高精度无差拍磁链观测器设计

发布时间：2018-05-07 09:01

本文选题：磁链观测器 + 无差拍　；参考：《中国电机工程学报》2014年27期

【摘要】：感应电机磁链观测的准确性直接影响电机控制的准确性和稳定性。传统的开环电流模型和电压模型在低速段和高速段都受到电机参数等因素的限制,严重制约电机的输出特性。为了提高磁链观测器的准确性和稳定性,采用一种新型的闭环磁链模型,综合电流模型和电压模型的优势,并采用包含相位补偿的过渡函数,不仅在全速段保证了磁链模型的准确性,而且减小了磁链观测器对电机参数的敏感性。为了实现磁链的无差拍控制,在磁链观测器中加入定子电流观测器单元,解决了定子电流采样滞后一个采样周期的问题,实现转子磁链观测器无差拍的输出。该文采用频率响应函数分析磁链观测器的特性,仿真和实验验证了算法的正确性和稳定性。
[Abstract]:The accuracy of flux observation of induction motor directly affects the accuracy and stability of motor control. The traditional open-loop current model and voltage model are restricted by the motor parameters in the low speed and high speed sections, which seriously restrict the output characteristics of the motor. In order to improve the accuracy and stability of the flux observer, a novel closed-loop flux model is used to integrate the advantages of the current model and the voltage model, and a transition function including phase compensation is adopted. It not only ensures the accuracy of the flux model at full speed, but also reduces the sensitivity of the flux observer to the parameters of the motor. In order to realize non-beat control of flux chain, stator current observer unit is added to the flux observer, which solves the problem of stator current sampling lagging one sampling period, and realizes the output of rotor flux observer without beat. In this paper, the frequency response function is used to analyze the characteristics of the flux observer, and the correctness and stability of the algorithm are verified by simulation and experiment.
【作者单位】：电力传输与功率变换教育部重点实验室(上海交通大学);上海空间电源研究所;
【基金】：国家863高技术基金项目(2011AA050403) 高等学校博士学科点专项科研基金资助项目(新教师类)(20110073120034)~~
【分类号】：TM346

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