永磁同步电机效率优化的最大转矩电流比控制方法  

Efficiency optimization control of PMSM based on maximum ratio of torque to current

作　　者：郭庆鼎[1] 陈启飞[1] 刘春芳[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110023

出　　处：《沈阳工业大学学报》2008年第1期1-5,共5页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(59875061)

摘　　要：对永磁同步电动机效率优化的最大转矩电流比进行了研究.根据PMSM在d-q坐标下的基本方程,用极值原理建立了d、q轴电流与转矩的非线性方程组;推导出d、q轴电流与转矩的非线性方程组和d、q轴电流与转矩的表达式;实现了最大转矩电流比控制方法.为便于工程应用,在最大转矩电流比控制的基础上,将转矩与d、q轴电流的表达式进行了线性化,采用优化方法,给出了最大转矩电流比控制的工程近似算法,该方法非常接近最大转矩电流比控制的性能.Efficiency optimization control of permanent magnet synchronous motor （PMSM） based on maximum ratio of torque to current is presented. From basic equations of PMSM in d-q reference frame, d and q axis currents and nonlinear torque equations were derived using maximum principle. The control scheme of maximum ratio of torque to current was proposed. To facilitate engineering application in practice, the torque and d, q axis current formula were linearized based on the control of maximum ratio of torque to current. An approximation algorithm of maximum ratio of torque to current for easy engineering application was built up using optimization method. The results show that the present scheme is very close to the control performances from maximum ratio of torque to current.

关 键 词：永磁同步电动机 最大转矩电流比 极值原理 效率 优化 

分 类 号：TM273[一般工业技术—材料科学与工程]