System electrical parameters and their effects on bearing currents

Busse, D.; Erdman, J.; Kerkman, R.J.; Schlegel, D.; Skibinski, G.L.

doi:10.1109/apec.1996.500498

Cited by 48 publications

(38 citation statements)

References 7 publications

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“…The first models for IIBCs were presented in the mid and late 1990s, describing already both currents that are related to v CM only and those caused by i CM (Chen, Lipo, Fitzgerald, 1996;Erdman, Kerkman, Schlegel, 1996;Busse et al, 1997a;Busse et al, 1997b;Busse et al, 1997c;Ollila et al, 1997a;Ollila et al, 1997b;Muetze, Binder, 2006;Binder, Aust, Schrepfer, 1999;Link, 1999), where (Binder, Aust, Schrepfer, 1999) and (Link, 1999) give a nice summary of this work. Except for (Ollila et al, 1997a;Ollila et al, 1997b;Muetze, Binder, 2006a;Binder, Aust, Schrepfer, 1999), the measurement results were carried out on smaller machines of a few kilowatt rated power, as well as using different measurement techniques.…”

Section: Bearing Currentsmentioning

confidence: 97%

“…Review: cause-and-effect chains and classification of inverter-induced bearing currents In the mid 1990s, a significant set of papers reporting on the HF bearing current phenomena and discussing the underlying mechanisms were presented by mainly three groups of authors e.g. (Chen, Lipo, Fitzgerald, 1996;Erdman, Kerkman, Schlegel, 1996;Busse et al, 1997a;Busse et al, 1997b;Busse et al, 1997c;Ollila et al, 1997a;Ollila et al, 1997b). Building on these findings, several other authors have addressed the topic in subsequent years, further describing the cause-and-effect chains of these currents and possible mitigation techniques.…”

Section: Motivationmentioning

confidence: 99%

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Thousands of hits: on inverter-induced bearing currents, related work, and the literature

Mütze

2011

Elektrotech. Inftech.

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A. Mü tze OVE Today, a search for bearing currents in databases on engineering literature may return hundreds or (depending on the database and any additional filter used) thousands of hits. The degree to which the identified papers address the bearing current topic itself varies. Often, the term is used (as it is common with key words) to reflect the wider context and the topicality of the work that is presented, e.g. a discussion of a new filter topology. Without claiming completeness, this paper provides an overview of the various aspects that have been addressed in literature related to the bearing current topic.Tausende von Treffern: Ü ber umrichterbedingte Lagerströ me, zugehö rige Themen und die Literatur.Eine einfache Suche unter dem Stichwort "Lagerströ me in einer Datenbank fü r Ingenieursliteratur kann zu hunderten oder (abhä ngig von der Datenbank und zusä tzlich verwendeten Filtern) tausenden von Treffern fü hren. Das Ausmaß, mit dem die identifizierten Publikationen das Lagerstromthema behandeln, variiert. Oft wird der Begriff (wie es fü r Stichwö rter ü blich ist) verwendet, um den weiteren Zusammenhang und die Aktualitä t des in der jeweiligen Publikation behandelten Themas, wie z. B. eine neue Filtertopologie, widerzuspiegeln. Dieser Beitrag gibt einen Ü berblick ü ber die verschiedenen mit dem Lagerstromthema in Verbindung stehenden Aspekte, die in der Literatur behandelt werde.

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Section: Bearing Currentsmentioning

confidence: 97%

Section: Motivationmentioning

confidence: 99%

Thousands of hits: on inverter-induced bearing currents, related work, and the literature

Mütze

2011

Elektrotech. Inftech.

