三相永磁容错电机无位置传感器矢量控制系统研究

发布时间：2018-05-08 15:18

本文选题：无位置传感器 + 滑模观测器　；参考：《大连海事大学》2015年硕士论文

【摘要】：近年来,随着现代电力电子技术、现代控制理论以及永磁材料的飞速发展,永磁容错电机以其高效性,高可靠性等许多优点,在电气传动系统中的应用受到越来越大的关注。为了增加系统的可靠性以及降低成本,永磁容错电机的无位置传感器控制技术成为电机控制技术的研究热点。无位置传感器永磁容错电机控制系统具有结构简单、运行效率高、体积小以及可以用于一些特殊场合的特点。因此,研究基于无位置传感器的永磁容错电机矢量控制技术,具有较大的学术价值和广阔的应用前景。本文在阅读了大量国内外文献的基础上首先介绍了永磁容错电机的结构和特点,建立了三相永磁容错电机在不同坐标系下的数学模型。分析了滑模变结构基本原理,结合永磁容错电机的数学模型研究了基于滑膜观测器的转子位置和转速估计算法。为了解决滑膜观测器抖振问题,对滑膜观测器进行了改进,提高了滑膜观测器对转子位置和转速的估算精度。通过分析三相永磁容错电机的空间电压矢量分布,设计了基于SVPWM控制技术的三相永磁容错电机无位置传感器矢量控制系统。针对永磁容错电机的特点,提出了绕组开路短路故障情况下的三相永磁容错电机容错控制策略,并设计了绕组故障时的三相永磁容错电机矢量控制系统。最后,根据设计的三相永磁容错电机无位置传感器矢量控制系统,搭建了系统仿真模型,并对无故障和绕组开路短路故障情况下的三相永磁容错电机无位置传感器矢量控制系统进行了仿真。仿真结果验证了本文所提出的三相永磁容错电机无位置传感器矢量控制系统的有效性。
[Abstract]:In recent years, with the rapid development of modern power electronics technology, modern control theory and permanent magnet materials, the application of permanent magnet fault-tolerant motor in electrical transmission system has attracted more and more attention because of its high efficiency and high reliability. In order to increase the reliability of the system and reduce the cost, the position sensorless control technology of permanent magnet fault-tolerant motor has become the research hotspot of motor control technology. The position sensorless permanent magnet fault-tolerant motor control system has the advantages of simple structure, high running efficiency, small size and can be used in some special occasions. Therefore, it is of great academic value and wide application prospect to study the vector control technology of permanent magnet fault-tolerant motor based on position sensor. This paper first introduces the structure and characteristics of permanent magnet fault-tolerant motor, and establishes the mathematical model of three-phase permanent magnet fault-tolerant motor in different coordinate system. The basic principle of sliding mode variable structure is analyzed, and the rotor position and speed estimation algorithm based on synovial observer is studied based on the mathematical model of permanent magnet fault-tolerant motor. In order to solve the chattering problem of synovial observer, the synovial observer is improved to improve the accuracy of rotor position and speed estimation. Based on the analysis of space voltage vector distribution of three phase permanent magnet fault tolerant motor, a position sensorless vector control system of three phase permanent magnet fault tolerant motor based on SVPWM control technology is designed. According to the characteristics of permanent magnet fault-tolerant motor, a fault tolerant control strategy for three-phase permanent magnet fault-tolerant motor with winding open circuit fault is proposed, and a vector control system for three-phase permanent magnet fault-tolerant motor is designed. Finally, according to the position sensorless vector control system of the three-phase permanent magnet fault-tolerant motor, the simulation model of the system is built. The position sensorless vector control system of three phase permanent magnet fault tolerant motor is simulated. The simulation results verify the effectiveness of the position sensorless vector control system proposed in this paper.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM351

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