电气工程学报 ›› 2019, Vol. 14 ›› Issue (1): 9-14.doi: 10.11985/2019.01.002

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永磁轮毂电机过载状态下的温升计算

陈蕾1,孙跃1,方金龙2,鲍晓华2   

  1. 1. 安徽皖南电机股份有限公司 泾县 242500
    2. 合肥工业大学电气与自动化工程学院 合肥 230009
  • 收稿日期:2019-01-21 出版日期:2019-03-25 发布日期:2019-11-01
  • 作者简介:陈蕾,女,1975年生,工程师,主要从事电机制造及检测技术方面的工作。E-mail: cl4156@sina.com|孙跃,男,1973年生,总工程师,主要从事电机设计及制造技术方面的工作。

Calculation of Temperature Rise for Permanent Magnet Hub Motor Under Overload Condition

CHEN Lei1,SUN Yue1,FANG Jinlong2,BAO Xiaohua2   

  1. 1. Anhui Wannan Electric Machine Co.,Ltd., Jingxian 242500 China
    2. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009 China
  • Received:2019-01-21 Online:2019-03-25 Published:2019-11-01

摘要:

永磁轮毂电机过载状态下电机内部温升计算对电机安全运行和运行寿命分析至关重要。以一台30 kW的内置式永磁轮毂电机为例,提出了一种基于二维有限元模型快速分析极限过载能力的方法,建立三维有限元模型,分析不同负载状态下电机内部的损耗分布,并以损耗为热源导入到有限元温度场。基于自然冷却计算电机各部分散热系数,通过稳态温度场分析额定转矩下永磁轮毂电机内部的温度分布,瞬态温度场分析极限过载下永磁轮毂电机内部的温度分布。所研究的内容对于电机过载能力分析及电机散热结构优化设计具有一定的理论参考价值。

关键词: 永磁轮毂电机, 过载分析, 温升计算, 有限元温度场

Abstract:

The calculation of internal temperature rise of permanent magnet hub motor under overload condition is very important for the safe operation and service life analysis. Taking a 30 kW permanent magnet hub motor as an example, a method for rapid analysis of ultimate overload capacity based on two-dimensional finite element model is proposed. Then, the three-dimensional finite element models are established to analyze the internal loss distribution of the motor under different load conditions, and the loss is used as heat source to import into the finite element temperature field. Based on natural cooling, the heat dissipation coefficients of each part of motor are calculated. The temperature distribution in permanent magnet hub motor under rated torque is analyzed by steady-state temperature field, and the temperature distribution in permanent magnet hub motor under ultimate overload is analyzed by transient temperature field. The research contents in this paper have certain theoretical reference value for overload capacity analysis and optimization design of heat dissipation structure of motor.

Key words: Permanent magnet hub motor, overload analysis, temperature rise calculation, finite element temperature field

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