液压电机泵中电机定子形状对电磁特性和温度场的影响

发布时间：2018-01-07 21:30

本文关键词：液压电机泵中电机定子形状对电磁特性和温度场的影响　出处：《兰州理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：液压电机泵是将浸油电动机和液压泵集成在一个壳体内的新型一体化电动液压动力单元，电动机和液压泵共用同一根轴，省去冷却风扇，由油流冷却，转轴无外伸、无需动密封，具有结构紧凑、噪声低等优点。本文以电机泵中浸油电动机为研究对象，考虑缩小电机定子外形尺寸，以获得更紧凑的液压电机泵，设计出了液压电机泵八边形电机。针对液压电机泵圆形电机和八边形电机进行电磁特性和温度场仿真计算，并对结果进行对比分析。本文的主要内容：第1章，阐述了本课题的研究背景和意义；概述了液压电机泵国内外的研究及发展概况，并阐述了有限元分析方法在电机的分析和设计中的应用现状及其对本课题研究的应用价值；提出了本论文主要的研究内容。第2章，介绍了液压电机泵电机的结构特点，并阐述其工作原理。从基本电磁关系出发，对液压电机泵浸油电机的功率关系和转矩关系进行分析，通过电磁关系建立浸油电机的基本方程、等效电路和相量图。最后运用Ansoft RMxprt模块分析了液压电机泵浸油电机的电磁性能。第3章，运用Ansoft RMxprt模块分析电机定子外径变化对电机性能的影响，在原液压电机泵圆形电机的基础上对液压电机泵电机定子外形形状进行了设计，，提出了八边形电机结构。运用Ansoft Maxwell软件对不同外径的圆形电机和八边形电机进行电磁性能仿真计算，分析对比其在空载和负载情况下的电磁性能。对数值计算结果进行处理，得到不同电机的气隙磁感应强度，将其进行FFT变换得到基波与高次谐波的分布情况。第4章，对液压电机泵圆形电机定子和八边形电机定子进行温度场分析。计算电机定子各部分损耗值，利用流体力学理论计算其流道表面散热系数，采用ANSYSWorkbench软件对圆形电机定子和八边形电机定子在负载情况下进行三维稳态温度场分析，进而掌握不同电机定子负载稳态运行下的发热和散热情况。第5章，对第二代液压电机叶片泵电机定子温度场进行数值模拟，获得电机定子及壳体负载运行的温度分布特征。通过对研制出的液压电机叶片泵样机不同位置布设温度传感器的方式对温度场实时检测，获取其各个特征点的温度变化规律。
[Abstract]:Hydraulic motor pump is oil immersed motor and hydraulic pump is integrated in a shell model integrated electric hydraulic power unit, the hydraulic pump motor and share the same axis, save by the cooling fan, oil cooling, no shaft overhang, without dynamic sealing, has the advantages of compact structure, low noise.
The oil pump motor motor as the research object, considering reducing the stator dimensions, in order to obtain a more compact hydraulic motor pump, designed the hydraulic motor pump motor. According to the eight sided hydraulic motor pump motor and eight circular edge shape motor electromagnetic properties and temperature field simulation, and the results are analyzed.
The main contents of this article are as follows:
The first chapter expounds the research background and significance; summarizes the research and development of hydraulic motor pump at home and abroad, and expounds the application of finite element analysis method in the analysis and design of motor and its application value for the research; put forward the main research contents in this paper.
The second chapter introduces the structure characteristics of the hydraulic motor pump motor, and expounds its working principle. Starting from the basic electromagnetic relation, carries on the analysis to the hydraulic motor pump oil motor power and torque, the fundamental equations of oil immersed motor through the electromagnetic relationship, equivalent circuit and phasor diagram. Finally, the electromagnetic performance of hydraulic motor pump oil the motor is analyzed using Ansoft RMxprt module.
The third chapter, using the Ansoft RMxprt module analyzes the influence of motor stator diameter change on the motor performance, based on the original hydraulic motor pump round motor on the design of hydraulic motor pump motor stator shape, put forward eight sided motor structure. Using circular motor Ansoft Maxwell software with different diameter and eight edge shaped motor electromagnetic simulation, analysis and comparison in the no-load and load conditions of electromagnetic properties. Results of numerical calculation, get the magnetic induction intensity of different motor, the harmonic distribution of the FFT transform.
The fourth chapter is analysis of the temperature field of hydraulic motor pump round motor stator and eight sided stator. Each part loss of stator is calculated, the flow calculation of surface heat transfer coefficient using the theory of fluid mechanics, the circular stator and eight sided electric machine stator is analyzed 3-dimensional steady-state temperature field under load by using ANSYSWorkbench software then, master the heating and cooling load under different conditions of steady-state operation of motor stator.
The fifth chapter, the numerical simulation of the second generation hydraulic motor vane pump stator temperature field for motor stator and shell load temperature distribution operation. Based on the prototype of hydraulic motor vane pump setting temperature sensor developed on the temperature field of the real-time detection of temperature variation to obtain the different feature points.

【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH38;TM301

【引证文献】