基于模糊空间矢量调制直接转矩控制技术研究  

Research on Direct Torque Control Technology Based on Fuzzy Space Vector Modulation

作　　者：金国义 JIN Guoyi(Zhuhai Gree Electrical Appliance Co.,Ltd.,Zhuhai,Guangdong 519000,China)

机构地区：[1]珠海格力电器股份有限公司,广东珠海519000

出　　处：《自动化应用》2024年第17期66-68,72,共4页Automation Application

摘　　要：针对SVM-DTC系统电机中低速运行存在电磁转矩脉动大的问题,提出了一种基于模糊SVM-DTC方法。通过优化电压空间矢量合成方法,细化电压空间矢量参数表,构建模糊磁链控制器模型和模糊转矩控制器模型,并将2个模糊控制器模型替换到SVM-DTC系统的PI控制器模型。通过理论分析和仿真对比模糊SVM-DTC模型和SVM-DTC模型,验证了模糊SVM-DTC系统的优越性。结果表明,交流电机在中低转速下,模糊SVM-DTC电机电流平滑,定子磁链光滑,电磁转矩脉动变小,电机转速平稳。A fuzzy SVM-DTC method is proposed to address the issue of large electromagnetic torque ripple in the low-speed operation of SVM-DTC system motors.By optimizing the voltage space vector synthesis method,refining the voltage space vector parameter table,constructing a fuzzy magnetic flux controller model and a fuzzy torque controller model,and replacing the two fuzzy controller models with the PI controller model of the SVM-DTC system.The superiority of the fuzzy SVM-DTC system was verified through theoretical analysis and simulation comparison between the fuzzy SVM-DTC model and the SVMDTC model.The results show that at low and medium speeds,the fuzzy SVM-DTC motor has smooth current,smooth stator flux,reduced electromagnetic torque ripple,and stable motor speed.

关 键 词：模糊控制器 直接转矩控制 交流电机 空间矢量调制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]