电网故障下矩阵变换器与异步电机集成的高性能DTC系统稳定性研究

项目名称： 电网故障下矩阵变换器与异步电机集成的高性能DTC系统稳定性研究

项目编号： No.51277156

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 郭有贵

作者单位： 湘潭大学

项目金额： 78万元

中文摘要： 针对常用的几种变换器在交流调速系统中存在的不足, 将矩阵变换器（MC）的优点与异步电机的直接转矩控制（DTC）方法紧密结合起来，提出了MC-DTC系统,以期达到高性能控制效果。本课题将结合以往研究的基础，建立一个基于矩阵变换器的新型DTC仿真系统和样机系统；运用虚拟矢量磁通控制法、转矩预测控制法、定子电阻模糊控制在线观测器改善系统的低速性能；针对具体的控制对象对模糊控制和神经网络控制算法进行改造以改善系统的调速精度和动态性能。从而改善MC-DTC系统的稳定性。进而针对MC-DTC系统实际运行中可能遇到的人们研究较少的电网故障进行深入研究，找到合适的解决办法以提高MC-DTC系统的抗电网故障干扰性（稳定性）。本课题的实施，将为高性能MC-DTC系统的研究开发提供理论和方法，为矩阵变换器的变频调速系统的推广、应用奠定基础。

中文关键词： 矩阵变换器；直接转矩控制；电网故障；学科建设；研究方法

英文摘要： To the shortcomings of several converters used for alternative current speed adjusting system, a MC-DTC system is proposed to obtain high performance control effects by combination of advantages of matrix converter(MC) with the method of direct torque control(DTC) for induction motor. A simulation system and a prototype system for MC-DTC will be set up respectively on the basis of previous studies in this project; the low performances of MC-DTC system will be improved by virtual flux vector controller, electromagnet torque predictive controller and online fuzzy control observer of stator resistor; fuzzy controller and neural network controller will be made better to raise the accuracy of adjusting speed and dynamic performances respectively of MC-DTC according to the specific control objects. Thus the stability of MC-DTC system will be improved. Further, power grid fauls possibly met and researched less will be studied deeply to find suitable solutions to raise resistance to power grid fault of interference(stability) of MC-DTC system in the actual operation of MC-DTC system. The implementation of this project will provide theories and methods for the research and development of high performance MC-DTC system, and lay good basis for the popularization and application of variable frequency speed control system of

英文关键词： matrix converter；direct torque control；grid faults；subject construction；research method