Title :
A New Scheme to Direct Torque Control of Interior Permanent Magnet Synchronous Machine Drives for Constant Inverter Switching Frequency and Low Torque Ripple
Author :
Zhang, Jun ; Rahman, M. Faz ; Grantham, Colin
Author_Institution :
Sch. of Electr. Eng. & Telecommun., New South Wales Univ., Sydney, NSW
Abstract :
This paper presents a new direct torque control (DTC) scheme based on space vector modulation (SVM) for interior permanent magnet synchronous machine (IPMSM) drives. The new scheme provides a variable option for the improvement of DTC controlled IPMSM. Closed-loop control of both torque and flux is developed with two proportional-integral (PI) controllers. The stator voltage is generator through SVM unit. The torque and flux ripples are greatly reduced with fixed inverter switching frequency comparing with classical switching-table based DTC scheme. The analysis of the control principle provides a guide to design the controller parameters. Modeling results confirm the effectiveness of the proposed scheme
Keywords :
PI control; closed loop systems; invertors; machine control; modulation; permanent magnet motors; synchronous motor drives; torque control; DTC scheme; IPMSM drives; SVM; closed-loop control; direct torque control; fixed inverter switching frequency; interior permanent magnet synchronous machine; low torque ripple; proportional-integral controller; space vector modulation; stator voltage; Inverters; Magnetic modulators; Magnetic variables control; Permanent magnet machines; Pi control; Proportional control; Stators; Support vector machines; Switching frequency; Torque control; Direct torque control; Permanent Magnet Synchronous Machine; Space Vector Modulation;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4778323
