Results 41 to 50 of about 2,113,682 (278)

Characteristic Analysis and Fault-Tolerant Control of Circulating Current for Modular Multilevel Converters under Sub-Module Faults

Energies, 2017
A modular multilevel converter (MMC) is considered to be a promising topology for medium- or high-power applications. However, a significantly increased amount of sub-modules (SMs) in each arm also increase the risk of failures.
Wen Wu, Xuezhi Wu, Jingyuan Yin, Long Jing, Shuai Wang, Jinke Li   +5 more
doaj   +1 more source

An Improved Unscented Particle Filter Method for Remaining Useful Life Prognostic of Lithium-ion Batteries With Li(NiMnCo)O₂ Cathode With Capacity Diving

IEEE Access, 2020
An improved method for the remaining useful life (RUL) prognostic of Lithium-ion batteries with Li(NiMnCo)O2 cathode using improved unscented particle filter (UPF) is proposed with respect to capacity diving in later capacity degradation curve.
Xinwei Cong, Caiping Zhang, Jiuchun Jiang, Weige Zhang, Yan Jiang, Xinyu Jia   +5 more
doaj   +1 more source

Model Construction and Dominant Mechanism Analysis of Li-Ion Batteries under Periodic Excitation

Space: Science & Technology
This study establishes for the first time a P2D-coupled non-ideal double-layer capacitor model (P2D-CNIC), which can be used for mechanism analysis under high-frequency periodic signal excitation.
Zhihao Wang, Xingzhen Zhou, Bingxiang Sun, Weige Zhang, Xiaojia Su, Jinkai Shi, Qinhe Huang   +6 more
doaj   +1 more source

Capacity Decay Mechanism of the LCO + NMC532/Graphite Cells Combined with Post-Mortem Technique

Energies, 2017
Lithium ion batteries are widely used in portable electronics and transportations due to their high energy and high power with low cost. However, they suffer from capacity degradation during long cycling, thus making it urgent to study their decay ...
Linjing Zhang, Jiuchun Jiang, Weige Zhang   +2 more
doaj   +1 more source

An Adaptable Capacity Estimation Method for Lithium-Ion Batteries Based on a Constructed Open Circuit Voltage Curve

Batteries
The inevitable decline in battery performance presents a major barrier to its widespread industrial application. Adaptive and accurate estimation of battery capacity is paramount for battery operation, maintenance, and residual value evaluation.
Linjing Zhang, Xiaoqian Su, Caiping Zhang, Yubin Wang, Yao Wang, Tao Zhu, Xinyuan Fan   +6 more
doaj   +1 more source

Active local distribution network management for embedded generation [PDF]

, 2005
Traditionally, distribution networks have been operated as passive networks with uni-directional power flows. With the connection of increasing amounts of distributed generation, these networks are becoming active with power flowing in two directions ...
White, Sara
core  

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

An Improved Three-Phase Voltage Source Converter With High-Performance Operation Under Unbalanced Conditions

IEEE Access, 2018
The unbalance of the three-phase grid-voltages/loads can cause double-frequency power ripples in the voltage source converter (VSC) system. Such power ripples can further lead to current and/or voltage ripples on the dc link, which may create instability
Fen Tang, Jiayu Zhou, Zhen Xin, Songwei Huang, Poh Chiang Loh   +4 more
doaj   +1 more source

The cost of active network management schemes at distribution level [PDF]

, 2013
The growth of wind generation in distribution networks is leading to the development of Active Network Management (ANM) strategies. ANM systems aim to increase the capacity of renewable and distributed generation (DG) that can connect to the network.
Ault, Graham, Kane, Laura
core  

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source