Results 31 to 40 of about 19,374 (297)

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, Mehmet Güleç, Peter Sergeant   +2 more
doaj   +1 more source

Reduction of non-circulating bearing currents by electrical machine design [PDF]

, 2023
Electrical machines and drive systems play a crucial role in industrial processes and everyday life. Electrical drive systems that are capable of operating in the variable speed mode allow applying electric motors for the widest range of tasks. Nowadays,
Vostrov, Konstantin
core  

Design and Validation of Segmented CFRP Lamella-Based Composite End Shield for Bearing Current Mitigation

Machines
This study addresses the premature failure of electric motor bearings caused by inverter-induced parasitic currents. We propose a novel segmented end shield design utilizing 24 carbon fiber-reinforced polymer (CFRP) lamellae to provide both structural ...
Jiří Sika, Michal Křížek, Tomáš Kavalír, Bohumil Skala   +3 more
doaj   +1 more source

Study on Electromagnetic–Dynamic Coupled Modeling Method—Detection by Stator Current of the Induction Motors with Bearing Faults

Machines, 2022
Detecting motor bearing faults by stator currents is of great importance as it improves the adaptability of measurement means to different environments and reduces the number of sensors.
Liangyuan Huang, Niaoqing Hu, Yi Yang, Ling Chen, Jihong Wen, Guoji Shen   +5 more
doaj   +1 more source

Suppression of common-mode voltage in a PWM rectifier/inverter system

, 2001
This paper proposes a PWM rectifier/inverter system capable of suppressing not only supply harmonic currents but also electromagnetic interference (EMI).
S. Ogasawara, H. Akagi, Akagi, Hirofumi, Ogasawara, Satoshi   +3 more
core   +1 more source

Mitigating noncirculating bearing currents by a correct stator magnetic circuit and winding design [PDF]

, 2020
Different mechanisms by which bearing currents flow inside the electrical machine are well studied. In contrast, investigation and development of different techniques to mitigate these currents remain a field for improvement, and the final common ...
Pyrhönen, Juha, Ahola, Jero, Vostrov, Konstantin, Niemelä, Markku, Lindh, Pia   +4 more
core   +1 more source

Hospitalization Through Families’ Eyes: Comparing Inpatient Care Quality for Children With Sickle Cell Disease and Cystic Fibrosis in Canada

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker, Kyle Kemp, Perri Tutelman, Sharon H. J. Hou, Paul Fairie, Maria Santana, Gregory M. T. Guilcher, Taryn Fay‐McClymont, Glenda Bendiak, Wendy Pelletier, Nicola Wright, Fiona Schulte   +11 more
wiley   +1 more source

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, Yeol-Kyeong Lee, Jun-Kyu Park, Jin Hur   +3 more
doaj   +1 more source

Venous Thromboembolism in Pediatric Bone Sarcoma Patients: A 10‐Year, Single‐Institution Experience Encompassing the COVID‐19 Pandemic

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa, Shou Xu, Mark Zobeck, Sarah E. Sartain, Nino Rainusso, Lisa Wang, Nicole Montgomery, Paige Wheaton, Sarah Whittle   +8 more
wiley   +1 more source

Non-destructive evaluation of cement-based materials from pressure-stimulated electrical emission - Preliminary results [PDF]

, 2011
This is the post-print version of the final paper published in Construction and Building Materials. The published article is available from the link below.
Brown, CJ, Anastasiadis, C, Kyriazopoulos, A, Triantis, D, C. Anastasiadis, C.J. Brown, A. Kyriazopoulos, D. Triantis   +7 more
core   +1 more source