Direct Torque Control of Permanent Magnet Synchronous Motors With Non-Sinusoidal Back-EMF. (May 2008) Salih Baris Ozturk, B.S., Istanbul Technical University, Istanbul, Turkey; M.S., Texas A&M University, College Station Chair of Advisory Committee: Dr. Hamid A. Toliyat This work presents the direct torque control (DTC) techniques, implemented in fourand six-switch inverter, for brushless dc (B...

This paper introduces the indicators for surge arrester condition assessment based on the leakage current analysis. Maximum amplitude of fundamental harmonic of the resistive leakage current, maximum amplitude of third harmonic of the resistive leakage current and maximum amplitude of fundamental harmonic of the capacitive leakage current were used as indicators for surge arrester condition mon...

Axial-flux permanent magnet (AFPM) machines are gaining popularity in low-speed and high torque applications due to their density, efficiency, compact structure. In this article, a dual-rotor slotless AFPM (DRSAFPM) machine equipped with equidirectional toroidal winding (EDTW) is proposed compared that conventional single-layer double-layer concentrated windings (CWs). First, the differences be...

This paper presents a novel means of sensorless drive the winding segmented permanent magnet linear motor (WS-PMLM). In order to solve problem deviation position and speed estimation mover caused by sharp changes inductance, flux linkage, back electromotive force (EMF) between segments WS-PMLM, method for compound back-EMF is proposed eliminate blind spot intersegment estimation. terms estimati...

This paper presents a speed estimation method using neural networks (NN) in a vector controlled (VC) induction motor drive. The estimation algorithm is implemented using a Jordan recurrent NN structure where training of the NN is done online using back-propagation algorithm. Two back emf models are used in order to realize the reference and the adaptive models from which depending upon the spee...