analyzed in real-time according to the boundary conditions for establishing the global unsteady temperature field calculation model.Then,in the finite element analysis software,the global unsteady temperature field calculation model was input to obtain the three-dimensional model of the global unsteady temperature field.Finally,the three-dimensional model was integrated with the whole data to improve the correlation of the overall data of the motor,moreover,the specific heat generation rate of each part was calculated to achieve the global transient temperature field numerical simulation of permanent magnet synchronous motor.The results show that the method has high accuracy and excellent simulation performance.
作者
梁志强
LIANG Zhi-qiang(Shenyang University of Technology,Shenyang Liaoning 111003,China)
出处
《计算机仿真》
北大核心
2022年第3期325-329,共5页
Computer Simulation
基金
辽宁省自然科学基金(201202191)。
关键词
永磁同步电机
全域非稳态温度场
数值模拟
导热方程
生热率
Permanent magnet synchronous motor
Global unsteady temperature field
Numerical simulation
Heat conduction equation
Heat generation rate
