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Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

Machines, 2023
The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes.
Kotb B. Tawfiq, Mehmet Güleç, Peter Sergeant   +2 more
doaj   +3 more sources

Review on Tribological and Vibration Aspects in Mechanical Bearings of Electric Vehicles: Effect of Bearing Current, Shaft Voltage, and Electric Discharge Material Spalling Current

Lubricants
Electric motors play a decisive role in electric vehicles by converting electrical energy into mechanical motion across various drivetrain components.
Rohan Lokhande, Sitesh Kumar Mishra, Deepak Ronanki, Piyush Shakya, Vimal Edachery, Lijesh Koottaparambil   +5 more
doaj   +2 more sources

An Autoregressive-Based Motor Current Signature Analysis Approach for Fault Diagnosis of Electric Motor-Driven Mechanisms [PDF]

Sensors
Maintenance strategies such as condition-based maintenance and predictive maintenance of machines have gained importance in industrial automation firms as key concepts in Industry 4.0. As a result, online condition monitoring of electromechanical systems
Roberto Diversi, Alice Lenzi, Nicolò Speciale, Matteo Barbieri   +3 more
doaj   +2 more sources

Simulation of the Circulating Bearing Currents for Different Stator Designs of Electric Traction Machines

Machines, 2023
Pulse–width modulated inverters are commonly used to control electrical drives, generating a common mode voltage and current with high–frequency components that excite the parasitic capacitances within electric machines, such as permanent magnet ...
Yusa Tombul, Philipp Tillmann, Jakob Andert   +2 more
doaj   +1 more source

Experimental Assessment of High Frequency Bearing Currents in an Induction Motor Driven by a SiC Inverter

IEEE Access, 2021
Compared with silicon (Si) IGBTs, silicon carbide (SiC) MOSFETs have much faster switching speeds and high switching frequency operation capability, enabling compact and high-efficiency motor drive systems.
Yipu Xu, Yan Liang, Xibo Yuan, Xiaojie Wu, Yan Li   +4 more
doaj   +1 more source

Novel Characterization of Si- and SiC-Based PWM Inverter Bearing Currents Using Probability Density Functions

Energies, 2022
The high frequency PWM voltage pulses from a two-level six-switch inverter produce a common-mode voltage in an electric machine’s windings, a fraction of which appears on the machine shaft due to electrostatic (capacitive) coupling.
Ryan Collin, Alex Yokochi, Annette von Jouanne   +2 more
doaj   +1 more source

The Influence of Load and Speed on the Initial Breakdown of Rolling Bearings Exposed to Electrical Currents

Lubricants, 2023
The reason for the failure of electric vehicle drives is increasingly current-induced damage to rolling bearings. Studies show that rolling bearings are more susceptible to current pass-through after the first occurrence of unwanted bearing currents.
Steffen Puchtler, Robert Maier, Martin Kuhn, Yves Burkhardt   +3 more
doaj   +1 more source

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

Lubricants, 2022
Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage ...
Volker Schneider, Cara Behrendt, Pauline Höltje, Daniel Cornel, Florian Michael Becker-Dombrowsky, Steffen Puchtler, Francisco Gutiérrez Guzmán, Bernd Ponick, Georg Jacobs, Eckhard Kirchner   +9 more
doaj   +1 more source

Influencing Factors on the Fluting in an Axial Ball Bearing at DC Bearing Currents

Lubricants, 2023
The effect of variable DC bearing current amplitude, bearing current polarity, mechanical force, rotation speed, bearing temperature, and number of the balls on the fluting in an axial ball bearing type 51208 is investigated under DC currents.
Omid Safdarzadeh, Resat Capan, Michel Werner, Andreas Binder, Oliver Koch   +4 more
doaj   +1 more source

A Common-Mode Shorting Network to Reduce Common-Mode Excitation of Three-Phase Two-Level Electric Drives

IEEE Open Access Journal of Power and Energy, 2023
Common-mode voltage and current in an electric machine are undesirable. Although the strategic placement of a common-mode inductor and dc input side capacitors may reduce the common-mode current produced by an electric drive system, the effectiveness of ...
Harshita Singh, Scott D. Sudhoff
doaj   +1 more source