Authors: Yassine Beddiaf; Fatiha Zidani; Larbi Chrifi-Alaoui; Saïd Drid
Addresses: Department of Electrical Engineering, Faculty of Engineering, University of Khenchla, Khenchla, Algeria ' Electrical Engineering Department, LSPIE Laboratory, Faculty of Engineering, University of Batna, Rue Med El-Hadi Boukhlouf, Batna 05000, Algeria ' Laboratoire des Technologies Innovantes (LTI, EA 3899), University of Picardie Jules Verne, 13 Avenue F. Mitterrand, 02880, Cuffies, France ' Electrical Engineering Department, LSPIE Laboratory, Faculty of Engineering, University of Batna, Rue Med El-Hadi Boukhlouf, Batna 05000, Algeria
Abstract: This paper presents an improved method of stator angular (frequency) θs estimation for sensorless indirect oriented field control of induction motors based on a phase locked loop (PLL). A PLL is used to estimate the stator voltage angular frequency taking account only the reference speed. A reduced-order observer is used to estimate speed and rotor flux. Extensive simulation and experimental tests confirm the effectiveness of the proposed approach.
Keywords: induction motors; phase locked loop; PLL; indirect field oriented control; IFOC; reduced-order observer; sensorless control; induction motor drives; stator voltage angular frequency; speed; rotor flux.
International Journal of Modelling, Identification and Control, 2016 Vol.25 No.4, pp.273 - 286
Accepted: 29 Sep 2015
Published online: 01 Jun 2016 *