Results 241 to 250 of about 1,002,747 (273)

A Review of Shaft Voltages and Bearing Currents in EV and HEV Motors

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
In most mechanical and electrical systems, reliability is paramount. Consumers, users and operators trust that their product will perform properly over its expected lifetime. Electric Vehicles (EVs) and Hybrid-Electric Vehicles (HEVs) are no exception to this statement.
Trevor Hadden, James Weisheng Jiang, Berker Bilgin, Yinye Yang, Anand Sathyan, Hossein Dadkhah, Ali Emadi   +6 more
openaire   +2 more sources

A complete excitation-shaft-bearing model to overcome the shaft induced voltage and bearing current

2011 2nd Power Electronics, Drive Systems and Technologies Conference, 2011
This paper proposes a complete distributed model for investigating the induced shaft voltage and bearing current in turbo generators due to the interaction with the static excitation systems. This undesirable voltage affects the insulations gradually, lowering the life expectancy of the whole system.
Reza Kazemi Golkhandan, Mohammad Tavakoli Bina, Masoud Aliakbar Golkar, Mohsen Jokar   +3 more
openaire   +1 more source

Mitigation method of the shaft voltage according to parasitic capacitance of the PMSM

2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016
In this study, we propose the mitigation method of a shaft voltage according to change in parasitic capacitances of a permanent magnet synchronous motor (PMSM). First, we designed the equivalent circuit taking into account all parasitic capacitances.
Jun-kyu Park, Thusitha Randima Wellawatta, Sung-Jin Choi, Jin Hur   +3 more
openaire   +1 more source

Investigation on the shaft voltage generation of large synchronous turboalternators

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2020
Purpose This paper aims to go deeper on the analysis of the shaft voltage of large turbogenerators. The main interest of this study is the investigation process developed. Design/methodology/approach The analysis of the shaft voltage because of several defects is based on a two-dimensional (2D) finite element modeling.
Kevin Darques, Abdelmounaïm Tounzi, Yvonnick Le-menach, Karim Beddek   +3 more
openaire   +1 more source

An influence of voltage sag on nonutility generator shaft torque

2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002
An influence of the voltage sag on the shaft torque of the nonutility generator connecting to the utility system is investigated. During the oscillation of the generator electromagnetic torque, the mechanical shaft torque also oscillates according to the mechanical oscillation modes. In this situation, the shaft might be damaged.
T. Funabashi, H. Otoguro, T. Tanabe, G. Fujita, K. Koyanagi, R. Yokoyama   +5 more
openaire   +1 more source

PROTECTION RELAY FOR SHAFT CURRENT AND VOLTAGE

2015
Electric power system is a backbone of contemporary technical civilization and today’s economy. Functioning is not possible without stable, uninterruptable supply of electric energy that is needed both in industry and in most areas of our private lives.
Elez, Ante, Poljak, Ivan, Polak, Josip, Študir, Josip, Dujmović, M.   +4 more
openaire   +2 more sources

Shaft current and voltage protection relay

2014
The paper deals with the specific protection relay for all types of generators. The instrument, called Shaft Current and Voltage Protection Relay (SCVP) was developed at KONCAR – Electric Engineering Institute Inc. This instrument is a part of Institute's product line used for monitoring and diagnosis of rotating electrical machines. The most important
Elez, A., Dujmović, Mario, Polak, Josip, Študir, Josip, Poljak, Ivan   +4 more
openaire   +2 more sources

Voltages in the Shaft of the Induction Motor in 3D FEM Formulation

2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2007
A 3D model reflecting entire internal structure of the asynchronous machine using finite elements method, has been presented here. Nodal finite elements have been used to approximate scalar potential and edge finite elements to approximate vector magnetic potential.
Leslaw Golebiowski, Marek Golebiowski, Damian Mazur   +2 more
openaire   +1 more source

Calculation of shaft voltages caused by magnetic unbalances

[no abstract available]
openaire   +1 more source

Analysis of Common-mode Voltage and Shaft Voltage of IPMSM Accoring to Inverter Parameters

The transactions of The Korean Institute of Electrical Engineers, 2022
Yeol-Kyeong Lee, Jun-Hyuk Im, Jin Hur
openaire   +1 more source