Title :
Sensorless switching-table-based direct torque control for dual three-phase PMSM drives
Author :
Almarhoon, Ali H. ; Ren, Yi ; Zhu, Z.Q.
Author_Institution :
Dept. of Electonic & Electriacl Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
The inherent harmonic currents in conventional switching-table-based DTC (ST-DTC) for dual three-phase PMSM can affect its sensorless control performance, but it can be reduced by utilizing a modified switching-table strategy. In this paper, the influence of non-sinusoidal stator currents on the position and speed estimation accuracy for conventional flux-linkage observer (FO) and simplified Extended Kalman Filter (EKF) is investigated. Experimental results verify that the simplified EKF show better position and speed estimations due to its higher noise-rejection ability.
Keywords :
Kalman filters; permanent magnet machines; sensorless machine control; stators; synchronous motor drives; torque control; dual three-phase PMSM drives; extended Kalman filter; flux-linkage observer; nonsinusoidal stator currents; sensorless switching-table-based direct torque control; Observers; Rotors; Sensorless control; Stator windings; Torque; Vectors; direct torque control (DTC); flux-linkage observer (FO); permanent magnet synchronous machines (PMSM); simplified Extended Kalman Filter (EKF);
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013736
