基于模糊逻辑和重构电压矢量的双Y移30°PMSM直接转矩控制  

Direct Torque Control for Dual Y Shift 30 Degree Permanent-magnet Synchronous Motor Based on Fuzzy Logic and Rebuilding Voltage Vector

作　　者：孟超[1] 欧阳红林[1] 刘鼎 邵志敏[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082 [2]湖南娄底电业局,湖南省娄底市417000

出　　处：《中国电机工程学报》2011年第24期59-67,共9页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2006AA05Z401)~~

摘　　要：对双Y移30°PMSM的数学模型和直接转矩控制系统进行了详细描述。针对双Y移30°PMSM直接转矩控制中转矩脉动和存在k=6m±1(m=1,3,5...)次谐波电流问题,提出一种基于模糊逻辑和重构电压矢量的双Y移30°PMSM直接转矩控制策略。首先,利用脉宽调制技术对逆变器输出的原始电压矢量进行重构,对z1?z2平面上的电压矢量进行优化,从而减小k=6m±1(m=1,3,5...)次谐波电流损耗;其次,为了能够充分利用重构的不同电压矢量对定子磁链和转矩产生的影响,构建了基于模糊逻辑的电压矢量选择控制器,用以替代传统的滞环比较器和开关表。仿真和实验结果证实提出方法的正确性和可行性。Mathematical model and direct torque control （DTC） strategy for dual Y shift 30 degree permanent-magnet synchronous motor were elaborated. Considering the problem of torque ripples and harmonic currents with k=-6m±1 （m=1,3,5...）,a novel direct torque control strategy, which based on fuzzy logic and rebuilding voltage vector, was proposed for dual Y shift 30 degree PMSM. Firstly, pulse width modulation was utilized to rebuild voltage vector in order to reduce the influence of k=6m±1（m=1,3,5...） harmonic currents on Z1--Z2 plane. Secondly, the different rebuilding voltage vector had the effect on the stator flux linkage and torque. In order to take full advantage of the impact, this paper presented voltage vector choice controller, which based on fuzzy logic, instead of the hysteresis controllers and the switching table. Simulation and experimental results demonstrated the effectiveness and feasibility of the proposed method.

关 键 词：双Y移30°永磁同步电动机 脉宽调制 直接转矩控制 模糊逻辑 重构电压矢量 

分 类 号：TM344[电气工程—电机]