Conception of a wireless cell for the energy consumption diagnosis of AC rotating machines

Zidat, Farid; Lecointe, J.-P.; Morganti, Fabrice; Brudny, J.F.; Jacq, Thierry; Streiff, Frédéric

doi:10.1109/isie.2010.5637985

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…For the torque estimation, the idea consists in using the external flux variation. A previous study [ 20 ] shows that an empirical determination is possible by measuring the stator current variations. However, this method implies to use a current sensor.…”

Section: Application To a Cell For The Efficiency Diagnosis Of Inductmentioning

confidence: 99%

Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines

Zidat

Lecointe

Morganti

et al. 2010

Sensors

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This paper presents a non invasive method for estimating the energy efficiency of induction motors used in industrial applications. This method is innovative because it is only based on the measurement of the external field emitted by the motor. The paper describes the sensors used, how they should be placed around the machine in order to decouple the external field components generated by both the air gap flux and the winding end-windings. The study emphasizes the influence of the eddy currents flowing in the yoke frame on the sensor position. A method to estimate the torque from the external field use is proposed. The measurements are transmitted by a wireless module (Zig-Bee) and they are centralized and stored on a PC computer.

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Section: Application To a Cell For The Efficiency Diagnosis Of Inductmentioning

confidence: 99%

Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines

Zidat

Lecointe

Morganti

et al. 2010

Sensors

Self Cite

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show abstract

“…By contrast, grid-powered motors do not integrate such devices, and their monitoring remains problematic. Indeed, the application is generally to be stopped so that the machine can be equipped of specific sensors (Zidat et al , 2010a). In this case, the health monitoring can be carried out with different procedures such as analysis of current harmonics and vibrations (Henao et al , 2014; Immovilli et al , 2013; Blodt et al , 2008).…”

Section: Introductionmentioning

confidence: 99%

Impact of supply voltage variations on external magnetic field emitted by induction machines

Younsi

Ninet

Morganti

et al. 2017

COMPEL

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Purpose This paper aims to study the influence of supply voltage variations on the external magnetic field emitted by grid-powered induction machines (IMs). Design/methodology/approach Two models are developed in the paper to analyse, for different supply voltage values, the influence of the variations of the magnetizing voltage for which there is a link with the tangential component of the external flux. The first is an analytical model based on the IM single-phase-equivalent circuit with variable magnetizing reactance to take into account the saturation of the magnetic circuit. The second is a numerical finite element simulation to model the same phenomenon. Results of both models are analysed with experimental measures of the external flux. Findings The study shows that the amplitude of the external field strongly depends on supply voltage values. Research limitations/implications The investigation is mainly focused on the tangential component of the external magnetic field which is of high importance concerning the applicability of non-invasive methods of diagnosis, as electromagnetic torque estimation developed by the authors or internal fault determination. Originality/value The originality of the paper concerns the characterization of the external flux with the supply voltage for IMs. It is shown that the magnetic circuit radiates external flux differently with the load and with the supply voltage.

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“…However, the motors directly connected to the grid cannot benefit of such tools and their monitoring is still problematic. Indeed, the application has generally to be stopped so that the machine can be equipped of specific sensors [1]. Then, the health monitoring can be made with different procedures, such as the measurement and the analysis of the current harmonics [2 -4], but it needs to have an access to the cable.…”

Section: Introductionmentioning

confidence: 99%

Effects of external yoke and clamping-plates on AC motor external field

Lecointe¹,

Morganti²,

Zidat³

et al. 2012

IET Sci. Meas. Technol.

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This study focuses on the external flux in the vicinity of AC electrical rotating machines. The influence of the external housing, constituted of the external yoke and the clamping-plates, is studied with a finite-element modelling, an analytical model and experimental measurements. Two induction machines are analysed; the first is equipped of an external yoke made of cast iron, whereas the second is made of aluminium. Those machines have been instrumented with magnetic flux sensors placed each side of the flanges and each side of the external yoke border. The conclusions of this study have a double interest. On the one hand, they can be used to understand what the influence of the external housing in the flux transmission is. That allows using the external magnetic flux as information to diagnose the rotating machines. On the other hand, the study can help machine designers to define motors with a discreet magnetic signature.

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Conception of a wireless cell for the energy consumption diagnosis of AC rotating machines

Cited by 5 publications

References 6 publications

Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines

Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines

Impact of supply voltage variations on external magnetic field emitted by induction machines

Effects of external yoke and clamping-plates on AC motor external field

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