Induction motor drive based on direct torque controlled used multi-pulse AC-DC rectifier

Abstract

This paper presents the direct torque-controlled induction motor drives (DTCIMDs) based on a retrofit 44-pulse rectifier (44PR). A 22-phase polygon autotransformer (PA) is designed to supply the rectifiers. The above structure improves the power quality standards in the power grid and complies with the requirements of the IEEE-519 standard for different loads. Besides, a power factor close to one is obtained for a wide range of DTCIMD performance. The results show that the total harmonic distortion (THD) of the input current under variable loads for 44PR is less than 3%.

Sensorless Control of Induction Motor Based on Differential Flatness Theory and Reduced MRAS Observer

“…A large part of the proposed methods is based on observers depending on the model of the asynchronous machine (Vasu, Thalluru, & Kumar, 2021), (Adamczyk & Orlowska-Kowalska, 2021;Al-Rouh, 2004;Comanescu, 2016;De Wit, Ortega, & Mareels, 1996;Manceur, 2012;Morand, 2005;Beddiaf Yassine, Fatiha, & Chrifi-Alaoui;Zbede, Gadoue, & Atkinson, 2016). Other research is on the contribution of artificial intelligence to improve sensorless control of the machine (Abdollahi, 2021) (Chang, Espinosa-Perez, Mendes, & Ortega, 2000;De Doncker & Novotny, 1994;Hussein, Ammar, & Hassan, 2017;Ismail, 2012;Lorenz, Lipo, & Novotny, 1994). In paper (Enany, Wahba, & Hassan, 2014) the author proposes a new technique to model the stator winding, for using to validate a remote and sensorless stator winding temperature estimation technique.…”