梯度投影法实现永磁同步电机最优曲线跟踪  

New Gradient Projection Method Realizes Online Tracking of Optimal Trajectory of Permanent Magnet Synchronous Motor

作　　者：赵昊鹏 齐亮[1] 洪展靖 ZHAO Haopeng;QI Liang;HONG Zhanjing(School of Automation,Jiangsu University of Science and Technology,Zhenjiang 212114,China)

机构地区：[1]江苏科技大学自动化学院,镇江212114

出　　处：《组合机床与自动化加工技术》2024年第8期95-100,共6页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：针对永磁同步电机弱磁控制在线计算复杂度高、计算负担较重的问题,提出一种高效的弱磁曲线跟踪方法,以实现永磁同步电机的运动控制,通过一种更优化的投影与迭代结合的方法实现在一定的电流、电压约束下,电机最优运行状态的在线跟踪。同时,提出了针对ADADELTA梯度下降法的一种简化方法,优化了梯度下降法的计算流程,减少了迭代次数,提高了运算性能。该方法避免了不同运行区域的算法切换,有效地发挥了电机潜能,保证电机高功率输出。最后通过电机对拖实验,验证了此算法的合理性。Aiming at the problems of high online computational complexity and heavy computational burden in the field weakening control of permanent magnet synchronous motors,this paper proposes an efficient field-weakening curve tracking method to realize the motion control of permanent magnet synchronous motors through a more optimized projection.The method combined with iteration realizes online tracking of the optimal operating state of the motor under certain current and voltage constraints.And a simplified method for the ADADELTA gradient descent method is proposed,which optimizes the calculation process of the gradient descent method,reduces the number of iterations,and improves the computing performance.This method avoids algorithm switching in different operating areas,effectively unleashes the potential of the motor and ensures high power output of the motor.Finally,the rationality of this algorithm was verified through the motor towing experiment.

关 键 词：永磁同步电机 投影梯度下降法 最大转矩电流比控制 弱磁控制 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]