Title :
Voltage sag drop in speed minimization in modern adjustable speed drives
Author :
Petronijevic, M.P. ; Jeftenic, B.I. ; Mitrovic, N.M. ; Kostic, V.Z.
Author_Institution :
Power Dept., Faculty of Electron. Eng., Serbia
Abstract :
This paper researches behavior of rotor field oriented (RFO) and direct torque controlled (DTC) drives in speed controlled application in voltage sags circumstances. Problems in application are able to appear, especially in work cases with speed and torque close to rated, even in a case when typical voltage tolerance curves show no drive trips. To overcome appeared drop in speed it was posed a field weakening algorithm during voltage sag. Analytic calculation and numerical simulation were presented in detail in this work. Knowing delay in RFO flux response and prompt DTC flux recall, methods for dynamic performance improving were advised.
Keywords :
angular velocity control; machine control; numerical analysis; power supply quality; rotors; torque control; variable speed drives; adjustable speed drives; direct torque controlled drives; field weakening algorithm; numerical simulation; rotor field oriented drives; speed controlled application; speed minimization; voltage sag drop; voltage tolerance curves; Circuits; Delay; Minimization methods; Power quality; Power supplies; Protection; Torque control; Variable speed drives; Voltage control; Voltage fluctuations;
Conference_Titel :
Industrial Electronics, 2005. ISIE 2005. Proceedings of the IEEE International Symposium on
Conference_Location :
Dubrovnik, Croatia
Print_ISBN :
0-7803-8738-4
DOI :
10.1109/ISIE.2005.1529048
