Title :
A novel sensorless direct torque control for matrix converter-fed IPM synchronous machine
Author :
Xiao, D. ; Rahman, M.F.
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
A new sensorless direct torque control scheme for matrix converter-fed interior permanent magnet synchronous machine is investigated in this paper. Comparing to the classical DTC, the proposed scheme features in low ripples in torque and flux, fixed switching frequency and unity input power factor. Moreover, it significantly reduces the harmonics in the input current even with a small input filter. An adaptive observer is used for the joint estimation of stator flux and rotor speed. The sensorless DTC drive is capable of exhibiting high dynamic and steady-state performance. Experimental results confirm the effectiveness of the proposed method.
Keywords :
electric drives; matrix convertors; observers; permanent magnet machines; power factor; power harmonic filters; sensorless machine control; synchronous machines; torque control; adaptive observer; fixed switching frequency; input current harmonics reduction; matrix converter drive; matrix converter-fed IPM synchronous machine; matrix converter-fed interior permanent magnet synchronous machine; rotor speed estimation; sensorless DTC scheme; sensorless direct torque control scheme; small input filter; stator flux estimation; torque ripple; unity input power factor; Matrix converters; Power harmonic filters; Reactive power; Stators; Switches; Torque; Vectors;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073477