Title :
A fuzzy DTC method with a SVM defuzzification to permanent magnet synchronous machine
Author :
Jin, Mengjia ; Qiu, Jianqi ; Shi, Cenwei ; Lin, Ruiguang
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A fuzzy direct torque control (DTC) algorithm to permanent magnet synchronous motor (PMSM) with a novel space vector modulation (SVM) defuzzification is proposed. The defuzzification unit outputs a vector contains two voltage vectors as well as the duty of each vector instead of a single vector. And more voltage vectors can be obtained. A simulation model is built up, basic DTC and conventional fuzzy DTC and proposed fuzzy DTC are carried out respectively. Torque ripple, flux ripple and current distortion are compared and analyzed. The proposed fuzzy controller makes the torque and flux ripples lower and current smoother compared with basic DTC and conventional fuzzy DTC.
Keywords :
fuzzy control; machine vector control; modulation; permanent magnet motors; synchronous motors; torque control; PMSM; SVM; current distortion; defuzzification; flux ripple; fuzzy controller; fuzzy direct torque control; permanent magnet synchronous motor; space vector modulation; torque ripple; voltage vector; Couplings; Fuzzy control; Fuzzy logic; Fuzzy reasoning; Permanent magnet machines; Rotors; Stators; Support vector machines; Torque control; Voltage;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1432324
