-

Energize Electrical current signature analysis for fault detection in large...
- Advertisment -

Electrical current signature analysis for fault detection in large motors

- Advertisment -

Large electric motors form the core of many industries. As machines are designed to tighter tolerances, there is a growing need, for the sake of reliability, to monitor their behaviour and performance. Electrical signature analysis is proving valuable on wide range of motors to detect both mechanical and electrical faults.

Vibration analysis (VA) as means of detecting failure of mechanical parts of electrical machines is a well-established technique. VA can be extended to detect certain electrical faults as well, but for accurate electrical condition detection, electrical testing is required. Accelerometers applied to mechanical components of the drive train are traditionally used for condition monitoring but require their own data acquisition system and analysis software.

Fig. 1a: Current signature for a healthy motor [6].
In contrast, the electrical current and voltage are continuously available and can be used for condition monitoring. Electric signature analysis makes use of the abnormal variations in input current to detect faults and failures.

References

[1] N Mehala: Motor Current Signature Analysis and its Applications in Induction Motor Fault Diagnosis”, International journal of systems applications, engineering and development , 2007.
[2] A Thakur: Motor Current Signature Analysis as a Tool for Induction Machine Fault Diagnosis”, International Journal of Computer Science and Information Technology Research, Vol. 3, July – September 2015, www.researchpublish.com
[3] D Milkovic: Brief review of motor current signature analysis”, Hrvatska elektroprivreda (www.hep.hr).
[4] G Kliman: “What Stator Current Processing Based Technique to Use for Induction Motor Rotor Faults Diagnosis”, IEEE Transactions on Energy Conversion, 2003.
[5] N Burstein: “Electric Signature Analysis”, EDN, July 2009.
[6]  A Somaya, et al: “Detection of Induction Motors Rotor/Stator Faults Using Electrical Signatures Analysis”, International conference on renewable energies and power quality (ICREPQ), 2013.
[7] P Rodriguez :“Field current signature analysis for fault detection in synchronous motors”, Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives.
[8] J Lee: “Winding fault diagnosis of a 3-phase induction motor powered by frequency inverter drive using the current and voltage signals”, Mechatronics, 2014.

Send your comments to energize@ee.co.za (more)

Download the Pdf

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest Articles

Local branch opened in Limpopo

Hytec South Africa, a member of the Bosch Rexroth South Africa Group, officially opened its new branch in Lephalale, Limpopo in January 2020. The...

LED lighting controlled by a solar inverter

IMEON Energy announces the release of the LED Smart Lighting application (app) which enables its inverters to interact with smart LED lights from the...

EU plans the energy system of the future

Information from the European Commission  -   To become climate-neutral by 2050, Europe needs to transform its energy system, which accounts for 75% of the EU's...

Industry association appoints new board

The South African Photovoltaic Industry Association (SAPVIA) appointed a new board at its recent Annual General Meeting (AGM). SAPVIA is an industry body which...

Popular fuel brand launches contactless fuel-payment app

Engen has announced the arrival of the new Engen 1app, which offers motorists a safe and conveniently contactless way to pay for fuel at its...

Covid-19 calls for “balanced” strategy for technical audits

Engineering projects face a growing range of audits, assessment and monitoring, but will Covid-19 restrictions on movement make it difficult for consultants to carry...

Alternator for cogeneration applications

Nidec Leroy-Somer announces the launch of the LSAH 44.3, an alternator designed for cogeneration applications in district heating. This new alternator incorporates an optimised...

Rapeseed natural ester fluid for EHV transformer

TransnetBW, a German electricity transmission operator, recently ordered a power transformer from Siemens. The specification called for the transformer to be filled with natural...

Natural gas to experience largest demand shock on record

Information from the International Energy Agency  -   Natural gas is expected to experience its largest demand shock on record in 2020 as the Covid-19 pandemic...

Coal for primary energy on the wane

Quoting the Yomiuri daily newspaper, Reuters reports that Japan is planning to suspend or close as many as 100 ageing and inefficient coal-fired power...

Hitachi ABB Power Grids commences operations

Complementary portfolios and technology strengths to ensure continuity, enhance customer value and bring growth opportunities. In accordance with the agreement signed on 17 December...

Energy efficiency: Still the low-hanging fruit

by Fereidoon P. Sioshansi, Ph.D, Menlo Energy -  Efficient use of energy is the key to a low carbon future. “In the battle against climate...

Wind and hydrogen offer potential to drive exports market

Information from the South African Wind Energy Association (SAWEA) The opportunity for South Africa to couple its renewable energy economic stimulus to non-electricity prospects, presents...

Carbon tax regulations regarding allowances and premiums

by Paula-Ann Novotny and Gillian Niven, Webber Wentzel On 19 June 2020, Tito Mboweni, the minister of finance, finalised the next set of regulatory mechanisms...

Battery packs for mobility and back-up power

In addition to supplying lithium iron phosphate (LiFePO4) battery packs for forklifts in materials-handling applications, Chase Technologies is also ramping up supply to ancillary...
- Advertisement -