Research on Direct Torque Control Technology Based on Fuzzy Space Vector Modulation
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 SVM-DTC 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.
万方数据
维普
