无刷双馈发电机不依赖参数的矢量控制策略  

Parameter-Independent Vector Control Strategy for Brushless Doubly Fed Generator

作　　者：段琦玮 刘石[1] 龙腾[2] DUAN Qiwei;LIU Shi;LONG Teng(School of Energy,Power and Mechanical Ngineering,North China Electric Power University,Beijing 102206,China;Department of Engineering,University of Cambridge,Cambridge CB21TN,UK)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]剑桥大学工程系

出　　处：《自动化仪表》2018年第5期38-43,共6页Process Automation Instrumentation

摘　　要：通过对无刷双馈发电机的功率绕组电压定向的统一矢量模型进行研究,提出了一种不依赖电机参数的矢量控制策略。该控制方法通过控制控制绕组的d轴和q轴电压分量来分别控制无刷双馈发电机的有功功率和无功功率,同时针对两定子d轴和q轴变量之间的交叉耦合问题加入了补偿模块。相比其他补偿策略,该补偿模块更加容易计算和实现。该控制策略不需要使用电机参数,避免了电机运行过程中因参数变化带来的控制精度下降问题。为了验证所提出的控制策略的性能,搭建了变频调速试验平台。试验结果证明了该控制方法具有良好的控制性能和解耦性能。By researching the unified vector model of the power winding voltage orientation of the brushless doubly-fed generator（BDFG）,a vector control strategy that does not rely on motor parameters is proposed.With this control method,the active powerand reactive power of the BDFG can be respectively controlled by controlling the d-axis and q-axis voltage of the controlwindings; and for the cross coupling between d-axis and q-axis variables of the two stators,the compensation module is added.This compensation module is easier to calculate and implement than other compensation strategies.The control strategy does notrequire the use of motor parameters,which reduces the control accuracy caused by the parameter changes that occur during theoperation of the motor.An experimental platform has been built to validate the performance of the proposed control strategy; theexperimental results prove that the proposed control method offers both good control and decoupling performance.

关 键 词：风力发电 矢量控制 定子电压定向坐标系 无刷双馈发电机 特殊笼型转子 变频调速试验系统 

分 类 号：TH183.3[机械工程—机械制造及自动化] TP214.5[自动化与计算机技术—检测技术与自动化装置]