永磁同步电机脉振高频信号注入法无位置传感器控制研究

发布时间：2018-10-09 19:27

【摘要】：永磁同步电机高效率、高功率密度及高可靠性等优点使其在工业、医疗、民用和国防等领域得到了广泛运用。然而,与永磁同步电机同轴安装的机械位置传感器增加了电机系统的成本与复杂性,限制了永磁同步电机的应用。为了解决由机械位置传感器带来的问题,永磁同步电机无位置传感器控制技术被提出并得到到了广泛关注。本文主要研究基于脉振高频电压信号注入法的永磁同步电机无位置传感器控制技术。首先总结了永磁同步电机及其控制技术的发展现状,对现有的永磁同步电机无位置传感器控制技术做了重点介绍。在完成相关技术背景的介绍后,建立了永磁同步电机的数学模型,对永磁同步电机的矢量控制技术进行了理论分析和仿真研究,奠定了后续无位置传感器控制研究的基础;随后根据永磁同步电机数学模型,推导出了其低速和零速下的高频信号模型,进一步完成了对基于脉振高频电压信号注入法的永磁同步电机无位置传感器控制技术的理论分析和仿真研究。之后,针对脉振高频电压信号注入法的系统误差问题,提出了一种基于脉振高频电压谐波分析的误差分析理论。通过仿真和数值分析得出了系统参数对脉振高频电压信号注入法位置估计误差的影响规律,该误差分析理论为脉振高频电压信号注入法相关系统控制参数的选择与优化提供了理论依据。最后,构建了一套基于实时仿真器的,表贴式永磁同步电机脉振高频电压信号注入法无位置传感器控制系统,介绍了系统的软硬件设计,在该系统上分别对永磁同步电机矢量控制、无位置传感器控制及位置误差分析理论进行了实验研究,验证了理论分析和仿真研究的正确性。
[Abstract]:Permanent magnet synchronous motor (PMSM) has been widely used in industrial, medical, civil and national defense fields because of its high efficiency, high power density and high reliability. However, the mechanical position sensor installed coaxially with PMSM increases the cost and complexity of the motor system and limits the application of PMSM. In order to solve the problem caused by mechanical position sensor, the sensorless control technology of permanent magnet synchronous motor (PMSM) has been put forward and received wide attention. In this paper, the position sensorless control technology of PMSM based on pulse high frequency voltage signal injection method is studied. Firstly, the development status of PMSM and its control technology is summarized, and the existing PMSM position sensorless control technology is introduced emphatically. After the introduction of relevant technical background, the mathematical model of PMSM is established, and the vector control technology of PMSM is theoretically analyzed and simulated, which lays the foundation of the subsequent research on sensorless position control. Then, according to the mathematical model of permanent magnet synchronous motor, the high frequency signal models at low speed and zero speed are derived. The theoretical analysis and simulation of position sensorless control technology of permanent magnet synchronous motor based on pulse high frequency voltage signal injection method are further completed. Then, a theory of error analysis based on harmonic analysis of pulse high frequency voltage is proposed to solve the system error problem of pulse high frequency voltage signal injection method. Through simulation and numerical analysis, the influence of system parameters on the position estimation error of pulse high frequency voltage signal injection method is obtained. The error analysis theory provides a theoretical basis for the selection and optimization of the control parameters of the system related to the pulse high frequency voltage signal injection method. Finally, a sensorless position sensorless control system based on real-time simulator for permanent magnet synchronous motor (PMSM) is proposed, and the design of hardware and software of the system is introduced. In this system, the theories of vector control, sensorless control and position error analysis of PMSM are experimentally studied, and the correctness of the theoretical analysis and simulation are verified.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM341
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本文编号：2260505