| Abstract |
When the dynamic requirements are not too high, and the good efficiency is important, instead of the complicated field oriented control a more simple control method is suggested. The original idea of slip frequency control is improved, taking into consideration the changing of the resistance. Direct open-control of firing during transient conditions is used to improve dynamic behaviour. Rules to select the proper sampling rate for speed control is suggested. The control is fully realized by a microcomputer. The most interesting operating conditions (starting, breaking, speed reversal) were examined and recorded. Recorded time functions and Park-vector loci are presented. The experimental results indicate a stable operation and a good
dynamic response. |
