Detection of eccentricity and bearings fault using stray flux monitoring

Vitek, Ondrej; Janda, M.; Hajek, V.; Bauer, Pavol

doi:10.1109/demped.2011.6063663

Cited by 62 publications

(28 citation statements)

References 18 publications

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“…This is because stray flux is induced by stator and rotor currents, but the effect of stator currents prevails, since the stator acts as a magnetic shield with respect to the rotor. So, stray flux analysis is expected to convey the same information that can be obtained by conventional stator current analysis [18].…”

Section: Ieee Transactions On Industrial Electronicsmentioning

confidence: 99%

“…The core is wound with 300 turns of enameled copper of 0.112 mm in diameter [42]. The main advantages of this cheap (of only about a few Euros) flux probe over the industrial ones is its small size, which enables the measurement of the stray flux anywhere around the machine, as it was also emphasized in [18]. It should be mentioned, that for both types of sensors the attenuation of the output voltage is insignificant and their frequency range permits their usage in common ac motor monitoring and diagnosis [15].…”

Section: ) the Flux Sensorsmentioning

confidence: 99%

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Induction Machine Bearing Fault Detection by Means of Statistical Processing of the Stray Flux Measurement

Frosini

Harlişca

Szabó

2015

IEEE Trans. Ind. Electron.

235

124

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Rolling bearing faults are generally slowly progressive; therefore the development of an effective diagnostic technique could be worth to detect such faults in their incipient phase and to prevent complete failure of the motor. The methods proposed in the literature for this purpose are mainly based on measuring and analyzing the vibration and current. Here, a novel technique based on the stray flux measurement in different positions around the electrical machine is proposed. The main advantages of this method are due to the simplicity and the flexibility of the custom flux probe with its amplification and filtering stage. The flux probe can be easily positioned on the machines and adapted to a wide range of power levels. The paper also reports an extensive survey on the stray flux based fault detection methods for induction motors, prior to introducing a novel sensor/diagnostic scheme.

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Section: Ieee Transactions On Industrial Electronicsmentioning

confidence: 99%

Section: ) the Flux Sensorsmentioning

confidence: 99%

Induction Machine Bearing Fault Detection by Means of Statistical Processing of the Stray Flux Measurement

Frosini

Harlişca

Szabó

2015

IEEE Trans. Ind. Electron.

235

124

View full text Add to dashboard Cite

show abstract

“…Although magnetic flux monitoring could be considered as a type of electrical monitoring and has been offered in [36][37][38], due to costly and difficult installation of sensors, it has been less respected. On contrary, stator current is easily available and no additional hardware is required.…”

Section: A Open-loop Controlmentioning

confidence: 99%

Review of eccentricity fault detection techniques in IMs focusing on DFIG

Faiz

Moosavi

2015

2015 IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives (POWERENG)

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Induction machines are widely used in different applications. Unpredicted breakdown of these machines usually leads to costly downtime and repairs. These expenses can be minimized by using proper condition monitoring techniques. Eccentricity fault is one of the widespread faults causing machine malfunction; its detection could be useful for preventing of harmful consequences. In this paper, different works on eccentricity fault diagnosis of induction machines with different types of supply have been reviewed. Due to extensive use of induction machines in wind turbines (WT) as doubly-fed induction generator (DFIG), in addition to declaration of importance of eccentricity fault diagnosis in DFIG, detection of eccentricity fault in DFIG is also reviewed.

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“…UMP wears down the bearings which can lead to SE increase and more additional stress on bearings. This can be prevented by early detection of eccentricity or bearings fault as presented in many studies [3][4][5][6][7][8]. However, only few papers [9] deal with direct impact of radial forces on bearings.…”

Section: Introductionmentioning

confidence: 98%

Analysis of rotor's eccentricity influence on bearing load of induction machine

Sobra

Byrtus

Kindl

et al. 2014

Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014

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To ensure reliable drive with an induction machine requires deep insight in electro-mechanical dynamics during its operation. The flexible multibody modeling technique enables the simulation of dynamic loads on all drive components. This paper focuses on complex modeling of machine's behavior in case of eccentrically placed rotor. The life time of machine's bearing becomes very important issue of machine's maintenance and reliability and is markedly influenced by any unbalanced forces acting on the rotor. The rotor eccentricity is one of the most significant aspects making machine's bearing loaded by strong unbalanced magnetic pull. Only the complex flexible model of the rotor considering all unbalanced rotor forces can provide us the very detailed information about the bearing load. The methodology of determination of such loading is applied to the 11 kW squirrel-cage induction machine.

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Detection of eccentricity and bearings fault using stray flux monitoring

Cited by 62 publications

References 18 publications

Induction Machine Bearing Fault Detection by Means of Statistical Processing of the Stray Flux Measurement

Induction Machine Bearing Fault Detection by Means of Statistical Processing of the Stray Flux Measurement

Review of eccentricity fault detection techniques in IMs focusing on DFIG

Analysis of rotor's eccentricity influence on bearing load of induction machine

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