开槽实心转子电机的等效电路参数计算与性能分析

发布时间：2018-11-10 07:18

【摘要】：该文将开槽实心转子开槽区域等效为各向异性的均匀介质,由二维解析法计算转子磁路线性时的等效转子阻抗参数。据此分析转子开槽数量变化对实心转子等效阻抗的影响规律,说明了转子开槽数量影响电机输出转矩和功率因数的原理。为考虑转子磁路饱和,采用二维有限元谐波场计算电机磁场分布;为考虑开槽转子端部效应,依据开槽实心转子涡流分布规律,提出适用于开槽转子的端部系数。制造了3台不同转子槽数的开槽实心转子实验样机,在不同工况下的仿真计算和实验结果较吻合,验证了开槽转子端部系数和仿真算法的有效性。开槽转子线性等效阻抗可用于快速分析转子开槽对电机性能影响,而有限元法结合转子开槽端部系数可准确计算电机磁场,两者结合可为设计和优化开槽实心转子电机提供理论依据和手段。
[Abstract]:In this paper, the slotted region of a slotted solid rotor is equivalent to an anisotropic homogeneous medium, and the equivalent rotor impedance parameters when the rotor magnetic circuit is linear are calculated by the two-dimensional analytical method. Based on the analysis of the effect of the number of slots on the equivalent impedance of the solid rotor, the principle that the number of slots affects the output torque and power factor of the motor is explained. In order to consider the saturation of rotor magnetic circuit, the magnetic field distribution of motor is calculated by using two-dimensional finite element harmonic field, and the end coefficient of slotted rotor is put forward according to the eddy current distribution law of slotted solid rotor in order to consider the effect of end part of slotted rotor. Three slotted solid rotor experimental prototypes with different number of grooves are manufactured. The simulation results are in good agreement with the experimental results under different working conditions. The effectiveness of the end coefficient and simulation algorithm of the slotted rotor is verified. Linear equivalent impedance of slotted rotor can be used to quickly analyze the effect of rotor-slotted rotor on motor performance, and the finite element method combined with rotor slotting end coefficient can accurately calculate the motor magnetic field. The combination of the two can provide theoretical basis and means for designing and optimizing slotted solid rotor 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);海军潜艇学院;中石化中原石油工程有限公司;
【基金】：国家自然科学基金项目(51177077) 国家科技支撑计划项目(2014BAA04B02)~~
【分类号】：TM301

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