计及永磁体涡流损耗分布特性的实时热计算方法

发布时间：2019-05-29 03:16

【摘要】：针对提高永磁电机温升计算准确性的问题,提出一种计及永磁体涡流损耗分布特性的实时热计算方法。依据温度对电机内各材料属性有所影响,且永磁体涡流损耗有其特有的分布特性的事实,提出并采用计及永磁体涡流损耗分布特性的实时热计算方法,以一台10 k W变频驱动永磁同步电动机为例进行实例计算,与普通未计及永磁体涡流损耗分布特性、没有使用实时热计算方法的温升计算方法对比,经在线温升测量,验证了计及永磁体涡流损耗分布特性的实时热计算方法能有效提高温升计算的准确性,可使计算结果与实验结果之间的误差缩小到0.5%之内。
[Abstract]:In order to improve the accuracy of temperature rise calculation of permanent magnet motor, a real-time thermal calculation method considering the distribution characteristics of Eddy current loss of permanent magnet is proposed. According to the fact that temperature has influence on the properties of each material in the motor and that the Eddy current loss of permanent magnet has its unique distribution characteristics, a real-time thermal calculation method considering the distribution characteristics of Eddy current loss of permanent magnet is proposed and adopted. Taking a 10kW variable frequency drive permanent magnet synchronous motor as an example, the calculation is carried out. Compared with the ordinary permanent magnet vortex loss distribution characteristics, there is no comparison of the temperature rise calculation method using the real-time thermal calculation method, and the on-line temperature rise measurement is carried out. It is verified that the real-time thermal calculation method, which takes into account the Eddy current loss distribution characteristics of permanent magnets, can effectively improve the accuracy of temperature rise calculation, and reduce the error between the calculated results and the experimental results to less than 0.5%.
【作者单位】：沈阳工业大学国家稀土永磁电机工程技术研究中心;沈阳航空航天大学民用航空学院;
【基金】：国家科技支撑计划项目(2013BAE08B00) 国家自然科学基金(51307111) 辽宁省教育厅科学技术研究项目(L2013049);辽宁省教育厅科学技术研究项目(L201601)
【分类号】：TM351

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