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Investigation of electromagnetic compatibility (EMC) of low-voltage (<60V) DC electric motors in construction machinery application
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The brushed DC motor is a source of electromagnetic emission that may cause interference. The main issues with brushed DC motor are arcing, which occurs between the brushes and commutator, and inrush current.

It is possible to decrease the electromagnetic emissions by addressing the source (brushed dc motor) and the installation. The source may be addressed by using filters in the form of X2Y-capacitors on the terminals or ferrites on the cables. The installation does not produce any emission, but it is possible to lower its contribution. This is done by altering the installation like changing the placement of cables and provide good coupling. An effective way of decreasing inrush currents is by using negative-thermal-coefficient (NTC) thermistors.

Another measure to improve the EMC properties of the brushed DC motor is to design the motor so that it can trap EM emissions. Some of these parameters are motor house material, end-cap material, vent holes or slots on motor housing, placement of power terminals, crimping tabs and motor enclosure.

Place, publisher, year, edition, pages
2019. , p. 53
Keywords [en]
EMC, brushed dc motor, arcing, inrush currents, X2Y capacitor, NTC thermistor, common mode ferrites, differential mode ferrites, grounding, cable placement, motor design parameters
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-162160ISRN: LiU-ITN-TEK-A--19/023--SEOAI: oai:DiVA.org:liu-162160DiVA, id: diva2:1371829
Subject / course
Electrical Engineering
Uppsok
Technology
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Examiners
Available from: 2019-11-21 Created: 2019-11-21 Last updated: 2019-11-21Bibliographically approved

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CiteExportLink to record
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  • apa
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