Title :
Control loop study of a load commutated CSI-fed induction motor
Author :
Song, J.-H. ; Yoon, T.-W. ; Kim, Ki-Beom ; Kim, K.H. ; Youn, M.J.
Author_Institution :
Control Syst. Lab., KIST, Seoul, South Korea
fDate :
5/1/1992 12:00:00 AM
Abstract :
The authors present a systematic study for the induction motor drive system using a load commutated current source inverter (LCCSI). The steady state characteristics of a LCCSI-fed induction motor are shown to be the intermediate characteristics between the voltage source inverter (VSI) and the autosequentially commutated current source inverter (ASCI) systems. The dynamic characteristics of the LCCSI-fed induction motor are also investigated using a linearised model and the system control loops without a speed sensor are discussed. A study through the pole/zero locations of the linearised system shows that a V/Hz ratio feedback loop plays an essential role in the system stabilisation
Keywords :
induction motors; invertors; machine control; LCCSI-fed induction motor; control loops; dynamic characteristics; induction motor drive system; linearised model; load commutated current source inverter; pole/zero locations; steady state characteristics; voltage/frequency ratio feedback loop;
Journal_Title :
Electric Power Applications, IEE Proceedings B
