Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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电励磁同步电动机转矩角截止负反馈闭环控制

来源:电工电气发布时间:2016-04-05 16:05 浏览次数:311

电励磁同步电动机转矩角截止负反馈闭环控制 

谢慕君1,步伟明1,冯敬芳1,王志乾2 
1 长春工业大学 电气与电子工程学院,吉林 长春 130012;
2 中国科学院长春光学精密机械与物理研究所,吉林 长春 130033
 
 

摘 要: 针对电励磁同步电动机负载变化易失步的问题,通过对转矩角特性分析,提出了一种基于转矩角截止负反馈的控制策略。阐述了利用转矩角控制防止失步的原理,建立了基于同步电动机磁链观测的转矩角数学模型,并设计了转矩角外环、励磁电流内环的双闭环控制系统。仿真结果表明,该控制策略与常规控制相比,适应负载变化的能力显著提高,有效抑制了电机的失步,为电机的稳定控制开辟了新途径。
关键词: 转矩角;电励磁同步电机;失步;截止负反馈;双闭环
中图分类号:TM341 文献标识码:A 文章编号:1007-3175(2013)11-0006-04


Torque-Angle Cut-Off Negative Feedback Closed-Loop Control Strategy of Electrical Excited Synchronous Motor 

XIE Mu-jun1, BU Wei-ming1, FENG Jing-fang1, WANG Zhi-qian2 
1 School of Electrical and Electronic Engineering, Changchun University of Technology, Changchun 130012, China;
2 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
 
 

Abstract: Aiming at the problem that the electrical synchronous excited motor will be out of step with the load changes, this paper raised a control strategy based on torque-angle cut-off feedback via the analysis of torque-angle characteristics. Discussion was made to the principle using torque-angle control to prevent out-of-step. The mathematical model of torque-angle was constructed based on the flux linkage observation of synchronous motors and the double closed-loop control system for the outer loop adopting torqueangle and the inner loop adopting field current were designed. The simulation results show that compared with conventional control, this control strategy obviously met the requirements of load changes, effectively restraining out-of-step of motors, which opens up a new way for stable control of motors.
         Key words: torque-angle; electrical excited synchronous motor; out-of-step; cut-off negative feedback; double-closed-loop


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