Results 111 to 120 of about 12,255 (285)

Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags

Iranian Journal of Electrical and Electronic Engineering, 2014
This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM).
H. Fallah khoshkar, A. Doroudi, M. Mohebbi   +2 more
doaj  

Study of Shaft Voltage on Short Circuit Alternator with Static Frequency Converter

, 2013
Electric machines are driven nowadays by static system popularly known as soft starter. This paper describes a thyristor based static frequency converter (or SFC) to run a large synchronous machine installed at a short circuit test laboratory. Normally a synchronous machine requires prime mover or some other driving mechanism to run. This machine doesn'
Datta, Arun Kumar, Dubey, Manisha, Jain, Shailendra   +2 more
openaire   +2 more sources

Critérios de projeto e construção de motores de indução trifásicos de alta rotação [PDF]

, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Este trabalho detalha as diretrizes de projetos para máquinas de indução de alta rotação.
Postól Sobrinho, Alexandre
core  

Targeting Endogenous Lipophagy: A Novel Strategy to Enhance MSC Osteogenesis and Mineralization for Senile Osteoporosis Therapy

Advanced Science, EarlyView.
Schematic representation of the role of lipophagy in bone mesenchymal stem cells(MSCs). In healthy MSCs, functional lipophagy efficiently degrades lipid droplets to support oxidative phosphorylation and cellular energy production, thereby facilitating osteogenic differentiation and matrix mineralization.
Chaoqiang Chen, Zhidong Liu, Yanhang Sun, Xiaojun Xu, Zhexiao Lan, Junhao Zhao, Peitao Xu, Guiwen Ye, Jinteng Li   +8 more
wiley   +1 more source

Simulation of Static Frequency Converter for Synchronous Machine Operation and Investigation of Shaft Voltage

, 2013
This study is carried out to understand the effects of Static frequency converter (SFC) on large machine. SFC has a feature of four quadrant operations. By virtue of this it can be implemented to run a synchronous machine either as a motor or alternator.
Arun Kumar Datta, N. R. Mondal, Manisha Dubey, Shailendra Jain, M. A. Ansari, B. V. Raghavaiah   +5 more
core   +1 more source

Self‐Powered Bearing Sensing and Real‐Time Fault Diagnosis Enabled by Non‐Invasive Triboelectric Sensors and Edge AI Acceleration

Advanced Science, EarlyView.
This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu, Zhongheng Liu, Xinming Li, Jinrui Zhang, Meng Li, Yiming Guo, Lihua Han, Yanxue Wang   +7 more
wiley   +1 more source

Organoid Brain‐Machine‐Interface Devices for Central Nervous System Repair

Advanced Science, EarlyView.
We envision organoid brain‐machine‐interface (Organoid‐BMI) devices as new biohybrid bidirectional communication pathways to connect the human CNS and the external world for personalized CNS repair and regeneration. ABSTRACT Central nervous system (CNS) repair and regeneration suffer from tremendous clinical challenges due to current limitations in ...
Yantao Xing, Yang Yang, Zichen Hong, Chunhui Tian, Huiyu Chu, Susanne Clara Prokop, Hongwei Cai, Mingxia Gu, Jason Tchieu, Ken Mackie, Feng Guo   +10 more
wiley   +1 more source

Common-mode Voltage Reduction in a Motor Drive System with a Power Factor Correction

, 2012
Common-mode voltage generated by a power converter in combination with parasitic capacitive couplings is a potential source of shaft voltage in an AC motor drive system.
Ghosh, A., Adabi Firouzjaee, Jafar, Abbasalizadeh Boora, Arash, Adabi, J., Zare, F., Nami, A., Nami, Alireza, Ghosh, Arindam, Zare, Firuz, Blaabjerg, Frede, Blaabjerg, Frede; id_orcid, Boora, A.A.   +11 more
core   +1 more source

Physics‐Constrained Constitutive Learning of Rate‐Limiting Timescales for Efficient Hydrogen‐Based Direct Reduction for Green Steel Making

Advanced Science, EarlyView.
A conversion‐resolved constitutive framework is developed for the hydrogen‐based direct reduction of iron oxide pellets. Effective reaction and transport timescales are inferred directly from measured trajectories and mapped against operating conditions, pellet architecture, and composition. The analysis reveals how late‐stage transport control emerges
Anurag Bajpai, Barak Ratzker, Pasquale Cavaliere, Dierk Raabe   +3 more
wiley   +1 more source

Comprehensive Review of Bearing Currents in Electrical Machines: Mechanisms, Impacts, and Mitigation Techniques

Energies
The present paper deals with a review on bearing currents in electrical machines, with major emphasis on mechanisms, impacts, and mitigation strategies.
Tianyi Pei, Hengliang Zhang, Wei Hua, Fengyu Zhang   +3 more
doaj   +1 more source