Title :
Fully digital implementation of PMSM servo based on a novel current control strategy
Author :
Wu, Jia ; Zhang, Dongsheng ; Li, Yongdong
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel current control strategy for use in fully digital control of permanent magnet synchronous motor (PMSM) servo drive systems is presented. This digital current control strategy is based on information about three-phase current errors. There is no need to know precise motor parameters. It also requires no complex calculation such as motor counter EMF calculations. The sequence of output voltage vectors can be selected intelligently so that the number of switching is significantly minimized. The practical servomotor drive system adopting this current controller is designed with an Intel 87C196KC as its control core part and with a third generation intelligent power module (IPM) as power switches of the inverter. Simulation and experimental results show that the practical system has satisfactory static and dynamic performance
Keywords :
control system analysis; digital control; electric current control; invertors; machine control; machine testing; machine theory; permanent magnet motors; power engineering computing; servomotors; synchronous motor drives; Intel 87C196KC; digital current control strategy; dynamic performance; intelligent power module; invertor power switches; output voltage vectors; permanent magnet synchronous servomotor drives; static performance; switching minimisation; three-phase current errors; Control systems; Counting circuits; Current control; Digital control; Error correction; Permanent magnet motors; Servomechanisms; Servomotors; Synchronous motors; Voltage;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.645599
