Results 231 to 240 of about 1,644,975 (282)
Evaluation of Bearing Voltage Reduction in Electric Machines by Using Insulated Shaft and Bearings [PDF]
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020 Bearing voltages and corresponding currents in electric machines driven by pulse width modulation (PWM) converters with fast switching and high dv/dt can cause premature bearing failures. This paper evaluates the bearing voltage reduction by using insulated shafts and bearings.
Peng Han, Greg Heins, Mark Thiele
exaly +4 more sources
Modeling of Bearing Voltage in Electric Machines Based on Electromagnetic FEA and Measured Bearing Capacitance [PDF]
IEEE Transactions on Industry Applications, 2021 Bearing voltages and associated bearing currents in electric machines driven by pulsewidth modulation converters with high switching frequencies and high $dv/dt$ can cause premature bearing failures. This article proposes a new modeling approach for the prediction of steady-state and transient bearing voltages based on two-dimensional (2-D ...
Peng Han, Greg Heins, Mark Thiele
exaly +3 more sources
Frequency-Dependent Bearing Voltage Model for Squirrel-Cage Induction Motors
IEEE Transactions on Industrial Electronics, 2022 This work describes a frequency-dependent bearing voltage model for squirrel-cage induction motors. Previous researches related to bearing voltages commonly considered the bearing voltage ratio (BVR) as a constant. However, it is important to analyze the frequency-dependent behavior of BVR when dealing with systems excited by high switching frequency ...
Manje Yea, Jingook Kim, Ki Jin Han
exaly +5 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Breakdown Voltages in Thrust Bearings: Behavior and Measurement
Tribology Transactions, 2023Stefan Goetz, Bernd Sauer, Simon Graf
exaly +2 more sources
Study on Effect of Neutral Voltages on Shaft Voltages Causing Bearing Currents
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013This paper investigates that effect of neutral voltage on shaft voltages. The shaft voltages are expected to provide cause of bearing currents. The bearing currents damage bearing in motor. We expect neutral voltages to cause shaft voltages. Thus, we construct circuit of interior motor.
Hiroshi Mizoguchi +2 more
exaly +2 more sources
An overview of shaft voltages and bearing currents in rotating machines
2016 IEEE Industry Applications Society Annual Meeting, 2016Shaft voltages and associated "shaft currents" or "bearing currents" have been known since more than a century on DC and AC motors under classical line operation. More recently with the emergence of inverter drives, there has been an increase of high-frequencies bearing currents and shaft voltages creating mainly premature failure of bearings. Although
Thibaud Plazenet +3 more
openaire +3 more sources
Characteristics of Shaft Voltage and Bearing Currents
IEEE Industry Applications Magazine, 1997This article reviews investigations into reduced bearing life due to voltage source adjustable speed drive (ASD) AC motor operation. Relevant bearing failure mechanisms and indicators are discussed. dv/dt and electric discharge machining (EDM) contributions are discussed and experimental data presented showing the voltage levels on motor shafts when ...
Dave Busse +4 more
openaire +1 more source
Measuring of electrical currents, voltage and resistance of an axial bearing
2021 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2021 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2021Bearing currents induced in electrical motors driven with fast switching power electronic inverters lead to bearing surface damages on the raceway. This may be the case especially when the rotor is electrically connected to the earth potential of the system e.g. via the cogging wheels of a coupled gear.
Omid Safdarzadeh +2 more
openaire +1 more source
Feedback linearization of an active magnetic bearing with voltage control
IEEE Transactions on Control Systems Technology, 2002A feedback linearization controller is presented for a single-degree-of-freedom (DOF) magnetic bearing test rig. The feedback linearization controller is derived from a detailed nonlinear electromagnet model using both analytic relationships and experimental calibration data.
Jeffrey D. Lindlau, Carl R. Knospe
openaire +2 more sources