Title :
Improving the start and restart behavior through state recognition of AC drives
Author :
Pan, Hangwen ; Springob, Lothar ; Holtz, Joachim
Author_Institution :
Wuppertal Univ., Germany
Abstract :
The paper presents control strategies for abnormal operating conditions of AC motor drive systems. These improve the total performance as well as the ruggedness of the system. Two methods to start a rotating motor through state recognition are described. Two cases are distinguished according to whether the back EMF exists or not. In either case, normal operation can be reestablished as fast as possible on return of the power supply following a power interruption. Discussions and experimental results are presented for both failure conditions, based on V/f control and on sensorless field oriented control
Keywords :
AC motor drives; control system analysis; control system synthesis; electric current control; frequency control; machine control; machine testing; machine theory; starting; voltage control; AC motor drive systems; V/f control; abnormal operating conditions; back EMF; control simulation; control strategies; current control design; failure conditions; power interruption; power supply restoration; restarting behavior improvement; sensorless field oriented control; starting behavior improvement; state recognition; Air gaps; Circuits; Control systems; Frequency; Induction motors; Power supplies; Production; Pulse width modulation inverters; Sensorless control; Voltage;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638246
