Title :
Start up of a global direct torque control system
Author :
Zolghadri, M.R. ; Pelissou, C. ; Roye, D.
Author_Institution :
CNRS, Univ. Joseph Fourier, Grenoble, France
Abstract :
Direct torque control (DTC) can be used for AC machine drives. In a synchronous machine the initial flux depends on the rotor position. Thus in a sensorless DTC synchronous machine drive system the initial flux should be known. To solve the problem of initial flux, a quasi-integrator is proposed. Using this filter, the synchronous machine can be started up with a nonprecise known initial flux. The final estimated flux is very close to the machine flux
Keywords :
synchronous motor drives; AC machine drives; estimated flux; filter; global direct torque control; initial flux; quasi-integrator; rotor position; start up; synchronous machine; AC machines; Control systems; Current measurement; Filters; Pulse width modulation; Stators; Synchronous machines; Torque control; Torque measurement; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548606
