摘要
针对转矩角控制型永磁同步电机直接转矩控制系统,文中提出并设计了一种变比例系数转矩PI调节器。为了减小电磁转矩与转矩角非线性关系这一因数给电机电磁转矩动态调节造成的误差,保证转矩在动态过程中准确而快速调节,文中通过对电机电磁转矩控制原理分析,给出转矩PI调节器中比例系数的最优设计方法;为了消除电机电磁转矩稳态误差及保证系统工作的稳定性,借助系统的小信号模型推导出转矩PI调节器中积分系数设计原则,最后给出的实验结果证明了上述新型转矩PI调节器设计方法的可行性和有效性。
In this paper, a proportional-plus-integral (PI) torque controller with variable proportion for direct torque control (DTC) of permanent magnet synchronous motor (PMSM) drive based on the torque angle control is proposed. By analyzing the torque control of PMSM, the optimum design of proportion in the PI torque controller is presented in order to reduce the torque error in dynamic state resulted from the nonlinear relationship between the torque and torque angle, and ensure exact and quick control of torque in dynamic state. In order to eliminate the steady-state error of torque and guarantee the stability of system, the design of the integral part of PI torque controller is deduced by using the small signal model of system. The experimental results verify the feasibility and effectiveness of the proposed PI torque controller.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第9期204-208,共5页
Proceedings of the CSEE
基金
航空重点基础科学基金(98252001)
"十五预研项目"(402060201)
关键词
永磁同步电机
控制系统
变比例系数转矩调节器
设计
定子磁链
Electric machinery
Permanent magnet synchronous motor
Direct torque control
PI torque controller
Integral modulus
