基于改进混合模型转子磁链观测器的异步电机无速度传感器控制  

Speed-sensorless control of an asynchronous motor based on an improved hybrid model rotor flux observer

作　　者：郭磊磊 靳雪妍 朱虹 李琰琰 王帅 金楠 GUO Leilei;JIN Xueyan;ZHU Hong;LI Yanyan;WANG Shuai;JIN Nan(School of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;China Energy Engineering Group Anhui Electric Power Design Institute Co.,Ltd.,Hefei 230601,China)

机构地区：[1]郑州轻工业大学电气信息工程学院,河南郑州450002 [2]中国能源建设集团安徽省电力设计院有限公司,安徽合肥230601

出　　处：《电力系统保护与控制》2024年第8期178-187,共10页Power System Protection and Control

基　　金：河南省科技攻关项目资助(232102241026);河南省优秀青年科学基金项目资助(242300421074)。

摘　　要：针对异步电机无速度传感器控制由于估计转子磁链不准确导致控制精度不佳的问题,提出了一种改进的混合模型转子磁链观测器设计方法。首先,介绍了常规的异步电机磁链观测方法,并借助异步电机的复矢量模型和特征函数详细分析了常规Gopinath型转子磁链观测器存在的主要问题。其次,为了解决常规磁链观测器存在的缺点,提出了一种改进的特征函数设计方法,进而得到了一种改进的混合模型转子磁链观测器。再次,基于特征函数和频率响应函数,进一步对比研究了常规Gopinath型转子磁链观测器和所提改进的混合模型转子磁链观测器的参数灵敏性。最后,利用所提混合模型转子磁链观测器的磁链观测结果和锁相环,实现了异步电机的无速度传感器控制。基于StarSim和YXSPACE-SP2000平台的对比实验结果,验证了所提混合模型转子磁链观测器的参数鲁棒性,同时也验证了所提无速度传感器控制策略的有效性。There is a problem of poor control accuracy of speed-sensorless control of an asynchronous motor due to inaccurate estimation of rotor flux.Thus an improved hybrid model rotor flux observer design method is proposed.First,the conventional flux observation method of an asynchronous motor is introduced,and the main problems of the conventional Gopinath rotor flux observer are analyzed in detail using the complex vector model and characteristic function of asynchronous motor.Secondly,an improved characteristic function design method is proposed to solve the drawbacks of the conventional rotor flux observer,and then an improved hybrid model flux observer is obtained.Thirdly,the parameter sensitivity of the conventional Gopinath rotor flux observer and the improved hybrid model rotor flux observer are further compared based on the characteristic and frequency response functions.Finally,the speed-sensorless control of the asynchronous motor is realized using the flux observation results of the proposed hybrid model rotor flux observer and the phase-locked loop.The comparative experimental results based on StarSim and YXSPACE-SP2000 experimental platforms verify the parameter robustness of the hybrid model rotor flux observer proposed,as well as the effectiveness of the proposed speed-sensorless control strategy.

关 键 词：异步电机 混合模型磁链观测器 特征函数 参数灵敏性 无速度传感器 

分 类 号：TM343[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]