无刷双馈电机的直接转矩控制系统的研究.pdfVIP

摘 要 无刷电动机在我国应用广泛，在我国工农业生活中占据着不可替代的地位。随着现代 工矿企业对自动化生产的要求越来越高，传统的无刷电机控制方式显示出了它的先天性不 足。而直接转矩控制作为必威体育精装版的电动机控制理论，其在工业应用中有不俗的表现，本篇文 章采用了转矩预测法，在对无刷双馈电机工作原理深入研究的基础上，将其应用于无刷双 馈电机直接转矩控制系统中。 转矩预测法可以有效的解决无刷双馈电机的直接转矩控制系统中的转矩脉动大的问 题。通过对无刷电机数学模型的分析，并且建立等效电路，通过仿真分析说明，这种方法 能有效地改善定子电流波形，减小转矩脉动，且具有良好的动、静态性能。 关键词:无刷双馈电机，等效电路，数学模型，直接转矩控制 I Abstract Brushless motors are widely used in China, in Chinas industrial and agricultural life, occupies an irreplaceable position. With modern automated production of industrial and mining enterprises have become increasingly demanding, the traditional brushless motor control shows a congenital lack of it. And direct torque control as the latest motor control theory, and its industrial applications have good performance, this article uses a torque prediction method, in the BDFM works in-depth study, based on its used BDFM direct torque control system. Torque prediction method can effectively solve the BDFM direct torque control system of the torque ripple of the issues. Mathematical model of the brushless motor through the analysis and the establishment of the equivalent circuit, through simulation analysis shows that this method can effectively improve the stator current waveform, reducing the torque ripple, and has a good dynamic and static performance. Keywords: brushless doubly-fed machine, the equivalent circuit, the mathematical model, the direct torque control