无轴承永磁同步电机悬浮力建模及运行控制研究

发布时间：2018-01-02 06:27

本文关键词：无轴承永磁同步电机悬浮力建模及运行控制研究　出处：《江苏大学》2016年硕士论文　论文类型：学位论文

【摘要】：无轴承永磁同步电机(BPMSM)集磁轴承和永磁同步电机的性能于一体,既传承了磁轴承的无机械接触、无需润滑、使用寿命长等特性,又具有永磁同步电机的结构简单、体积小、能量密度高及效率高等特征。近年来,BPMSM相关理论得到不断完善,在化工、半导体工业、生命科学、飞轮储能及电动汽车等领域具有潜在的应用价值。本论文在江苏省“333工程”(2014)、江苏省高校科研成果产业化推进工程(JHB2012-39)及“青蓝工程”的支持下,围绕BPMSM的悬浮力产生机理、精确数学模型及非线性动态解耦控制等方面开展了较为深入的研究。本论文的研究内容可分为如下四个部分:1.由于径向悬浮力与转矩控制之间存在着强耦合关系,为简化BPMSM的控制系统复杂性,本文提出了磁场等效电流概念,并对BPMSM转矩和悬浮力产生机理进行了详细分析,并推导出获得恒定方向悬浮力的必要条件。2.建立了考虑到转子偏心位移及径向洛伦兹力影响的精确数学模型,并借助电磁分析仿真软件ANSYS/Maxwell对BPMSM气隙空间内磁通密度分布,悬浮特性进行了分析,验证了数学模型的通用性、准确性及可靠性。基于磁场等效电流分析方法,就空载及带载情况下BPMSM悬浮力的控制方法进行了分析,并构建了BPMSM系统控制框图,为转子径向可控悬浮运行提供了理论依据。3.结合神经网络逆思想和模糊PID控制理论,本论文提出了一种复合型神经网络逆非线性解耦控制方法。基于该控制方法,可将BPMSM系统等效为3个积分线性子系统,分别为x方向径向位移子系统、y方向径向位移子系统以及转子旋转速度子系统。采用Matlab/Simulink构建了BPMSM非线性动态解耦控制系统的仿真模型,仿真结果表明该控制方法具有良好的动态解耦特性及更好的鲁棒性能。4.基于运行原理及设计需求,给出了BPMSM控制系统的软、硬件设计方案,并基于DSP TMS320F2812构建了数字控制实验平台。在该实验平台上进行了硬件电路调试、电机旋转测试、转子动静态悬浮实验及抗干扰性能测试,并对实验结果进行了分析研究,验证了控制方法的正确性及可行性。
[Abstract]:The bearingless permanent magnet synchronous motor (BPMSM) in magnetic bearing He Yongci synchronous motor performance in one, not only inherits the magnetic bearing without mechanical contact, no lubrication, long life and other characteristics, but also has the permanent magnet synchronous motor has the advantages of simple structure, small volume, high energy density and high efficiency characteristics in recent years., BPMSM theory has been perfected, in the chemical industry, semiconductor industry, life science, has the potential application value of flywheel energy storage and electric vehicles and other fields. In this paper, Jiangsu Province, "333 project" (2014), Jiangsu province university scientific research industry promotion project (JHB2012-39) and "Blue Project" support next, around the suspension force generation mechanism of BPMSM, to carry out in-depth research on accurate mathematical model and nonlinear dynamic decoupling control. The research contents of this thesis can be divided into four parts as follows: 1. by radial levitation force and torque There is a strong coupling between the control, for the complexity of the control system of simplified BPMSM is proposed in this paper, the magnetic field and the concept of equivalent current, BPMSM torque and suspension force generation mechanism is analyzed in detail, and the necessary conditions are derived to obtain constant levitation force direction.2. is established considering the accurate mathematical model of rotor eccentric displacement and radial force of Lorenz the influence of the electromagnetic simulation software ANSYS/Maxwell and analysis of flux density distribution of BPMSM air gap space, suspension characteristics were analyzed, verified the general mathematical model, accuracy and reliability. The analysis method based on equivalent current magnetic field, no-load and load control method under the condition of BPMSM suspension was analyzed, and the construction of the block diagram of the control system for BPMSM, controllable rotor radial suspension operation provides a theoretical basis for the combination of.3. neural network inverse theory and fuzzy PID control theory, This paper presents a nonlinear inverse decoupling control method of a composite neural network. The control method based on the BPMSM system is equivalent to a score of 3 linear subsystems, respectively X direction of the radial displacement subsystem, y subsystem and the direction of the radial displacement of the rotor rotation speed subsystem. Build a simulation model of BPMSM nonlinear dynamic decoupling the control system using Matlab/Simulink, simulation results show that the robust performance of the.4. control method has better dynamic decoupling characteristics and good operation principle and design requirements are given based on BPMSM control system software, hardware design scheme, and based on the DSP TMS320F2812 to build a digital control experimental platform. The experimental platform of hardware circuit debugging, motor rotation test, rotor static experiment and anti-jamming performance testing, and analyses the experimental results, verify the control The correctness and feasibility of the law.

【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM341

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