三维分段分层法用于光滑实心转子异步电机参数计算与性能分析

发布时间：2018-03-30 18:12

本文选题：光滑实心转子　切入点：解析计算　出处：《电工技术学报》2016年23期

【摘要】：实心转子异步电机转子中复杂的三维非线性涡流场计算是分析电机性能的基础,而采用三维有限元分析的计算量十分庞大。提出了一种三维分段分层法计算实心转子磁场,可考虑定转子铁心磁路饱和、转子端部效应的影响,且计算量小。定子铁心磁路饱和采用波幅系数以及饱和系数予以考虑。对于转子磁路饱和以及转子端部对涡流分布的影响,将实心转子沿轴向分段、径向分层,各段、各层的磁导率互不相同,每段采用分层理论递推求解磁场量。转子表面磁场强度的收敛边界由定子电流给出,依据转子柱面和两个端面进入转子的能量计算等效转子阻抗,迭代求解转子磁场及阻抗参数,直至收敛。在不同工况下比较了三维分段分层法的计算结果与样机实验结果,两者较为吻合。可以采用这种算法计算光滑实心转子电机参数并分析性能,为设计优化电机提供依据。
[Abstract]:The calculation of complex three-dimensional nonlinear eddy current field in the rotor of solid rotor asynchronous motor is the basis of analyzing the performance of the motor, but the calculation by using three-dimensional finite element analysis is very large. A three-dimensional piecewise stratified method is proposed to calculate the solid rotor magnetic field. The effect of stator and rotor core saturation and rotor end effect can be considered. The amplitude coefficient and saturation coefficient of stator core magnetic circuit saturation are taken into account. The effect of rotor magnetic circuit saturation and rotor end part on eddy current distribution can be considered. The magnetic permeability of each layer of solid rotor is divided along axial and radial directions, and the permeability of each layer is different. In each section, the magnetic field quantity is solved recursively by stratification theory. The convergence boundary of magnetic field intensity on rotor surface is given by stator current. The equivalent rotor impedance is calculated according to the energy of rotor cylinder and two end faces entering the rotor, and the rotor magnetic field and impedance parameters are solved iteratively until convergence. This algorithm can be used to calculate the parameters of the smooth solid rotor motor and analyze its performance, which provides the basis for the design and optimization of the motor.
【作者单位】：电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系);
【基金】：国家自然科学基金(51177077) 国家科技支撑计划(2014BAA04B02)资助项目
【分类号】：TM343

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