电动汽车永磁同步电机驱动控制器的设计

发布时间：2018-03-14 21:32

本文选题：电动汽车　切入点：永磁同步电机　出处：《苏州大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着世界环境污染的日益严重和能源危机的不断加剧,电动汽车的发展越来越受到人们的关注,众多汽车厂商不断推出新型的电动汽车。近年来,我国在电动汽车领域投入了大量研发和生产,获得多项自主知识产权,促进汽车新能源的推广电动汽车的核心部件是电机驱动系统,其驱动特性决定了车辆行驶的主要性能指标。永磁同步电机具有体积小、控制精度高、转矩密度高、功率因数高、调速范围宽等优点,目前已广泛应用于电动汽车驱动系统。为了充分发挥永磁同步电机的优异性能,需要良好的电机驱动控制技术。本课题以苏州和鑫电气公司的50k W内置式永磁同步电机为被控对象,研制电动汽车永磁同步电机驱动控制器。本文的研究内容如下:本文首先建立了永磁同步电机的数学模型,分析了永磁同步电机的矢量控制原理,并针对电动汽车的应用特点,选择合适的电流矢量控制策略,提出了对输入期望转矩的最大转矩电流比和弱磁控制实现方法。另外,作为矢量控制重要组成部分的空间矢量脉冲宽度调制,本文详细介绍了其原理和实现方法。本文设计了永磁同步电机驱动控制器的硬件电路,主要包括:主控板和驱动板。主控板是系统的控制核心,实现信号采集、数据处理、算法实现、控制输出、对外通信等功能;驱动板接收主控板发来的控制信号,对SVPWM信号进行隔离的功率放大,控制IGBT打开/关断,实现对电机的控制。软件设计在TMS320F28335的CCS3.3环境,基于C语音实现全数字矢量控制算法。最后,基于搭建的电机控制测试平台,对电机及其驱动控制器进行测试验证,并对实验结果进行分析。分析测试结果表明:本文设计的电动汽车永磁同步电机驱动控制器具有可靠性高、调速宽等特点。
[Abstract]:With the increasing environmental pollution and energy crisis in the world, people pay more and more attention to the development of electric vehicles. In recent years, many automobile manufacturers continue to introduce new electric vehicles. Our country has invested a lot of R & D and production in the field of electric vehicle, obtained many independent intellectual property rights, and promoted the promotion of new energy of automobile. The core component of electric vehicle is motor drive system. PMSM has the advantages of small size, high control precision, high torque density, high power factor, wide speed range and so on. At present, it has been widely used in electric vehicle drive system. In order to give full play to the excellent performance of permanent magnet synchronous motor (PMSM), Good motor drive and control technology is needed. This subject takes 50kW built-in permanent magnet synchronous motor (PMSM) of Suzhou Hexin Electric Company as the controlled object. The main contents of this paper are as follows: firstly, the mathematical model of permanent magnet synchronous motor (PMSM) is established, and the vector control principle of PMSM is analyzed. In addition, the space vector pulse width modulation, which is an important part of vector control, is proposed to realize the maximum torque / current ratio and weak magnetic field control of input expected torque. The hardware circuit of the PMSM driving controller is designed, which includes the main control board and the drive board. The main control board is the control core of the system, which realizes the signal acquisition and data processing. The driver board receives the control signal from the main control board, amplifies the SVPWM signal, controls the IGBT turn on / off, realizes the control of the motor. The software is designed in the CCS3.3 environment of TMS320F28335. The whole digital vector control algorithm is realized based on C speech. Finally, the motor and its driving controller are tested and verified based on the motor control test platform. The experimental results show that the PMSM drive controller designed in this paper has the characteristics of high reliability and wide speed regulation.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM341;U469.72

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