Results 11 to 20 of about 179,335 (194)
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2016 The paper presents an analyses of shaft voltage and bearing current phenomena in electrical machines. An overview of the causes of these voltages and currents and their possible consequences is also given. The influence of the thyristor excitation system
Klasnić Ilija +2 more
doaj +2 more sources
Research of the Electric Drive with Intermittent Motion Law [PDF]
Омский научный вестник, 2020 An electric drive with an intermittent law of the shaft motion of the executive motor, which is widely used in various fields of industry, is considered.
N. A. Voronina +3 more
doaj +1 more source
Rotor Misalignment Detection using a Wireless Sensor and a Shaft Encoder [PDF]
, 2010 Mechanical systems such as motors, pumps, engines, and turbine are all operating based on different shafts. Due to unexpected operating conditions, various faults such as cross-sectional cracks, looseness and misalignment may occur during their service ...
Gu, Fengshou, Ball, Andrew, Arebi, Lufti
core +4 more sources
PENGARUH JARAK MISALIGNMENT DRIVE SHAFT COOLING TOWER TERHADAP TEGANGAN NORMAL DAN TEGANGAN GESER
Rekayasa Mesin, 2022 The purpose of this study was to determine the effect of misalignment distance of Cooling Tower drive shaft on normal stress and shear stress. Tensions that occur on the shaft continuously for a long time cause the shaft to experience fatigue.
Rachmat Subagyo +4 more
doaj +1 more source
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 +2 more
doaj +1 more source
Investigation of a Rotating Shaft with a Novel Integrated Wireless Accelerometer [PDF]
, 2010 Rotating shafts are the most critical components of rotating machines such as motors, pumps, engines and turbines. Due to their heavy workloads, defects are more likely to develop during operation.
Gu, Fengshou +3 more
core +4 more sources
Energies, 2023 This paper proposed a simplified modeling approach for a power quality (PQ) assessment of Electric Submersible Pumps (ESP) systems supplied by the two-level, the neutral-point-clamped three-level, and the cascaded H-bridge (CHB) multilevel inverter VFD ...
Pascal M. Lingom +4 more
doaj +1 more source
Energies, 2020 Adjustable speed drives use Pulse Width Modulation (PWM) to switch DC-bus voltage for the synthesis of three-phase voltages to provide power to the permanent magnet synchronous motor (PMSM).
Muhammad Aqil, Jun-Hyuk Im, Jin Hur
doaj +1 more source
IEEE Access, 2021 Nonideal switching characteristics of voltage source inverter (VSI) will result in distortions in both phase currents and reference voltages of a permanent magnet synchronous machine (PMSM) drive system, which will also consequently introduce ripples ...
Shichao Zhou +7 more
doaj +1 more source
Modeling and reduction of shaft voltages in AC motors fed by frequency converters [PDF]
, 2006 This thesis deals with the modeling and mitigation of shaft voltages and bearing currents in frequency converter-fed AC motors. Common-mode voltages produced by modern frequency converters can cause destructive currents in motor bearings.
Mäki-Ontto, Petri
core +1 more source