大间隙磁力驱动轴流式血泵的电磁特性  

Electromagnetic characteristics of large gap magnetic driving axial flow blood pump

作　　者：谭卓[1] 谭建平[1] 刘云龙[1] 谭炜[1] 

机构地区：[1]中南大学机电工程学院,高性能复杂制造国家重点实验室,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2015年第1期99-106,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51075403);教育部博士学科点专项基金资助项目(20100162110004)~~

摘　　要：为提高大间隙磁力传动下系统的驱动能力、传递效率和稳定性,提出三齿槽定子驱动轴流式血泵的大间隙磁力传动技术,对系统的驱动力矩和空间磁场分布电磁特性进行研究。建立三齿槽定子驱动力矩和空间磁场理论模型,利用MATLAB软件解析求解理论模型,并将解析值与ANSYS数值求解值对比,通过实验对驱动力矩和空间磁场理论模型和仿真模型进行验证。研究结果表明:驱动力矩和空间磁场数学模型正确;血泵在运行过程中稳定,连续运转过程无失步现象,系统传递效率提高;增大电流和减小主从磁极距离能提高驱动能力;主从磁极相对位置在x方向位于0 mm,y方向距离小于60 mm,z方向在±1.5 mm内,可提高系统驱动能力。该研究为大间隙磁力传动技术的可行性提供了途径和依据。In order to improve the drive capability, feasibility and stability of the large gap magnetic driving system, a large gap magnetic driving system driven by three-alveolar stator was put forward, and the electromagnetic characteristics of driving torque and space magnetic field distribution for the system were studied. In addition, the mathematical model of driving torque and space magnetic field of the three alveolar stator were created. The mathematical theoretical model was solved by using the Matlab, whose analytical values were compared with ANSYS numerical values, and the theoretical model and ANSYS simulation model of the driving torque and space magnetic field were verified through experiment. The results show that the driving torque and space magnetic field mathematical model is correct. It is stable in the operation of axial flow blood pump, there is no feature out of step, system transmission efficiency is improved, and increasing the current and reducing the pole coupling distance can improve the driving capability. The three alveolar stator and permanent magnet＇s relative position is 0 mm in x direction, less than 60 mm iny direction and ±1.5 mm in z direction, which can improve the system＇s driving capability. The research can provide methods and basis for the feasibility of large gap magnetic driving technology.

关 键 词：磁力传动 三齿槽 驱动力矩 空间磁场 

分 类 号：TH133.4[机械工程—机械制造及自动化]