Results 11 to 20 of about 1,644,975 (282)

Influence of the Shielding Winding on the Bearing Voltage in a Permanent Magnet Synchronous Machine

Energies, 2022
This article presents selected methods of limiting the bearing voltages of synchronous machines with permanent magnets supplied from power electronic converters.
Sebastian Berhausen, Tomasz Jarek, Petr Orság   +2 more
doaj   +3 more sources

Bearing current and shaft voltage measurement in electrical motors

, 2017
Due to the fast-rising voltage pulses of pulse width modulated drives, the generated shaft voltage of electrical motors causes electrical discharge currents in bearings. These discharges can cause bearing failure leading to costly maintenance and unexpected production stops.
Kolic, Edo
core   +3 more sources

Bearing Voltage Prediction-Based Selective NLM Correction for EDM Suppression in Marine MMC Propulsion Drives

Journal of Marine Science and Engineering
Bearing damage caused by electric discharge machining (EDM) is a concern in electric ship propulsion drives, particularly during low-speed operations such as maneuvering and slow steaming.
Sungwoo Song, Heemoon Kim, Jongsu Kim, Seongwan Kim, Hyeonmin Jeon   +4 more
doaj   +2 more sources

Analysis of Traction Motor Bearing Voltage and Bearing Current Considering Whole-train Grounding and Suppression Measures

Chengshi guidao jiaotong yanjiu
Objective Most urban rail transit trains use PWM (pulse width modulation) variable frequency drive system, which often leads to bearing corrosion problems due to the excessive bearing voltage and bearing current during operation.
CHEN Zhi, ZHAO Wenjuan, YANG Xiangyan, CHEN Zhiwen, YANG Shaobing, SONG Kejian   +5 more
doaj   +2 more sources

Performance studies of oil lubricated helical groove journal bearing [PDF]

, 1992
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The provision of helical grooves on the surface of a plain journal bearing can improve the stability of a rotor-bearing system.
Khan, Muhammad Zubair
core   +7 more sources

Novel Bearing Current Suppression Approach in Doubly-Fed Induction Generators

IEEE Access, 2019
Doubly-fed induction generators (DFIGs) are widely used in the wind power generation systems. However, due to the use of the power electronic devices, such as insulated gate bipolar transistor (IGBT), it is inevitable to generate a non-zero common mode ...
Ruifang Liu, Erle Yang, Jiayao Chen, Shuangxia Niu   +3 more
doaj   +1 more source

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, Yujian Xue, Qingkai Han, Xuejun Li, Changxin Yu   +4 more
doaj   +1 more source

Common mode voltage impact on wind turbine main shaft bearing

, 2021
Main shaft bearing is a critical component in the wind turbine rotating system. But the bearing voltage, which is generated by the potential differences between the bearing and the main shaft, often causes the downtime of the main shaft bearing.
Carlson, Ola, Zhao, Jian, Xu, Xiangdong
core  

High-frequency Negative Effect Analysis and Countermeasures of Traction Inverter Based on all SiC MOSFET for Rail Transit

机车电传动, 2020
After the adoption of SiC device in traction converter for rail transit, the design of traction system will be negatively affected by the high switching speed and high switching frequency of power switch devices.
Yongjian ZHI, Deyong YANG, Bingquan ZHU, Keliang YUAN, Zifan GAO, Pengfei LI   +5 more
doaj  

Research on Analysis and Suppression Methods of the Bearing Current for Electric Vehicle Motor Driven by SiC Inverter

Energies
The silicon carbide (SiC) inverter brings great advantages to the motor drive systems of new energy vehicles; however, severe challenges to the bearings also happen.
Mingliang Yang, Yuan Cheng, Bochao Du, Yukuan Li, Sibo Wang, Shumei Cui   +5 more
doaj   +1 more source