Results 1 to 10 of about 291 (65)
Impact of stator interturn short circuit fault on shaft voltage in a synchronous generator
IET Electric Power Applications, 2023 Shaft voltage often exists in synchronous generators due to the assembly error or various faults after the long‐term performance. The article investigates the shaft voltage characteristic under the stator interturn short circuit (SISC) condition ...
Yu‐Ling He +6 more
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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 +2 more
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Reduction of the Induced Voltage in the Synchronous Generator Shaft Using Active AC / DC Converter
IEEE Access, 2020 Today, synchronous generators are broadly employed in the industry. The thyristor rectifier in the static excitation system of synchronous generators is responsible for supplying the DC voltage of the excitation winding.
Mohamad Rostami Engasi +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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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
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Shaft Voltage Reduction Method Using Carrier Wave Phase Shift in IPMSM
Energies, 2021 Common-Mode Voltage (CMV) induces shaft voltage and bearing current due to the electrical interaction with the parasitic capacitance of the motor. CMV, shaft voltage, and bearing current are considered the major causes of bearing fault.
Jun-Hyuk Im +3 more
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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
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Shaft Voltage Elimination Method to Reduce Bearing Faults in Dual Three-Phase Motor
IEEE Access, 2022 This paper proposes a method of eliminating common-mode voltage (CMV) and shaft voltage in dual three-phase motors using the carrier phase shift of space vector pulse width modulation (SVPWM).
Jun-Hyuk Im +3 more
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Electrostatic discharge impacts on the main shaft bearings of wind turbines [PDF]
Wind Energy Science, 2023 This paper studies the electrostatic discharge effect in wind turbines, a possible trigger source of the main bearing current. A lab setup with a charge generator and downsized wind turbine was built to verify the impact of electrostatic discharge on the
J. Zhao, X. Xu, O. Carlson
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