无刷双馈电机三电平模糊控制研究.PDFVIP

无刷双馈电机三电平模糊控制研究 刘 岩 张宇献 张志锋 白殿春 （沈阳工业大学 电气工程学院 沈阳 110086） 摘要 提出了一种基于模糊控制方法的无刷双馈电机三电平控制算法。将电机控制绕组中的 磁链误差、转矩误差、磁通角以及中点电位偏差等物理量经模糊化后作为模糊控制器的输入。通 过隶属度函数将输入模糊量进行分级。在模糊控制器中通过建立的规则表并结合定子磁链所在扇 区进行模糊推理.通过模糊控制算法选择适合的电压空间矢量以满足转矩和磁链要求。避免产生过 高的电压幅值跳变，并对中点电压进行有效的控制。最后进行了仿真和分析。 关键词：无刷双馈电机 三电平 模糊控制 中点电位 中图分类号：TM315 Research of Three-Level Fuzzy Control of Brushless double-fed machine Liu Yan Zhang Yuxian Zhang ZhiFeng Bai Dianchun （Shenyang University of Technology Shenyang 110086 China ） Abstract A kind of three level control algorithm based on the fuzzy control method of brushless doubly-fed motor is put forward. It takes the flux linkage error, torque error and flux Angle as well as the neutral voltage deviation and other physical quantities of control winding as the input of fuzzy controller. The input are quantity grading through the fuzzy membership functions . The fuzzy control rules table is established in fuzzy controller. It takes fuzzy Inference based on the stator of flux in the sector. The proper voltage vector was selected in order to satisfies the requirement of torque and flux linkage .To avoid the high voltage amplitude jump, and realize the control of neutral-point unbalancing . Simulation results prove the validity and feasibility of the proposed three -level fuzzy control method. Keywords ：Brushless double-fed machine Three-Level Fuzzy control Medium voltage 量小，降低了交流调速系统的成本。可以运行于同 步、异步、双馈和发电等多种运行状态。无刷双馈 3 引言 [ 1] 电机具有、转矩脉动小和容错能力强等诸多优点 。 近年来，无刷双