开关磁阻电机在自备电源系统中的应用研究

发布时间：2019-03-06 19:01

【摘要】：自备电源系统是将一种能量转换成为用户所需电能的转换载体。一般而言该种系统有两种结构模式，第一种结构为通过燃油机组带动中频发电机，在经过电力变换输出用户所需电能；第二种结构为以工业电网为自备电源系统的电源，在经过电力变换输出用户所需要的电能。应用的场合决定了自备电源系统的基本结构，从某种意义上说基本结构的选择是整个自备电源系统的基础，其可靠性和稳定性决定了用户的电能质量。为了让自备电源系统的使用场合更广泛，本课题选择柴油机组作为系统的能量输出载体，并在此基础上外设多个能量转换单元，包括中频发电机，驱动电机，高压发电机和高压充电器，利用以上多种设备最后完成电能的变化。本文主要研究驱动电机部分。驱动电机是连接中频发电机和高压发电机的桥梁，也是系统运行的关键部件，其性能是否达标直接决定了输出电能品质的高低。本文先将几种常用结构的电机进行对比分析，结合自备电源系统的特点，，选择了开关磁阻电机作为自备电源系统的驱动电机，详细分析了该种电机在本系统中的优势。然后介绍了开关磁阻电机在国内、外的发展状况和应用前景，详细分析了开关磁阻电机的数学模型，并根据其数学模型和传统控制方式，确定了本课题开关磁阻电机的控制方式：基于双闭环的电流斩波和角度位置控制方式。通过Matlab仿真软件进行了电机驱动系统的仿真，并对样机进行了试验。在试验中风摩损耗是制约开关磁阻电机转速上升的主要因素，因此针对风摩损耗对电机进行了改造，将设备改造成一体化真空系统。文章最后编辑了上位机软件，利用串口连接计算机与DSP控制板，实现了虚拟仪器的可视化。
[Abstract]:The self-provided power supply system is a kind of conversion carrier that converts the energy into the electric energy required by the user. Generally speaking, the system has two structural modes. The first structure is to drive the intermediate frequency generator through the fuel oil unit, and output the electric energy required by the user through the power transformation. The second structure is the power supply with industrial grid as the self-provided power system, which outputs the power needed by the user through the power conversion. The application situation determines the basic structure of the self-provided power system. In a sense, the choice of the basic structure is the basis of the whole self-provided power system, and its reliability and stability determine the power quality of the user. In order to make the self-provided power supply system more widely used, diesel generator set is chosen as the energy output carrier of the system, and on this basis, there are many energy conversion units, including intermediate frequency generator, driving motor, and so on. High-voltage generators and high-voltage chargers, using the above-mentioned equipment to complete the final change of electrical energy. This paper mainly studies the drive motor. The drive motor is the bridge connecting the intermediate frequency generator and the high voltage generator, and it is also the key component of the system operation. The performance of the drive motor determines the output power quality directly. According to the characteristics of self-supplied power supply system, switched reluctance motor is selected as the driving motor of self-provided power supply system, and the advantages of this kind of motor in this system are analyzed in detail. Then the development and application prospect of switched reluctance motor at home and abroad are introduced. The mathematical model of switched reluctance motor is analyzed in detail, and according to its mathematical model and traditional control mode, The control mode of switched reluctance motor (SRM) is determined: current chopping and angle position control based on double closed loop. The motor driving system is simulated by Matlab simulation software, and the prototype is tested. The stroke friction loss is the main factor that restricts the speed increase of switched reluctance motor in the experiment. Therefore, the motor is reformed according to the wind friction loss, and the equipment is transformed into an integrated vacuum system. Finally, the software of upper computer is edited, and the visualization of virtual instrument is realized by connecting computer and DSP control board through serial port.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM352

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