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“…Hence, the value of the cut-off angular frequency 0) is given by oc izo) n 2(1+ 21) (5) To satisfy, ltering requirements, the lowest cut-off angular frequency ( =1) is determined by = 2.45o0n = 2.45 /LC (6) For the DM filter, the value of C is usually selected in the rang of 20-6OuF in order to achieve a higher output voltage.…”

Section: Design Of the Passive Filtermentioning

confidence: 99%

“…Meanwhile, the side-effects accompanied with this kind of improvement had become more and more serious. For example, high frequency common-mode (CM) voltage existed in the PWM inverter output have been found could induce shaft voltage , bearing current [1], [2], [5] and high frequency CM leakage current [3], [4]. The CM leakage current has also made contributions to the conducted EMI issues.…”

Section: Introductionmentioning

confidence: 97%

A New Approach to Mitigate CM and DM Voltage dv/dt Value in PWM Inverter Drive Motor Systems

Gao

2007

APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition

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In this paper, a novel passive filter installed at PWM inverter output terminals was proposed with an objective of reducing the high common-mode(CM) and differentialmode(DM) voltage dv/dt value generated by PWM inverter simultaneously. For determining the parameters of the passive filter, the filter transfer function was utilized to achieve a desirable filtering performance. The detailed design procedure of the filter parameters was given. The validity and effectiveness of the proposed filter were supported by the simulation and experimental results carried out on 380V/3kW induction motor system. Further investigations also demonstrate that by making the line-to-line output voltage of inverter sinusoidal, the proposed filter permits motor to be connected with inverter through a long cable. By lowing the dv/dt value of CM and DM voltage, the sideeffects induced by them such as shaft voltage, bearing current CM leakage current and over-voltage at motor terminals could be mitigated effectively.Index Terms -passive filter, over-voltage, common-mode voltage, differential-mode voltage, PWM inverter.

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“…The machinery elements in modern, variable-speed drive systems, especially the bearings, can suffer from additional stress due to parasitic currents generated through different cause and effect chains in the system (Chen et al, 1996;Busse et al, 1997;Muetze, 2004). This stress is fundamentally different compared to mechanical loading and still lacking a thorough understanding (Muetze et al, 2006;Zika et al, 2009 Bearing steel itself is a multiphase material with varying magnetic properties in the different regions of the microstructure.…”

Section: Introductionmentioning

confidence: 98%

Studies of the contribution of alternating electromagnetic ﬁelds toward material fatigue in 100Cr6

Holweger

Wolf²,

Walther³

et al. 2012

Industrial Lubrication and Tribology

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Purpose -The purpose of this paper is to show how controlled exposure of electromagnetic fields toward bearing steel vulnerates the microstructure. The ability of Barkhausen Noise signal processing is used for detecting phenomena such as dislocation and subgrain formation processes as the beginning of later failures. Design/methodology/approach -A Barkhausen noise signal measurement equipment is used for detecting subsurface distress of 100Cr6 as a function of the applied electromagnetic and mechanical stress. Barkhausen noise signal is mathematically processed by use of fractal dimension analysis. Findings -The paper cleary reveals significant impact of electromagnetic field in junction with mechanical loading. Electromagnetic impact depends on the magnitude of the field. Research limitations/implications -Research limitations are given by the fact that in real field applications, e.g. wind power plants, bearings are exposed by multiple influences and the methodology is not applicable to those conditions. Practical implications -The methodology can be applied to real field applications in condition monitoring systems. Up to now, no reasonable on-line measurement is in use determining sub surface fatigue phenomena. The paper hence, reveals the possibility to raise condition monitoring into a new perspective. Originality/value -The use of Barkhausen noise signal processing, as presented here, is original with respect to real field applications, such as wind power plants with a high demand in condition monitoring, especially off-shore plants.

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System electrical parameters and their effects on bearing currents

Cited by 48 publications

References 7 publications

Thousands of hits: on inverter-induced bearing currents, related work, and the literature

Thousands of hits: on inverter-induced bearing currents, related work, and the literature

A New Approach to Mitigate CM and DM Voltage dv/dt Value in PWM Inverter Drive Motor Systems

Studies of the contribution of alternating electromagnetic ﬁelds toward material fatigue in 100Cr6

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