基于磁链预测的永磁直驱风力发电机SVM-DTC技术  

SVM-DTC technology of permanent magnet direct drive wind turbine based on flux linkage prediction

作　　者：单立宇 张兰红[2] 陈小海 SHAN Liyu;ZHANG Lanhong;CHEN Xiaohai(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China;School of Electrical Engineering,Yancheng Institute of Technology,Yancheng 224051,China;Jiangsu Goldwind Technology Co.,Ltd.,Yancheng 224051,China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]盐城工学院电气工程学院,江苏盐城224051 [3]江苏金风科技有限公司,江苏盐城224051

出　　处：《电子设计工程》2023年第4期62-67,共6页Electronic Design Engineering

摘　　要：永磁直驱风力发电机传统直接转矩控制(DTC)通过查表法选择固定电压矢量来控制定子磁链和电磁转矩,导致磁链和转矩的双重控制要求不能同时兼顾,造成磁链和转矩脉动过大。针对传统DTC的不足,研究了一种永磁直驱风力发电机基于定子磁链预测的空间矢量脉宽调制(SVPWM)DTC方法,通过对下一个控制周期磁链矢量的预测计算需要补偿的电压矢量,并引入SVPWM模块代替查表法来合成该电压矢量。仿真和实验结果表明,此方案能明显降低磁链和转矩脉动,改善永磁直驱风力发电系统的控制性能。The traditional Direct Torque Control(DTC) of permanent magnet direct-drive wind turbines selects a fixed voltage vector to control the stator flux linkage and electromagnetic torque through the lookup table method,which results in the dual control requirements of the flux linkage and torque cannot be taken into account at the same time,resulting in the flux linkage and torque ripple are too large. Aiming at the shortcomings of traditional DTC,a Space Vector Pulse Width Modulation(SVPWM) DTC method based on stator flux linkage prediction for permanent magnet direct drive wind turbines is studied. The voltage that needs to be compensated is calculated by predicting the flux linkage vector of the next control period,and introduce the SVPWM module instead of the look-up table method to synthesize the voltage vector. The simulation and experimental results show that this scheme can significantly reduce the flux linkage and torque ripple,and improve the control performance of the permanent magnet direct-drive wind power generation system.

关 键 词：永磁直驱风力发电机 直接转矩控制 转矩脉动 SVPWM 磁链预测 

分 类 号：TM351[电气工程—电机]