Results 11 to 20 of about 78,110 (303)
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 +2 more
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Modified Slot Opening for Reducing Shaft-to-Frame Voltage of AC Motors
Energies, 2020 This paper presents a method to reduce the winding-to-rotor capacitance of electrical machines for the purpose of suppressing shaft-to-frame voltage, which causes reliability issues, such as electromagnetic interference (EMI) and bearing current.
Manje Yea, Ki Jin Han
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Reduction of Shaft Voltage of IPMSM According to the Shape of the Novel Shield Ring
IEEE AccessRecently, the motor drive system of electric vehicles (EVs) has been increased to high voltage to enhance the output and efficiency of the motor. However, higher voltage exacerbates common-mode voltage (CMV), which is the main cause of bearing faults ...
Jun-Kyu Kang +3 more
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Challenges of Large Converter-Fed Synchronous Machines for Variable-Speed Pumped Hydro Storage
Energies, 2023 The green energy transition of electrical energy production is leading to an increasing share of total energy production for volatile renewable energy sources, mainly wind and solar power. To handle this volatile production, flexible and efficient energy
Stefan Polster +4 more
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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
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Suppression of common-mode voltage in a PWM rectifier/inverter system [PDF]
, 2001 This paper proposes a PWM rectifier/inverter system capable of suppressing not only supply harmonic currents but also electromagnetic interference (EMI).
Akagi, Hirofumi, Ogasawara, Satoshi
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Inversion-based control of electromechanical systems using causal graphical descriptions [PDF]
, 1993 Causal Ordering Graph and Energetic Macroscopic Representation are graphical descriptions to model electromechanical systems using integral causality. Inversion rules have been defined in order to deduce control structure step-bystep from these graphical
BARRE, Pierre-Jean +8 more
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Motor Bearing Damage Induced by Bearing Current: A Review
Machines, 2022 The occurrence of the motor shaft voltage and bearing current caused by the inverter will aggravate bearing damage and lead to the premature failure of bearings.
Jiaojiao Ma +4 more
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Online Evaluation of Turbo-Generator Shaft Fatigue Damage Caused by Subsynchronous Oscillation
IEEE Access, 2020 Subsynchronous oscillation (SSO) fault can cause torsional vibration and fatigue damage of the shafting system, thereby endanger the safe operation of the turbo-generator set.
Dongchao Chen, Yuhao Zhang, Yujiong Gu
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Electrical bearing failures in electric vehicles
Friction, 2020 In modern electric equipment, especially electric vehicles, inverter control systems can lead to complex shaft voltages and bearing currents. Within an electric motor, many parts have electrical failure problems, and among which bearings are the most ...
Feng He, Guoxin Xie, Jianbin Luo
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