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2 results on '"sensor count reduction"'

1. Low Cost Direct Torque Control Algorithm for Induction Motor without AC Phase's Currents Sensors

Author

Seddik Bacha, Nabil Taib, Brahim Metidji, Toufik Rekioua, Lotfi Baghli, Groupe de Recherche en Electrotechnique et Electronique de Nancy (GREEN), Université de Lorraine (UL), Université Abderrahmane Mira [Béjaïa], Département d'électrotechnique, Laboratoire de Génie Electrique de Grenoble (G2ELab), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Universal motor, Engineering, Stator, 020209 energy, 02 engineering and technology, 7. Clean energy, law.invention, sensor count reduction, law, Control theory, 0202 electrical engineering, electronic engineering, information engineering, Torque, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Machine control, Vector control, Direct torque control (DTC), single current sensor, business.industry, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Direct torque control, induction motor (IM), Inverter, business, Algorithm, Induction motor
Abstract

This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-phase induction motor (IM) under direct torque control (DTC) using the information obtained from only one shunt resistor (in series with low-side switches in a conventional three-phase inverter). The aim is to develop a low-cost high-performance IM drive. The proposed algorithm is robust and very simple. It uses the dc current to reconstruct the stator currents needed to estimate the motor flux and the electromagnetic torque. A theoretical concept is developed, the modified look-up table is presented, and current-access tables are designed and used in the phase-current reconstruction. The limitations are also studied and presented. IEEE Transactions on Power Electronics,Sept. 2012, Volume: 27, Issue: 9, pp. 4132 - 4139, disponible en ligne doi:10.1109/TPEL.2012.2190101.

Published
2012

2. Direct torque control of an induction motor using a single current sensor

Author

Roberto Menis, Manuele Bertoluzzo, Giuseppe Buja, Bertoluzzo, M, Buja, G, and Menis, Roberto

Subjects
Vector control, Stator, Computer science, Direct torque control (DTC), Flux, Control engineering, law.invention, Direct torque control, Control and Systems Engineering, law, Control theory, sensor count reduction, induction motor (IM), Torque, Inverter, Current sensor, Electrical and Electronic Engineering, Induction motor, Machine control, Voltage
Abstract

A novel scheme for the direct torque control (DTC) of an induction motor (IM) is proposed, which uses a single sensor of current inserted in the inverter dc link. The rationale behind the proposal is to develop a low-cost but high performance IM drive. The scheme exploits a simple and robust algorithm to reconstruct the stator currents needed to estimate the motor flux and torque. The algorithm operates in two stages: first, it predicts the stator currents from a model of the motor and then adjusts the prediction on the basis of the sensed dc-link current. Experimental results are given to demonstrate the ability of the scheme in reproducing the performance of a traditional DTC IM drive.

Published
2006

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