无差拍直接转矩控制的MRAS参数辨识方法  

Parameter Identification Based on MRAS Deadbeat-direct Torque and Flux Control

作　　者：孙嘉伟 郑泽东[1] 李永东[1,2] SUN Jiawei;ZHENG Zedong;LI Yongdong(Department of Electrical Engineering, Tsinghua University,Beijing 100084, China;College of Electrical Engineering , Xinjiang University , Urumqi 830001 , Xinjiang , China)

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084 [2]新疆大学电气工程学院,新疆乌鲁木齐830001

出　　处：《电气传动》2018年第5期3-7,共5页Electric Drive

摘　　要：异步电机的无差拍直接转矩控制方法具有优异的动态、稳态控制性能,但其对参数准确性依赖较高,研究提出了一种适用于该控制算法的参数辨识方法,以提高算法的参数鲁棒性。首先对参数误差对无差拍直接转矩控制性能的影响进行了理论和仿真研究,之后基于模型参考自适应方法(MRAS)提出了一种针对励磁电感和转子时间常数的参数辨识方法。实验证明该方法辨识结果与理论分析相一致,辨识算法的有效性得到了验证。Deadbeat-direct torque and flux control has excellent dynamic-state and steady-state performance, but it is also sensitive to parameter variation. Parameter identification method integrated on DB-DTFC was dedicated. First, the parameter sensitivity of DB- DTFC was studied via theoretical analysis and simulation. Then, a model reference adaptive system parameter identifier was proposed to estimate magnetizing inductance and rotor time constant. Experimental results are in accordance with theoretical analysis, prove the validity- of proposed method.

关 键 词：异步电机 无差拍直接转矩控制 磁链观测器 参数辨识 模型参考自适应系统 

分 类 号：TM301.2[电气工程—电机]