Title :
Flux estimation by asymmetric carrier injection for sensorless direct torque control of PMSM
Author :
Ghazimoghadam, M.A. ; Tahami, F.
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
The combination of direct torque control and permanent magnet synchronous motors (PMSMs) provides a highly dynamic drive. In this paper direct torque control method of PMSM is merged with a sensorless control algorithm and a robust flux observer is proposed which results in a high performance highly reliable drive. First a high frequency signal injection method within DTC algorithm is introduced to estimate the rotor position of PMSM. Then the method is modified in order to estimate stator dynamic inductances. The stator inductances are then used in a current model flux observer.
Keywords :
machine control; permanent magnet motors; synchronous motors; torque control; PMSM; asymmetric carrier injection; flux estimation; permanent magnet synchronous motors; robust flux observer; rotor; sensorless direct torque control; stator dynamic inductances; Observers; Robustness; alternating carrier injection; direct torque contro; flux observer; permanent magnet synchronous machine; sensorless control;
Conference_Titel :
Power Electronics and Drive Systems Technology (PEDSTC), 2012 3rd
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-0111-4
DOI :
10.1109/PEDSTC.2012.6183374
