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Energy Conversion and Management
Article . 2014 . Peer-reviewed
License: Elsevier TDM
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Switched reluctance machines control with a minimized sampling frequency

Authors: Rain, Xavier; Hilairet, Mickaël; Arias Pujol, Antoni;

Switched reluctance machines control with a minimized sampling frequency

Abstract

This paper is focused on reducing the Switched Reluctance Machines (SRMs) control sampling frequency in order to save processor real time resources, while keeping the stability and also the performance, in terms of average torque and torque ripple. Reducing the CPU cost either by implementing the control algorithm in a less performing CPU or more importantly reducing the percentage of the CPU demand is an attractive goal, especially for the electrical vehicle industry from where the SRM used in this research has been designed for. Once low sampling periods are applied in the current loop, a strong degradation in the averaged torque and torque ripple arises. Such problem degenerates with the speed, becoming unbearable at high speeds and eventually making the control unstable. In this paper two solutions are proposed. The first one, which is just software feasible, consists on anticipating the voltage supply in order to tackle the noncoincident calculated turn on and off angles and the actual sampling instants. The second solution, which must be implemented at a very low hardware level, uses a basic function to allow the process to emulate continuous control and therefore independent of the sampling instants. Finally, experimental results on a 8/6 SRM illustrate the validity of the novel strategies in terms of average torque performance and torque ripple minimization. (C) 2014 Elsevier Ltd. All rights reserved. Peer Reviewed

Countries
Spain, Spain, Spain, France, Spain
Keywords

Optimization, SRM, design, Real-time data processing, Computational economy, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Torque ripple, Switched reluctance machine, [PHYS.MECA.MEFL] Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Sampling, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph], [PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], Electric power--Conservation, [SPI.NRJ]Engineering Sciences [physics]/Electric power, electric vehicle, Mostreig, Sampling frequency, motor, 620, 004, 629, Sensorless speed control, Algorithm, [SPI.AUTO] Engineering Sciences [physics]/Automatic, Energia elèctrica--Estalvi, [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], torque ripple reduction, rotor, Temps real (Informàtica), Simulation, [SPI.NRJ] Engineering Sciences [physics]/Electric power

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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