基于矢量控制的异步电机预测电流控制算法孙伟.pdfVIP

第 34 卷 第 21 期 中 国 电 机 工 程 学 报 Vol.34 No.21 Jul.25, 2014 3448 2014 年 7 月 25 日 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. DOI 10.13334/j.0258-8013.pcsee.2014.21.007 0258-8013 (2014) 21-3448-08 TM 921 孙伟，于泳，王高林，徐殿国，王勃 (哈尔滨工业大学电气工程及自动化学院，黑龙江省 哈尔滨市 150001) A Predictive Current Control Scheme for Induction Motor With Vector Control SUN Wei, YU Yong, WANG Gaolin, XU Dianguo, WANG Bo (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China) ABSTRACT: This paper proposed a novel robust predictive 制调速系统具有可靠性能高、鲁棒性强等优点，在 control scheme, with indirect vector control system, for the 工业应用场合得到了非常广泛的应用。系统通过对 induction motor. In order to improve the current loop bandwidth 电机定子电流进行坐标变换，以便将转矩电流和磁 in control system, the restrictions to current-loop bandwidth 链电流分离，实现控制性能的提升。异步电机矢量 improvement was analyzed. The predictive control scheme based 控制一般为双闭环结构，即外环速度环和内环电流 on mathematical model of induction motor in synchronous frame was proposed to improve the current-loop bandwidth and the 环，双闭环结构中均采用数字比例积分调节器 performance of dynamic response. Meanwhile reasons of (proportion integration，PI)作为控制器[1]，而采用数 destabilization in system were analyzed and two robust factors 字 PI 控制器时，数字控制存在的固有滞后特性会限 were added to predictive current controller to upgrade the 制系统响应速度的提升，即限制系统带宽的增加， robustness of system and reduce the sensitivity to motor 因此需要一种新的控制方法来解决系统带宽受到 parameters. Experiment results show that the proposed robust 数字 PI 控制滞后特性限制的问题。现阶段，预测控 predictive current control sche